13.060.50 (Examination of water for chemical subst 标准查询与下载

ASTM D1385-01 水中肼含量的标准试验方法

1.1 This test method coverssup2 the colorimetric determination of hydrazine in boiler feed waters, condensates, natural, and well waters that have been treated with hydrazine (N2H 4 ). This test method is usable in the range from 5.0 to 200 181g/L (ppb) hydrazine. The range is for photometric measurements made at 458 nm in 50 mm cell. Higher concentrations of hydrazine can also be determined by taking a more diluted sample. 1.2 It is the users' responsibility to ensure the validity of this test method for untested types of waters. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific precautionary statements, see 5.3, Note 1, and Footnote 8.

Standard Test Method for Hydrazine in Water

ASTM D1783-01 水中苯酚类化合物的测试方法

Phenolic compounds are sometimes found in surface waters from natural and industrial sources. Their presence in streams and other waterways frequently will cause off flavor in fish tissue and other aquatic food. Chlorination of waters containing phenols may produce chlorophenols that are odoriferous and objectionable tasting.1.1 These test methods cover the preparation of the sample and the determination of the concentration of phenolic compounds in water. They are based on the color reaction of phenol (C6H 5OH) with 4-aminoantipyrine and any color produced by the reaction of other phenolic compounds is reported as phenol. The concentration of phenol measured represents the minimum concentration of phenolic compounds present in the sample.1.2 Phenolic compounds with a substituent in the para position may not quantitatively produce color with 4-aminoantipyrine. However, para substituents of phenol such as carboxyl, halogen, hydroxyl, methoxyl, or sulfonic acid groups do produce color with 4-aminoantipyrine.1.3 These test methods address specific applications as follows: RangeSectionsTest Method A-Chloroform Extraction 0 to 100 181g/L11 to 17Test Method B-Direct Photometric>0.1 mg/L 18 to 24(100 181g/L)1.4 It is the users' responsibility to assure the validity of the standard test method for use in their particular matrix of interest.1.5 This standard does not purport to address all the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements see Note 1 and Note 3.

Standard Test Methods for Phenolic Compounds in Water

ASTM D1291-01 氯的需求量和/或水的需求量评估的标准实施规程

1.1 This practice provides a means of estimating the quantity of chlorine required to be added to a unit volume of water to accomplish a predetermined treatment objective or to completely react with all chlorine reactable substances in the water, or both. 1.2 Temperature, pH, and initial chlorine dosage are all variables in estimating the optimum chlorination practice. The effects of these variables can be evaluated using this practice. 1.3 Chlorine residual is determined using Test Method D1253. 1.4 This practice is applicable to all types of water in which the stated treatment objective can be evaluated or residual chlorine can be measured, or both. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For a specific hazard statement, see Note 1.

Standard Practice for Estimation of Chlorine Requirement or Demand of Water, or Both

ASTM D6508-00 用毛细管离子电泳和铬酸盐电解液法测定含水物质中溶解的无机阴离子的标准试验方法

1.1 This test method cover the determination of the inorganic anions fluoride, bromide, chloride, nitrite, nitrate, ortho-phosphate, and sulfate in drinking water, wastewater, and other aqueous matrices using capillary ion electrophoresis (CIE) with indirect UV detection. See .1.2 The test method uses a chromate-based electrolyte and indirect UV detection at 254 nm. It is applicable for the determination or inorganic anions in the range of 0.1 to 50 mg/L except for fluoride whose range is 0.1 to 25 mg/L.1.3 It is the responsibility of the user to ensure the validity of this test method for other anion concentrations and untested aqueous matrices.Note 1The highest accepted anion concentration submitted for precision and bias extend the anion concentration range for the following anions: Chloride to 93 mg/L, Sulfate to 90 mg/L, Nitrate to 72 mg/L, and ortho-phosphate to 58 mg/L.This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see Section .

