G04 基础标准与通用方法 标准查询与下载

ISO 12963:2017 气体分析. 采用比较法测定基于单点和两点校准的混合气体组成

Gas analysis - Comparison methods for the determination of the composition of gas mixtures based on one- and two-point calibration

BS ISO 16962:2017 表面化学分析. 采用辉光放电光发射光谱法分析锌和/或铝基金属涂层

Surface chemical analysis. Analysis of zinc- and/or aluminium-based metallic coatings by glow-discharge optical-emission spectrometry

BS ISO 15470:2017 表面化学分析.X射线光电光谱法.选定的仪器性能参数的描述

Surface chemical analysis. X-ray photoelectron spectroscopy. Description of selected instrumental performance parameters

ISO 15470:2017 表面化学分析. X射线光电子能谱. 选择仪器性能参数说明

Surface chemical analysis - X-ray photoelectron spectroscopy - Description of selected instrumental performance parameters

DIN 66136-1:2017 利用气体化学吸附作用测定金属的分散度.第1部分:原理

Determination of the dispersion degree of metals using gas chemisorption - Part 1: Principles

ASTM E1950-17 对化学分析方法得出的分析结果进行报告的标准实施规程

4.1 A result must be stated to a sufficient number of digits so that a user receives both quantitative information and a measure of the variability of the value reported. 4.2 The range of application of most methods of chemical analysis is based upon the presumption that the quantitative results produced are to be used to compare the analyte content of the test material with specified limiting values. However, analytical results may be used legitimately for other purposes. If the same material is analyzed a number of times or a product is analyzed periodically during an interval of production, each set of results may be averaged to yield an average result having improved reliability, provided nothing has been done between analyses to modify the composition of the analyzed material. Results that fall below the lower limit, although not quantitative individually, contain compositional information and may be reported. The reporting system in this practice permits the analyst to indicate which values are likely to be rendered quantitative by averaging and which are not. 4.3 The system is simple enough to be used routinely in reporting results from standard methods and assists those untrained in statistics to apply results appropriately. 1.1 This practice covers the approximate number of digits required to express the expected precision of results reported from standard methods of chemical analysis. This practice provides selection criteria and proper form and symbols for coding results when necessary to indicate the relative reliability of results having small values. 1.2 Specifically excluded is consideration of report forms and the associated informational content of reports in which results are tabulated or transmitted. It is assumed that the reporting laboratory has established a report format to ensure proper identification of the materials tested, the nature and conditions of the test, the responsible personnel, and other related information in accordance with existing regulations and good laboratory practices. 1.3 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 Practice for Reporting Results from Methods of Chemical Analysis

ASTM D7651-17 氢燃料颗粒浓度的重量测量的标准试验方法

5.1 Low operating temperature fuel cells such as proton exchange membrane fuel cells (PEMFCs) require high purity hydrogen for maximum material performance and lifetime. Measurement of particulates in hydrogen is necessary for assuring a feed gas of sufficient purity to satisfy fuel cell and internal combustion system needs as defined in SAE J2719. The particulates in hydrogen fuel for fuel cell vehicles (FCV) and gaseous hydrogen powered internal combustion engine vehicles may adversely affect pneumatic control components, such as valves, or other critical system components. Therefore, the concentration of particulates in the hydrogen fuel should be limited as specified by ISO 14687-2, SAE J2719, or other hydrogen fuel quality specifications. 5.2 Although not intended for application to gases other than hydrogen fuel, techniques within this test method can be applied to gas samples requiring determination of particulate concentration. 1.1 This test method is primarily intended for gravimetric determination of particulate concentration in hydrogen intended as a fuel for fuel cell or internal combustion engine powered vehicles. This test method describes operating and quality control procedures required to obtain data of known quality satisfying the requirements of SAE J2719. This test method can be applied to other gaseous samples requiring determination of particulates provided the user’s data quality objectives are satisfied. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 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. 1.4 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 Gravimetric Measurement of Particulate Concentration of Hydrogen Fuel

