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

ASTM D6889-03(2011) 用固相微萃取法(SPME)快速筛选水中挥发性有机化合物的标准操作规程

This practice provides a general procedure for the solid-phase microextraction (SPME) of volatile organic compounds from the headspace of an aqueous matrix. Absorbent extraction is used as the initial step in the extraction of organic constituents for the purpose of screening and subsequently estimating the concentration of the volatile organic components found in water samples. This information may then be used to determine whether a sample may be analyzed directly by purge and trap or headspace or will require dilution prior to analysis. Typical detection limits that can be achieved using SPME techniques with gas chromatography (GC) with a flame ionization detector (FlD) range from milligrams per litre (mg/L) to micrograms per litre (μg/L). The detection limit, linear concentration range, and sensitivity of this test method for a specific organic compound will depend upon the aqueous matrix, the fiber phase, the sample temperature, sample volume, sample mixing, and the determinative technique employed. Solid phase microextraction has the advantage of speed, reproducibility, simplicity, no solvent, small sample size, and automation. Extraction devices vary from a manual SPME fiber holder to automated commercial devices specifically designed for SPME. A partial list of volatile organic compounds that can be screened by this practice is shown in Table 1.1.1 This practice covers a procedure for the screening of trace levels of volatile organic compounds in water samples by headspace solid phase microextraction (SPME) in combination with fast gas chromatography with flame ionization detection. 1.2 The results from this screening procedure are used to estimate analyte concentrations to prevent contamination of purge and trap or headspace analytical systems. 1.3 The compounds of interest must have a greater affinity for the SPME absorbent polymer or adsorbent than the sample matrix or headspace phase in which they reside. 1.4 Not all of the analytes which can be determined by SPME are addressed in this practice. The applicability of the absorbent polymer, adsorbent or combination to extract the compound(s) of interest must be demonstrated before use. 1.5 Where used it is the responsibility of the user to validate the application of SPME to the analytes of interest. 1.6 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.7 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 Practice for Fast Screening for Volatile Organic Compounds in Water Using Solid Phase Microextraction (SPME)

ASTM D4191-03 原子吸收分光光度法对水中钠含量的标准试验方法

Sodium salts are very soluble, and sodium leached from soil and rocks tends to remain in solution. Water with a high ratio of sodium to calcium is deleterious to soil structure. Sodium is not particularly significant in potable water except for those persons having an abnormal sodium metabolism, but water supplies in some areas contain sufficient sodium to be a factor in the planning of sodium-free diets. The use of sodium salts is common in industry; therefore, many industrial wastewaters contain significant quantities of sodium. For high-pressure boiler feed-water even trace amounts of sodium are of concern.1.1 This test method covers the determination of low amounts of sodium in waters having low solids content. The applicable range of this test method is from 0.20 to 3.0 mg/L when using the 589.6-nm resonance line. This range may be extended upward by dilution of an appropriate aliquot of sample or by use of the less-sensitive 330.2-nm resonance line (see Test Method D 3561). Many workers have found that this test method is reliable for sodium levels to 0.005 mg/L, but use of this test method at this low level is dependent on the configuration of the aspirator and nebulizer system available in the atomic absorption spectrophotometer as well as the experience and skill of the analyst. The precision and bias data presented are insufficient to justify use of this test method in the 0.005 to 0.20-mg/L range.1.2 This test method has been used successfully with spiked reagent water. It is the analyst's responsibility to assure the validity of the test method to other low dissolved solids matrices.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.

Standard Test Method for Sodium in Water by Atomic Absorption Spectrophotometry

ASTM D4130-03 微咸水、海水和盐水中硫酸盐离子的标准测试方法

The determination of sulfate and other dissolved constituents is important in identifying the source of brines produced during the drilling and production phases of crude oil or natural gas.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 D 516.1.4 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 Sulfate Ion in Brackish Water, Seawater, and Brines

ASTM D3352-03 微咸水、海水和盐水中锶离子含量的标准测试方法

1.1 This test method covers the determination of soluble strontium ion in brackish water, seawater, and brines by atomic absorption spectrophotometry.1.2 Samples containing from 5 to 2100 mg/L of strontium may be analyzed by this test method.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.