Standard Test Method for Determination of Dissolved Inorganic Anions in Aqueous Matrices Using Capillary Ion Electrophoresis and Chromate Electrolyte

ASTM D4374-00 水中氰化物测定的标准试验方法.总氰化物、酸分解氰化物和硫氰化物自动测定法

1.1 These test methods cover the determination of different species of cyanides and thiocyanate in water and waste water, namely dissociable cyanide, total cyanide, and thiocyanate (1) 1.1.1 Total Cyanide--This test method determines all the dissociable cyanides and the strong metal-cyano-complexes, such as ferrocyanide [Fe(CN)6]4-, ferricyanide [Fe(CN)6]3-, hexacyanocolbaltate [Co(CN)6]3-, and those of gold and platinum. 1.1.2 Dissociable Cyanide --This test method basically determines free cyanides, as CN- and HCN, and weak metal-cyano-complexes such as [Cd(CN)4]2- and [Mn(CN)6]3-. Iron complexes are not included. 1.1.3 Cyanide complexes, strong complexes like those of iron, cobalt, etc., can be determined by difference, that is, cyanide complexes = total cyanides - dissociable cyanides. 1.1.4 Thiocyanate --This test method determines the thiocyanate as the difference between another measurement that includes total cyanide plus thiocyanate and the value of total cyanide, that is, thiocyanate = total cyanide plus thiocyanate - total cyanide. 1.2 Cyanates and cyanogen halides are not detected. Cyanogen chloride hydrolyzes to cyanate at the pH of sample preservation ([>=]12). 1.3 Most of the organo-cyano-complexes are not measured, with the exception of the weak cyanohydrins. 1.4 These test methods apply to different types of water, waste water (raw sewage, sludge, and effluent), sludge, some industrial waste, and sediments. Sample matrixes should be evaluated by the user. The reported precision and bias (see Section 16) may not apply to all samples. 1.5 The values stated in SI units are to be regarded as the standard. 1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific precautionary statements, see Section 9.

Standard Test Methods for Cyanides in Water--Automated Methods for Total Cyanide, Acid dissociable Cyanide, and Thiocyanate

ASTM D6581-00 化学悬浮离子色谱法测定饮用水中溴酸盐、亚溴酸盐、氯酸盐和亚氯酸盐的标准试验方法

1.1 This test method covers the determination of the oxyhalides - chlorite, bromate, and chlorate, and bromide, in raw water, finished drinking water and bottled (non-carbonated) water by chemically suppressed ion chromatography. The ranges tested using this method for each analyte were as follows:Chlorite20 to 500 g/LBromate5 to 30 g/LBromide20 to 200 g/LChlorate20 to 500 g/LThe upper limits may be extended by appropriate sample dilution or by the use of a smaller injection volume. Other ions of interest, such as fluoride, chloride, nitrite, nitrate, phosphate, and sulfate may also be determined using this method. However, analysis of these ions is not the object of this test method.1.2 It is the user's responsibility to ensure the validity of these test methods for waters of untested matrices.1.3 This test method is technically equivalent with Part B of U.S. EPA Method 300.1, titled "The Determination of Inorganic Anions in Drinking Water by Ion Chromatography".1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Test Method for Bromate, Bromide, Chlorate, and Chlorite in Drinking Water by Chemically Suppressed Ion Chromatography

ASTM D1252-00 水的化学氧需要量(重铬酸盐氧需要量)的标准试验方法

1.1 These test methods cover the determination of the quantity of oxygen that certain impurities in water will consume, based on the reduction of a dichromate solution under specified conditions. The following test methods are included: Test Method A--Macro COD by Reflux Digestion and TitrationTest Method B--Micro COD by Sealed Digestion and Spectrometry1.2 These test methods are limited by the reagents employed to a maximum chemical oxygen demand (COD) of 800 mg/L. Samples with higher COD concentrations may be processed by appropriate dilution of the sample. Modified procedures in each test method (Section 15 for Test Method A and Section 24 for Test Method B) may be used for waters of low COD content ( 50 mg/L).1.3 As a general rule, COD results are not accurate if the sample contains more than 1000 mg/L Cl-. Consequently, these test methods should not be applied to samples such as seawaters and brines.1.4 This test method was used successfully on a standard made up in reagent water. It is the user's responsibility to ensure the validity of these test methods for waters of untested matrices.1.5This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see Section 8 and Note 3 and Note 9.