ASTM D6144-17 采用毛细管气相色谱法分析AMS (α-甲基苯乙烯)的标准试验方法

5.1 This test method is suitable for setting specifications on the materials referenced in 1.2 and for use as an internal quality control tool where AMS is produced or is used in a manufacturing process. It may also be used in development or research work involving AMS. 5.2 This test method is useful in determining the purity of AMS with normal impurities present. If extremely high boiling or unusual impurities are present in the AMS, this test method would not necessarily detect them and the purity calculation would be erroneous. 1.1 This test method covers the determination of the purity of AMS (α-methylstyrene) by gas chromatography. Calibration of the gas chromatography system is done by the external standard calibration technique. 1.2 This test method has been found applicable to the measurement of impurities such as cumene, 3-methyl-2-cyclopentene-1-one, n-propylbenzene, tert-butylbenzene, sec-butylbenzene, cis-2-phenyl-2-butene, acetophenone, 1-phenyl-1-butene, 2-phenyl-2-propanol, trans-2-phenyl-2-butene, m-cymene, p-cymene, and phenol, which are common to the manufacturing process of AMS. The method has also been found applicable for the determination of para-tertiary-butylcatechol typically added as a stabilizer to AMS. The impurities in AMS can be analyzed over a range of 5 to 800 mg/kg by this method. (See Table 1.) The limit of quantitation for these these impurities averages 4 mg/kg, while the limit of detection averages 1.2 mg/kg. (See Table 1.) TABLE 1 Summary of Precision Data (mg/kg) Compound Repeatability (r) Reproducibility (R)......

Standard Test Method for Analysis of AMS (&x3b1;-Methylstyrene) by Capillary Gas Chromatography

ASTM C1733-17 采用分批处理法测定无机物种分布系数的标准试验方法

4.1 The distribution coefficient, Kd, is an experimentally determined ratio quantifying the distribution of a chemical species between a given fluid and solid material sample under certain conditions, including the attainment of constant aqueous concentrations of the species of interest. The Kd concept is used in mass transport modeling, for example, to assess the degree to which the movement of a species will be delayed by interactions with the local geomedium as the solution migrates through the geosphere under a given set of underground geochemical conditions (pH, temperature, ionic strength, etc.). The retardation factor (Rf) is the ratio of the velocity of the groundwater divided by the velocity of the contaminant, which can be expressed as: where: ρb   =   bulk density of the porous medium (mass/length 3) and ηe   =   effective porosity of the medium (unitless) expressed as a decimal. 4.2 Because of the sensitivity of Kd to site specific conditions and materials, the use of literature derived Kd values is strongly discouraged. For applications other than transport modeling, batch Kd measurements also may be used, for example, for parametric studies of the effects of changing chemical conditions and of mechanisms related to the interactions of fluids with solid material. 1.1 This test method covers the determination of distribution coefficients, Kd, of chemical species to quantify uptake onto solid materials by a batch sorption technique. It is a laboratory method primarily intended to assess sorption of dissolved ionic species subject to migration through pores and interstices of site specific geomedia, or other solid material. It may also be applied to other materials such as manufactured adsorption media and construction materials. Application of the results to long-term field behavior is not addressed in this method. Kd for radionuclides in selected geomedia or other solid materials are commonly determined for the purpose of assessing potential migratory behavior of contaminants in the subsurface of contaminated sites and out of a waste form and in the surface of waste disposal facilities. This test method is also applicable to studies for parametric studies of the variables and mechanisms which contribute to the measured

Standard Test Method for Distribution Coefficients of Inorganic Species by the Batch Method