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

ASTM D511-03 水中钙镁离子的标准测试方法

Calcium and magnesium salts in water are the primary components of water hardness which can cause pipe or tube scaling.1.1 These test methods cover the determination of calcium and magnesium in water by complexometric titration and atomic absorption spectrometric procedures. Two test methods are included, as follows:SectionsTest Method A-Complexometric Titration7 to 14Test Method B-Atomic Absorption Spectrometric15 to 231.2 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 12.2.6 and 20.6.

Standard Test Methods for Calcium and Magnesium In Water

ASTM D3558-03 水中钴含量的标准测试方法

Most waters rarely contain more than trace concentrations of cobalt from natural sources. Although trace amounts of cobalt seem to be essential to the nutrition of some animals, large amounts have pronounced toxic effects on both plant and animal life.1.1 These test methods cover the determination of dissolved and total recoverable cobalt in water and wastewater by atomic absorption spectrophotometry. Three test methods are included as follows: Concentration RangeSectionsTest Method A8212;Atomic Absorption, Direct0.1 to 10 mg/L7 to 16Test Method B8212;Atomic Absorption, Chelation-Extraction10 to 1000 g/L17 to 26Test Method C8212;Atomic Absorption, Graphite Furnace5 to 100 g/L27 to 361.2 Test Method A has been used successfully with reagent water, potable water, river water, and wastewater. Test Method B has been used successfully with reagent water, potable water, river water, sea water and brine. Test Method C was successfully evaluated in reagent water, artificial seawater, river water, tap water, and a synthetic brine. It is the analyst's responsibility to ensure the validity of these test methods for other matrices.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 hazard statements, see 11.7.1, 21.10, and 23.10.

Standard Test Methods for Cobalt in Water

ASTM D3859-03 水中硒含量的标准测试方法

In most natural waters selenium concentrations seldom exceed 10 μg/L. However, the runoff from certain types of seleniferous soils at various times of the year can produce concentrations as high as several hundred micrograms per litre. Additionally, industrial contamination can be a significant source of selenium in rivers and streams. High concentrations of selenium in drinking water have been suspected of being toxic to animal life. Selenium is a priority pollutant and all public water agencies are required to monitor its concentration. These test methods determine the dominant species of selenium reportedly found in most natural and wastewaters, including selenities, selenates, and organo-selenium compounds.1.1 These test methods cover the determination of dissolved and total recoverable selenium in most waters and wastewaters. Both test methods utilize atomic absorption procedures, as follows:SectionsTest Method A-Gaseous Hydride AAS7 to 16Test Method B-Graphite Furnace AAS17 to 261.2 These test methods are applicable to both inorganic and organic forms of dissolved selenium. They are applicable also to particulate forms of the element, provided that they are solubilized in the appropriate acid digestion step. However, certain selenium-containing heavy metallic sediments may not undergo digestion.1.3 These test methods are most applicable within the following ranges:Test Method A1 to 20 956;g/LTest Method B2 to 100 956;g/L1.4 These ranges may be extended (with a corresponding loss in precision) by decreasing the sample size or diluting the original sample, but concentrations much greater than the upper limits are more conveniently determined by flame atomic absorption spectrometry.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 11.12 and 13.14.

Standard Test Methods for Selenium in Water

ASTM D1429-03 水和卤水比重的标准试验方法

Specific gravity is an important property of fluids being related to density and viscosity. Knowing the specific gravity will allow determination of a fluidrsquo;characteristics compared to a standard, usually water, at a specified temperature. This will allow the user to determine if the test fluid will be heavier or lighter than the standard fluid.1.1 These test methods cover the determination of the specific gravity of water and brine free of separable oil, as follows:SectionsTest Method A-Pycnometer7 to 11, 21Test Method B-Balance12 to 16, 21Test Method C-Erlenmeyer Flask17 to 21Test Method D-Hydrometer22 to 271.2 Test Methods A and B are applicable to clear waters or those containing only a moderate amount of particulate matter. Test Method B is preferred for samples of sea water or brines and is more sensitive than Test Method D which has the same general application. Test Method C is intended for samples of water containing mud or sludge.1.3 It is the user's responsibility to ensure the validity of these test methods for waters of untested matrices.1.4 The test method was tested at 22716;C over a range, shown in , of 1.0252 through 1.2299; all data were corrected to 15.6176;C (60176;F).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.