Standard Test Methods for Chemical Oxygen Demand (Dichromate Oxygen Demand) of Water

ASTM D6508-00(2005)e1 用毛细管离子电泳和铬酸盐电解液法测定含水物质中溶解的无机阴离子的标准试验方法

Capillary ion electrophoresis provides a simultaneous separation and determination of several inorganic anions using nanolitres of sample in a single injection. All anions present in the sample matrix will be visualized yielding an anionic profile of the sample. Analysis time is less than 5 minutes with sufficient sensitivity for drinking water and wastewater applications. Time between samplings is less than seven minutes allowing for high sample throughput. Minimal sample preparation is necessary for drinking water and wastewater matrices. Typically, only a dilution with water is needed. This test method is intended as an alternative to other multi-analyte methods and various wet chemistries for the determination of inorganic anions in water and wastewater. Compared to other multi-analyte methods the major benefits of CIE are speed of analysis, simplicity, and reduced reagent consumption and operating costs.1.1 This test method cover the determination of the inorganic anions fluoride, bromide, chloride, nitrite, nitrate, ortho-phosphate, and sulfate in drinking water, wastewater, and other aqueous matrices using capillary ion electrophoresis (CIE) with indirect UV detection. See .1.2 The test method uses a chromate-based electrolyte and indirect UV detection at 254 nm. It is applicable for the determination or inorganic anions in the range of 0.1 to 50 mg/L except for fluoride whose range is 0.1 to 25 mg/L.1.3 It is the responsibility of the user to ensure the validity of this test method for other anion concentrations and untested aqueous matrices.Note 1The highest accepted anion concentration submitted for precision and bias extend the anion concentration range for the following anions: Chloride to 93 mg/L, Sulfate to 90 mg/L, Nitrate to 72 mg/L, and ortho-phosphate to 58 mg/L.This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see Section .

Standard Test Method for Determination of Dissolved Inorganic Anions in Aqueous Matrices Using Capillary Ion Electrophoresis and Chromate Electrolyte

ASTM D5256-00 溶于水形成的沉淀物的动态溶剂体系相关功效的标准试验方法

1.1 This test method covers the determination of the relative efficacy of dynamic solvent systems for dissolving water-formed deposits that have been either removed from the underlying material or synthetically prepared, or deposits attached to the underlying material. 1.2 The nature of this test method is such that statements of precision and bias as determined by round robin tests could mislead users of this test method (see Sections 11 and 12). Therefore, no precision and bias statements are made. 1.3 The values stated in SI units are to be regarded as the standard. 1.4 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Test Method for Relative Efficacy of Dynamic Solvent Systems for Dissolving Water-Formed Deposits

ASTM D6520-00 挥发和半挥发性有机复合物分析用水及其液面上的固相微萃取的标准实施规程

1.1 This practice covers procedures for the extraction of volatile and semi-volatile organic compounds from water and its headspace using solid-phase microextraction (SPME).1.2 The compounds of interest must have a greater affinity for the SPME-absorbent polymer or adsorbent or combinations of these than the water or headspace phase in which they reside.1.3 Not all of the analytes that can be determined by SPME are addressed in this practice. The applicability of the absorbent polymer, adsorbent, or combination thereof, to extract the compound(s) of interest must be demonstrated before use.1.4 This practice provides sample extracts suitable for quantitative or qualitative analysis by gas chromatography (GC) or gas chromatography-mass spectrometry (GC-MS).1.5 Where used, it is the responsibility of the user to validate the application of SPME to the analysis of interest.1.6 The values stated in SI units are to be regarded as the standard.This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see Section .

