71.040.40 化学分析 标准查询与下载



共找到 2467 条与 化学分析 相关的标准,共 165

Chromium ores-Determination of phosphorus content-Reduced molybdophosphate photometric method

ICS
71.040.40
CCS
发布
20221014
实施
20221014

Determination method of chloride ion content in waste sulfuric acid

ICS
71.040.40
CCS
G04
发布
2022-09-30
实施
2023-04-01

Determination method of calcium and magnesium ions in waste sulfuric acid

ICS
71.040.40
CCS
G04
发布
2022-09-30
实施
2023-04-01

This document specifies a glow discharge optical emission spectrometric method for the determination of the thickness and mass per unit area of single and metallic nanolayers on iron-based substrates. This method is applicable to single and metallic nanolayers, 10 nm to 100 nm thick, on iron-based substrates. The metallic elements of the layers are Cr, Ni, Ti, Mn and Al. Other elements that can be determined according to this document are P and S.

Surface chemical analysis — Analysis of metallic nanolayers on iron based substrates by glow-discharge optical-emission spectrometry

ICS
71.040.40
CCS
发布
2022-09-30
实施

Determination of thiocyanate content in coking wastewater

ICS
71.040.40
CCS
G76
发布
2022-09-30
实施
2023-04-01

Test method for phosphorus content of flame retardant chemicals

ICS
71.040.40
CCS
G70
发布
2022-09-30
实施
2023-04-01

Test method for hygroscopicity (moisture) of flame retardant chemicals phosphorus and nitrogen based flame retardant chemicals

ICS
71.040.40
CCS
G70
发布
2022-09-30
实施
2023-04-01

Determination method of chemical oxygen demand (COD) in waste sulfuric acid

ICS
71.040.40
CCS
G04
发布
2022-09-30
实施
2023-04-01

Flame retardant chemical pentaerythritol phosphate melamine salt

ICS
71.040.40
CCS
G71
发布
2022-09-30
实施
2023-04-01

Determination method of sodium ions in waste sulfuric acid

ICS
71.040.40
CCS
G04
发布
2022-09-30
实施
2023-04-01

This document specifies a method for determining the maximum count rate for an acceptable limit of divergence from linearity of the intensity scale in single ion counting time-of-flight (TOF) secondary ion mass spectrometers using a test based on isotopic ratios in spectra from poly(tetrafluoroethylene) (PTFE ) . It also includes a method to correct for intensity nonlinearity arising from intensity los t from a microchannel plate (MCP) or scintillator and photomultiplier followed by a time-to-digital converter (TDC ) detection s ys tem caused by secondary ions arriving during its dead-time. The correction can increase the intensity range for 95 % linearity by a factor of up to more than 50 so that a higher maximum count rate can be employed for those spectrometers for which the relevant correction formulae have been shown to be valid.

Surface chemical analysis — Secondary ion mass spectrometry — Linearity of intensity scale in single ion counting time-of-flight mass analysers

ICS
71.040.40
CCS
发布
2022-09-23
实施

1.1 This test method covers the determination of trace concentrations of iron in the range from 1 to 100 µg/g in a wide variety of products. 1.2 In determining the conformance of the test results using this method to applicable specifications; results shall be rounded off in accordance with the rounding-off method of Practice E29. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4 Consult current OSHA regulations, suppliers’ Safety Data Sheets, and local regulations for all materials used in this specification. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Standard Test Method for Iron in Trace Quantities Using the 1,10-Phenanthroline Method