Standard Test Methods for Specific Gravity of Water and Brine

ASTM D3875-03 微咸水、海水和盐水中碱度的标准试验方法

Alkalinity as carbonate and bicarbonate of saline water is very important in chemical waterflooding or tertiary recovery processes for recovering petroleum. Alkaline waters offer better wetting to the formation rock and improve oil release. As an additional benefit, ions that provide alkalinity adsorb on rock surfaces occupying adsorption sites and decrease the loss of recovery chemical by adsorption. Determination of alkalinity in waters used in tertiary recovery processes is therefore very important. An alkalinity value is necessary in the calculation of carbonate scaling tendencies of saline waters. It is also necessary to determine the alkalinity if the ionic balance of a water analysis is to be used as a check of the reliability of the analysis.1.1 This test method covers the determination of alkalinity in brackish water, seawater, and brines.1.2 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 Alkalinity in Brackish Water, Seawater, and Brines

ASTM D2777-03 D-19水委员会应用方法的精确性及偏差测定的标准实施规范

1.1 This practice establishes uniform standards for estimating and expressing the precision and bias of applicable test methods for Committee D19 on Water.1.2 Except as specified in 1.3, 1.4, and 1.5, this practice requires the task group proposing a new test method to carry out a collaborative study from which statements for precision (overall and single-operator standard-deviation estimates) and bias can be developed. This practice provides general guidance to task groups in planning and conducting such determinations of precision and bias. 1.3 If a full-scale collaborative study is not technically feasible, due to the nature of the test method or instability of samples, the largest feasible scaled-down collaborative study shall be conducted to provide the best possible limited basis for estimating the overall and single-operator standard deviations.1.3.1 Examples of acceptable scaled-down studies are the local-area studies conducted by Subcommittee D19.24 on microbiological methods because of inherent sample instability. These studies involve six or more completely independent local-area analysts who can begin analysis of uniform samples at an agreed upon time.1.3.2 If uniform samples are not feasible under any circumstances, a statement of single-operator precision will meet the requirements of this practice. Whenever possible, this statement should be developed from data generated by independent multiple operators, each doing replicate analyses on independent samples (of a specific matrix type), which generally fall within specified concentration ranges (see 7.2.5.2( 3)).1.3.3 This practice is not applicable to methodology involving continuous sampling or continuous measurement, or both, of specific constituents and properties.1.3.4 This practice is also not applicable to open-channel flow measurements.1.4 A collaborative study that satisfied the requirements of the version of this practice in force when the study was conducted will continue to be considered an adequate basis for the precision-and-bias statement required in each test method. If the study does not satisfy the current minimum requirements for a collaborative study, a statement listing the study''s deficiencies and a reference to this paragraph shall be included in the precision-and-bias statement as the basis for an exemption from the current requirements.1.5 This paragraph relates to special exemptions not clearly acceptable under or . With the approval of Committee D19 on the recommendation of the Results Advisor and the Technical Operations Section of the Executive Subcommittee of Committee D19, a statement giving a compelling reason why compliance with all or specific points of this practice cannot be achieved will meet both ASTM requirements (1) and the related requirements of this practice. Precision-and-bias statements authorized by this paragraph shall include the date of approval by Committee D19.1.6 In principle, all test methods are covered by this practice.1.7 In Section 12 this practice shows exemplary precision-and-bias-statement formats for: (1) test methods yielding a numerical measure, (2) test methods yielding a non-numerical report of success or failure based on criteria specified in the procedure, and (3) test methods specifying that procedures in another ASTM test method are to be used with only insignificant modifications.1.8 All studies, even those exempt from some requirements under or , shall receive approval from the Results Advisor before being conducted (see Section 8) and after completion (see Section 13).1.9 This practice satisfies the QC requirements of Practice D 5847.1.10 It is the intent of this practice that task groups make every effort to retain all the data from their round-robin studies. Values should not be eliminated unless solid evidence exists for their exclusion. The Result......

Standard Practice for Determination of Precision and Bias of Applicable Methods of Committee D-19 on Water

ASTM D1068-03 水中铁的标准测试方法

1.1 These test methods cover the determination of iron in water. Procedures are given for determining total iron, dissolved iron, and ferrous iron. Undissolved iron may be calculated from the total iron and dissolved iron determinations. The test methods are given as follows:RangeSectionsTest Method A-Atomic Absorption, Direct0.1 to 5.0 mg/L7 to 15Test Method C-Atomic Absorption, Graphite Furnace5 to 100 956;g/L16 to 24Test Method D-Photometric Bathophenanthroline g/L40 to 1000 956;g/L25 to 361.2 It is the user's responsibility to ensure the validity of these test methods to waters of untested matrices.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. Specific hazards statements are given in Note 3, Note 5, and Note X1.1.1.4 Two former photometric test methods were discontinued. See Appendix X2 for historical information.