Standard Practice for the Solid Phase Micro Extraction (SPME) of Water and its Headspace for the Analysis of Volatile and Semi-Volatile Organic Compounds

ASTM D5811-00 测定水中锶-90的标准试验方法

This test method was developed to measure the concentration of 90Sr in non-process water samples. This test method may be used to determine the concentration of 90Sr in environmental samples. 1.1 This test method covers the determination of radioactive 90Sr in environmental water samples (for example, non-process and effluent waters) in the range of 0.037 Bq/L (1.0 pCi/L) or greater.1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.1.3 This test method has been used successfully with tap water. It is the user's responsibility to ensure the validity of this test method for samples larger than 1 L and for waters of untested matrices. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see Section 9.

Standard Test Method for Strontium-90 in Water

ASTM D6508-00(2005)e2 用毛细管离子电泳和铬酸盐电解液法测定含水物质中溶解的无机阴离子的标准试验方法

Capillary ion electrophoresis provides a simultaneous separation and determination of several inorganic anions using nanolitres of sample in a single injection. All anions present in the sample matrix will be visualized yielding an anionic profile of the sample. Analysis time is less than 5 minutes with sufficient sensitivity for drinking water and wastewater applications. Time between samplings is less than seven minutes allowing for high sample throughput. Minimal sample preparation is necessary for drinking water and wastewater matrices. Typically, only a dilution with water is needed. This test method is intended as an alternative to other multi-analyte methods and various wet chemistries for the determination of inorganic anions in water and wastewater. Compared to other multi-analyte methods the major benefits of CIE are speed of analysis, simplicity, and reduced reagent consumption and operating costs.1.1 This test method cover the determination of the inorganic anions fluoride, bromide, chloride, nitrite, nitrate, ortho-phosphate, and sulfate in drinking water, wastewater, and other aqueous matrices using capillary ion electrophoresis (CIE) with indirect UV detection. See Figs. 1-6. 1.2 The test method uses a chromate-based electrolyte and indirect UV detection at 254 nm. It is applicable for the determination or inorganic anions in the range of 0.1 to 50 mg/L except for fluoride whose range is 0.1 to 25 mg/L. 1.3 It is the responsibility of the user to ensure the validity of this test method for other anion concentrations and untested aqueous matrices. Note 18212;The highest accepted anion concentration submitted for precision and bias extend the anion concentration range for the following anions: Chloride to 93 mg/L, Sulfate to 90 mg/L, Nitrate to 72 mg/L, and ortho-phosphate to 58 mg/L. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see Section 9.

Standard Test Method for Determination of Dissolved Inorganic Anions in Aqueous Matrices Using Capillary Ion Electrophoresis and Chromate Electrolyte

ASTM D6581-00(2005) 化学悬浮离子色谱法测定饮用水中溴酸盐、亚溴酸盐、氯酸盐和亚氯酸盐的标准试验方法

The oxyhalides chlorite, chlorate, and bromate are inorganic disinfection by-products (DBPs) of considerable health risk concern worldwide. The occurrence of chlorite and chlorate is associated with the use of chlorine dioxide, as well as hypochlorite solutions used for drinking water disinfection. The occurrence of bromate is associated with the use of ozone for disinfection, wherein naturally occurring bromide is oxidized to bromate. Bromide is a naturally occurring precursor to the formation of bromate. 1.1 This test method covers the determination of the oxyhalides - chlorite, bromate, and chlorate, and bromide, in raw water, finished drinking water and bottled (non-carbonated) water by chemically suppressed ion chromatography. The ranges tested using this method for each analyte were as follows:Chlorite20 to 500 g/LBromate5 to 30 g/LBromide20 to 200 g/LChlorate20 to 500 g/LThe upper limits may be extended by appropriate sample dilution or by the use of a smaller injection volume. Other ions of interest, such as fluoride, chloride, nitrite, nitrate, phosphate, and sulfate may also be determined using this method. However, analysis of these ions is not the object of this test method.1.2 It is the user's responsibility to ensure the validity of these test methods for waters of untested matrices.1.3 This test method is technically equivalent with Part B of U.S. EPA Method 300.1, titled "The Determination of Inorganic Anions in Drinking Water by Ion Chromatography".1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Test Method for Bromate, Bromide, Chlorate, and Chlorite in Drinking Water by Chemically Suppressed Ion Chromatography