ICS
71.040.40
CCS
发布
2022-09-01
实施

1.1 This test method describes the spectrophotometric determination of total aldehyde content in mono-, di-, and triethylene glycol (MEG, DEG, and TEG). Alkoxyalcohols (hemiacetals), if present, are co-determined, whereas dialkoxyalkanes (acetals), if present, are not. The results provide a measure of the purity of the sample with respect to total aldehyde content. 1.2 This test method is applicable to samples with total aldehyde concentration (as acetaldehyde) to 50 mg/kg or 35 mg ⁄kg (as formaldehyde). The limit of detection (LOD) is 0.4 mg ⁄kg and the limit of quantitation is 1.2 mg/kg. NOTE 1—LOD and LOQ were calculated using the lowest level sample in the ILS. 1.3 The following applies for the purposes of determining the conformance of the test results using this test method to applicable specifications, results shall be rounded off in accordance with the rounding-off method of Practice E29. 1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see Section 8 and 7.1.1 – 7.1.6. 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Standard Test Method for Aldehydes in Mono-, Di-, and Triethylene Glycol (using Spectrophotometry)

ICS
71.040.40
CCS
发布
2022-09-01
实施

1   Scope This document specifies a method for the quantitative depth profiling of amorphous heavy metal oxide ultrathin films on Si substrates using medium energy ion scattering (MEIS).

Surface chemical analysis. Depth profiling. Non-destructive depth profiling of nanoscale heavy metal oxide thin films on Si substrates with medium energy ion scattering

ICS
71.040.40
CCS
发布
2022-08-31
实施
2022-08-31

1   Scope This document describes a procedure for the quantitative characterization of the probe tip of an atomic force microscope (AFM) probe and a restoration of AFM topography images dilated by finite probe size. The three-dimensional shape of the probe apex is extracted by image reconstruction using suitable reference materials. This document is applicable to the reconstruction of AFM topography images of solid material surfaces.

Surface chemical analysis. Atomic force microscopy. Guideline for restoration procedure for atomic force microscopy images dilated by finite probe size

ICS
71.040.40
CCS
发布
2022-08-31
实施
2022-08-31

本文件给出了煤化工工业废水中主要无机污染物、有机污染物、需氧量、重金属元素、总碱度、总悬浮固体、总溶解固体、总有机碳和pH值检测方法的指南。 本文件适用于煤化工工业中煤制气废水、煤制油废水、煤制焦废水、煤制甲醇废水和煤制烯烃废水中主要污染物及其它项目的检测。

Coal Chemical Industry Wastewater Testing Guide

ICS
71.040.40
CCS
C252
发布
2022-08-15
实施
2022-08-15

本文件规定了采用电感耦合等离子体发射光谱法测定工业硫磺中铁、砷元素含量的试验方法。 本文件适用于工业硫磺中铁和砷含量的测定,铁元素测定范围0.05 mg/kg~500 mg/kg,砷元素测定范围0.05 mg/kg~100 mg/kg。超过此范围也可用本方法测定,但精密度未做考察。

Determination of Iron and Arsenic in Industrial Sulfur by Microwave Digestion-Inductively Coupled Plasma Emission Spectrometry

ICS
71.040.40
CCS
C261
发布
2022-08-15
实施
2022-08-15

本文件规定了柴油发动机氮氧化物还原剂 尿素水溶液(AUS 32)尿素含量的测定-全自动凯氏定氮仪法。 本文件适用于测定柴油车选择性催化还原系统用氮氧化物还原剂—尿素水溶液(AUS 32)中的尿素含量,当尿素水溶液中的尿素含量在30.0%~35.0%(质量分数),均可采用此方法测定。

Diesel engine nitrogen oxide reducing agent urea aqueous solution (AUS 32) Determination of urea content Automatic Kjeldahl method

ICS
71.040.40
CCS
C261
发布
2022-08-15
实施
2022-08-15

本文件规定了采用火花放电原子发射光谱实验过程中的一般要求与实验数据信息的存储内容要求。 本文件适用于火花放电原子发射光谱实验数据的存储。

Materials experimental data—Requirements for spark discharge atomic emission spectrometry data

ICS
71.040.40
CCS
M732
发布
2022-08-11
实施
2022-08-11

Determination of water — Karl Fischer method(General method)

ICS
71.040.40
CCS
发布
20220729
实施
20220729



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