Standard Test Methods for Iron in Water

ASTM D3373-03 水中钒含量的标准测试方法

1.1 This test method covers the determination of dissolved and total recoverable vanadium in most waters and wastewater by graphite furnace atomic absorption spectrophotometry. 1.2 The optimum range of this test method is 10 to 200 956;g/L of vanadium based on a 20-956;L sample size. Concentrations higher than 200 956;g/L may be determined by proper dilution of sample. A detection level as low as 4 956;g/L of vanadium has been reported. 1.3 This test method has been used successfully with reagent water, lake water, tap water, river water, condensate from a medium Btu coal gasification process, and well water. It is the user's responsibility to ensure the validity of this test method for waters of untested matrices. 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 or regulatory limitations prior to use. 1.5 Former Test Method A (Catalytic) was discontinued. Refer to Appendix X1 for historical information.

Standard Test Method for Vanadium in Water

ASTM D1691-02(2007)e1 水中锌含量的标准试验方法

Zinc is an essential and beneficial element in body growth. Concentrations above 5 mg/L can cause a bitter astringent taste and opalescence in alkaline waters. The zinc concentration of U.S. drinking waters varies between 0.06 and 7.0 mg/L with a mean of 1.33 mg/L. Zinc most commonly enters the domestic water supply from deterioration of galvanized iron and dezincification of brass. Zinc in water also may result from industrial water pollution.3 1.1 These test methods cover the determination of zinc in water. Two test methods are given as follows:Test MethodConcentration RangeSectionsA-Atomic Absorption, Direct0.05 to 2 mg/LB-Atomic Absorption, Chelation-Extraction20 to 200 g/L1.2 Either dissolved or total recoverable zinc may be determined.1.3 These test methods have been used successfully with reagent grade water. See the specific test method for applicability to other matrices. It is the user's responsibility to assure the validity of these test methods in other matrices.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 6 and Note 5, Note 8, and Note 13. 1.4 Two former colorimetric test methods were discontinued. Refer to Appendix x1 for historical information.

Standard Test Methods for Zinc in Water

ASTM D4193-02 水中硫氰酸盐含量的标准试验方法

Many natural waters contain thiocyanate from organic decomposition products and waste water discharges. Some industrial wastes, such as those from the steel industry, petroleum refining, and coal gasification, may contain significant concentrations of thiocyanate. Thiocyanate per se is not recognized as a toxic chemical compound. However, when chlorinated, thiocyanate is converted to the highly toxic and volatile cyanogen chloride. 5.1.1 For information on the impact of cyanogen compounds, see Appendix X1 of Test Method D 2036.1.1 This test method covers the determination of dissolved thiocyanate in water, waste water, and saline water in the range from 0.1 to 2.0 mg/L. For higher concentrations, use an aliquot from the diluted sample.1.2 This test method has been used successfully with reagent grade, natural, and treated sanitary effluent waters. It is the user's responsibility to assure the validity of the test method on any untested matrices.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 hazards, see Section 9.

Standard Test Method for Thiocyanate in Water

ASTM D3561-02 用原子吸收分光光度法测定微咸水,海水和盐水中锂钾和钠离子含量的标准试验方法

1.1 This test method covers the determination of soluble lithium, potassium, and sodium ions in brackish water, seawater, and brines by atomic absorption spectrophotometry.1.2 Samples containing from 0.1 to 70 000 mg/L of lithium, potassium, and sodium may be analyzed by this test method.1.3 This test method has been used successfully with artificial brine samples. It is the user's responsibility to ensure the validity of this test method 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.