ASTM D4785-00a 水中低含量碘-131的标准试验方法

This test method was developed for measuring low levels of iodine-131 in water. The results of the test may be used to determine if the concentration of iodine-131 in the sample exceeds the regulatory statutes for drinking water. With a suitable counting technique, sample size, and counting time, a detection limit of less than 0.037 Bq/L (1 pCi/L) is attainable by gamma-ray spectroscopy.1.1 This test method covers the quantification of low levels of iodine-131 in water by means of chemical separation and counting with a high-resolution gamma ray detector. Iodine is chemically separated from a 4-L water sample using ion exchange and solvent extraction and is then precipitated as cuprous iodide for counting. 1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses are provided for information purposes only. 1.3 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see Note 2, Note 3, Note 8, and Section 9.

Standard Test Method for Low-Level Iodine-131 in Water

ASTM D4165-00 水中氯化氰含量的标准试验方法

1.1 This test method covers the determination of cyanogen chloride in water. Cyanogen chloride is normally present only at very low concentrations; it is a very labile and sparsely soluble gaseous compound. Water samples may contain cyanogen chloride after the chlorination of waste waters containing cyanide or thiocyanate compounds. 1.2 Cyanogen chloride is unstable. A quick test using a spot plate or comparator as soon as the sample is collected may be the best test, reducing the loss of cyanogen chloride during the time lapse between sampling and analysis. (See Fig. 1 for a typical decay curve for cyanogen chloride in a solution.) 1.3 This test method has been used successfully with reagent water. The analyst is responsible for determining whether the test method is applicable to the water matrix being tested. Reference is made to Test Method D of Test Methods D2036 which is based on similar chemical reactions and has been evaluated by collaborative testing in this matrix. 1.4 The lower limit of detectability is 0.005 mg CN /L. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific hazard statements are given in Notes 1 and 2 and Section 9.

Standard Test Method for Cyanogen Chloride in Water

ASTM D4130-99 微咸水、海水和盐水中硫酸盐离子的试验方法

1.1 This test method covers the turbidimetric determination of sulfate ion in brackish water, seawater, and brines. It has been used successfully with synthetic brine grade waters; however, it is the user's responsibility to ensure the validity of this test method to other matrices. 1.2 This test method is applicable to waters having an ionic strength greater than 0.65 mol/L and a sulfate ion concentration greater than 25 mg/L. A concentration less than 25 mg/L sulfate can be determined by using a standard addition method. 1.3 For brines having an ionic strength of less than 0.65 mol/L, refer to Test Methods D516. 1.4 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Test Method for Sulfate Ion in Brackish Water, Seawater, and Brines

ASTM D3867-99 水中亚硝酸盐,硝酸盐的标准试验方法

1.1 These test methods cover the determination of nitrite nitrogen, nitrate nitrogen; and combined nitrite-nitrate nitrogen in water and wastewater in the range from 0.05 to 1.0 mg/L nitrogen. Two test methods are given as follows: Test Method A-Automated Cadmium Reduction (Sections 9-16) and Test Method B-Manual Cadmium Reduction (Sections 17-24). 1.2 These test methods are applicable to surface, saline, waste, and ground waters. It is the user's responsibility to ensure the validity of these test methods for waters of untested matrices. 1.3 This standard may involve hazardous materials, operations, and equipment. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For a specific hazard statement, see 8.2.1.

Standard Test Methods for Nitrite-Nitrate in Water

ASTM D1293-99 水pH值的标准测试方法

1.1 These test methods cover the determination of pH by electrometric measurement using the glass electrode as the sensor. Two test methods are given as follows: SectionsTest Method A-Precise Laboratory Measurement 8 to 15Test Method B-Routine or Continuous Measurement 16 to 241.2 Test Method A covers the precise measurement of pH in water utilizing at least two of seven standard reference buffer solutions for instrument standardization.1.3 Test Method B covers the routine measurement of pH in water and is especially useful for continuous monitoring. Two buffers are used to standardize the instrument under controlled parameters, but the conditions are somewhat less restrictive than those in Test Method A.1.4 Both test methods are based on the pH scale established by NIST (formerly NBS) Standard Reference Materials.1.5 Neither test method is considered to be adequate for measurement of pH in water whose conductivity is less than about 5 S/cm. Refer to Test Methods D 5128 and D 5464.1.6 Precision and bias data were obtained using buffer solutions only. It is the user's responsibility to assure the validity of these test methods for untested types of water.This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.1.7 This test method covers the precise measurement of pH in water under strictly controlled laboratory conditions.1.8 This test method is used for the routine measurement of pH in the laboratory and the measurement of pH under various process conditions.

Standard Test Methods for pH of Water

ASTM D1293-99(2005) 水pH值的标准测试方法

The pH of water is a critical parameter affecting the solubility of trace minerals, the ability of the water to form scale or to cause metallic corrosion, and the suitability of the water to sustain living organisms. It is a defined scale, based on a system of buffer solutions2 with assigned values. In pure water at 25°C, pH 7.0 is the neutral point, but this varies with temperature and the ionic strength of the sample.6 Pure water in equilibrium with air has a pH of about 5.5, and most natural uncontaminated waters range between pH 6 and pH 9.1.1 These test methods cover the determination of pH by electrometric measurement using the glass electrode as the sensor. Two test methods are given as follows: SectionsTest Method A-Precise Laboratory Measurement 8 to 15Test Method B-Routine or Continuous Measurement 16 to 241.2 Test Method A covers the precise measurement of pH in water utilizing at least two of seven standard reference buffer solutions for instrument standardization.1.3 Test Method B covers the routine measurement of pH in water and is especially useful for continuous monitoring. Two buffers are used to standardize the instrument under controlled parameters, but the conditions are somewhat less restrictive than those in Test Method A.1.4 Both test methods are based on the pH scale established by NIST (formerly NBS) Standard Reference Materials.1.5 Neither test method is considered to be adequate for measurement of pH in water whose conductivity is less than about 5 S/cm. Refer to Test Methods D 5128 and D 5464.1.6 Precision and bias data were obtained using buffer solutions only. It is the user's responsibility to assure the validity of these test methods for untested types of water.This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.1.7 This test method covers the precise measurement of pH in water under strictly controlled laboratory conditions.1.8 This test method is used for the routine measurement of pH in the laboratory and the measurement of pH under various process conditions.

Standard Test Methods for pH of Water

ASTM D1179-99 水中氟化物离子的测试方法

1.1 These test methods cover the determination of fluoride ion in water. The following two test methods are given: Sections Test Method A (Distillation) 7 to 14 Test Method B (Ion Selective Electrode) 15 to 22 1.2 Test Method A covers the accurate measurement of total fluoride in water through isolation of the fluoride by distillation and subsequent measurement in the distillate by use of the ion selective electrode method. The procedure covers the range from 0.1 to 2.6 mg/L of fluoride. 1.3 Test Method B covers the accurate measurement of simple fluoride ion in water by means of an ion selective electrode. With this test method, distillation is eliminated because the electrode is not affected by the interferences common to colorimetric procedures. Concentrations of fluoride from 0.1 to 1000 mg/L may be measured. 1.4 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For a specific precautionary statement, see 12.1.2. 1.5 Former Test Method A, SPADNS Photometric Procedure, was discontinued. Refer to Appendix X1 for historical information.

Standard Test Methods for Fluoride Ion in Water