Standard Test Method for Lithium, Potassium, and Sodium Ions in Brackish Water, Seawater, and Brines by Atomic Absorption Spectrophotometry

ASTM D3372-02(2007)e1 水中钼含量的标准测试方法

Molybdenum can be found in waste that results from chemical cleaning of components in which the metal is alloyed. National Pollution Discharge Elimination System (NPDES) permits or other standards, or both, require monitoring pollutants in waste discharged onto the water shed of, or into, navigable waters, and those disposed of in such a manner that eventual contamination of underground water could result. This test method affords an accurate and sensitive means of determining compliance with those permits.1.1 This test method covers the determination of dissolved and total recoverable molybdenum in most waters, wastewaters, and brines by atomic absorption spectroscopy.1.2 This test method is applicable in the range from 1 to 25 g/L of molybdenum. The range may be extended by dilution of the sample.1.3 This test method has been used successfully with natural and reagent waters. It is the user's responsibility to ensure the validity of this test method for waters of untested matrices.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 Note 3 and Note 9.

Standard Test Method for Molybdenum in Water

ASTM D6764-02(2007) 从明渠中采集水温、溶解氧浓度、具体电导性和PH值的标准指南

1.1 This guide describes procedures to collect cross-sectional means of temperature, dissolved oxygen, specific electrical conductance, and pH of water flowing in open channels.1.2 This guide provides guidelines for preparation and calibration of the equipment to collect cross-sectional means of temperature, dissolved oxygen, specific electrical conductance, and pH of water flowing in open channels.1.3 This guide describes what equipment should be used to collect cross-sectional means of temperature, dissolved oxygen, specific electrical conductance, and pH of water flowing in open channels.1.4 This guide covers the cross-sectional means of temperature, dissolved oxygen, specific electrical conductance, and pH of fresh water flowing in open channels.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 requirements prior to use.

Standard Guide for Collection of Water Temperature, Dissolved-Oxygen Concentrations, Specific Electrical Conductance, and pH Data from Open Channels

ASTM D3223-02 水中总贡含量的标准试验方法

1.1 This test method covers the determination of total mercury in water in the range from 0.5 to 10.0 g Hg/L (1). The test method is applicable to fresh waters, saline waters, and some industrial and sewage effluents. It is the user's responsibility to ensure the validity of this test method for waters of untested matrices.1.1.1 The analyst should recognize that the precision and bias of this standard may be affected by the other constituents in all waters, as tap, industrial, river, and wastewaters. The cold vapor atomic absorption measurement portion of this method is applicable to the analysis of materials other than water (sediments, biological materials, tissues, etc.) if, and only if, an initial procedure for digesting and oxidizing the sample is carried out, ensuring that the mercury in the sample is converted to the mercuric ion, and is dissolved in aqueous media (2,3).1.2 Both organic and inorganic mercury compounds may be analyzed by this procedure if they are first converted to mercuric ions. Using potassium persulfate and potassium permanganate as oxidants, and a digestion temperature of 95176;C, approximately 100 % recovery of organomercury compounds can be obtained (2,4).1.3 The range of the test method may be changed by instrument or recorder expansion or both, and by using a larger volume of sample.1.4 A method for the disposal of mercury-containing wastes is also presented (Appendix X1) (5).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 specific hazard statements, see 7.8 and 10.8.2.

Standard Test Method for Total Mercury in Water

ASTM D4282-02 用微扩散法测定水和污水中游离氰化物的标准试验方法

This test method is useful in distinguishing between the potentially available free cyanide (total cyanide) and the free cyanide actually present. This test method provides a convenient technique for making on-site free cyanide determinations.1.1 This test method covers the determination of free cyanides in waters and wastewaters. Free cyanide is here defined as the cyanide which diffuses as cyanide (HCN), at room temperature, from a solution at pH 6.1.2 This test method does not include complexes that resist dissociation, such as hexacyanoferrates and gold cyanide, nor does it include thiocyanate and cyanohydrin.1.3 This test method may be applied to water and wastewater samples containing free cyanide from 10 to 150 956;g/L. Greater concentrations may be determined by appropriate dilution.1.4 This test method has been fully validated by collaborative testing as specified by Practice D 2777.1.5 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 specific hazard statements, see 8.6, 8.9, Section 9, and 12.2.1.

Standard Test Method for Determination of Free Cyanide in Water and Wastewater by Microdiffusion

ASTM D3651-02 微咸水,海水和盐水中钡含量的标准试验方法

1.1 This test method covers the determination of soluble barium ion in brackish water, sea-water, and brines by atomic absorption spectrophotometry.1.2 The actual working range of this test method is 1 to 5 mg/L barium.1.3 This test method was used successfully on artificial brine samples. It is the user's responsibility to ensure the validity of this test method 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.

Standard Test Method for Barium in Brackish Water, Seawater, and Brines