ASTM D5440-17 测定脂肪和油熔点的标准试验方法

3.1 This test method is intended to determine the melting point of all normal animal and vegetable fats. 3.2 The natural fats and oils, that is, those of animal and vegetable origin, are mixtures of glycerides and other substances and consist of a number of components. They do not exhibit either a definite or sharp melting point. Fats pass through a stage of gradual softening before they become completely liquid. The melting point then shall be defined by the specific conditions of the method by which it is determined and, in this case, it shall be the temperature at which the sample becomes perfectly clear and liquid. 1.1 This test method is intended to determine the melting point of all normal animal and vegetable fats and oils. This test method was derived from ALCA H-16. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4 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 Determining the Melting Point of Fats and Oils

ASTM E222-17 采用乙酸酐乙酰化作用测定羟基的标准试验方法

4.1 Hydroxyl is an important functional group, and knowledge of its content is required in many intermediate and end use applications. The test methods described herein are for the determination of primary and secondary hydroxyl groups and can be used for the assay of compounds containing them. 1.1 These test methods cover the determination of hydroxyl groups attached to primary and secondary carbon atoms in aliphatic and alicyclic compounds and phenols. 1.2 Three test methods are given as follows: 8199; Sections Test Method A (Pressure Bottle Method) 8199;8 – 14 Test Method B (Reflux Method) 16 – 22 Test Method C (Perchloric Acid Catalyzed Method) 24 – 30 1.2.1 Test Method A is recommended for general use. Test Method B is included to give a standard procedure for the method that has been used widely. Test Method C is recommended when the results are required in a minimum period of time or where ambient temperature for the reaction is desired. 1.2.2 The results obtained using Test Methods A and B will be essentially the same, but the results obtained using Test Method C will be higher (up to approximately 48201;% relative) than those obtained using the other two methods. 1.2.3 Statements on precision are included with each test method. The precision of Test Methods A and C is consistent over a wide range of hydroxyl content (tested over hydroxyl number range of 250 to 1600), whereas Test Method B is less precise at the higher hydroxyl content level than it is at the lower hydroxyl con......

Standard Test Methods for Hydroxyl Groups Using Acetic Anhydride Acetylation

ASTM D4968-17 对塑料的试验方法和规格进行年度审查的标准实施规程

4.1 It is the intention of this practice, in addition to the Form and Style for ASTM Standards, to assist persons revising test methods and specifications in Committee D20 to ensure that all required elements are included and that the revised document is presented in the most user-friendly manner possible. 4.2 This practice is intended for use by Committee D20 when test methods and specifications under its jurisdiction are revised because of technical changes or upon five-year review. 4.3 The figures in Annex A1 contain three flowcharts. Fig. A1.1 is a flowchart that shows the review process for standards that have been revised or reapproved recently. Fig. A1.2 is a flowchart for standards that have neither been revised nor reapproved within five years of a new review. Fig. A1.3 is a flowchart for the precision and bias process in outline form. 4.4 Specific instructions to be followed when revising Committee D20 documents are given in this practice. 4.5 The model precision and bias (P and B) statements included in Annex A3 were developed to standardize the presentation of data. 1.1 This practice is intended to assist the subcommittees and sections of Committee D20 on Plastics with the process of standards evaluation during the five-year review mandated by ASTM or when changes to test methods and specifications are required. It is intended to complement the Form and Style for ASTM Standards (“Blue Book”) not replace it. Note 1: There is no known ISO equivalent to this standard. 1.2 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 Practice for Annual Review of Test Methods and Specifications for Plastics

ASTM D445-17 测定透明和不透明液体动粘度(和动力粘度计算)的标准试验方法

5.1 Many petroleum products, and some non-petroleum materials, are used as lubricants, and the correct operation of the equipment depends upon the appropriate viscosity of the liquid being used. In addition, the viscosity of many petroleum fuels is important for the estimation of optimum storage, handling, and operational conditions. Thus, the accurate determination of viscosity is essential to many product specifications. 1.1 This test method specifies a procedure for the determination of the kinematic viscosity, ν, of liquid petroleum products, both transparent and opaque, by measuring the time for a volume of liquid to flow under gravity through a calibrated glass capillary viscometer. The dynamic viscosity, η, can be obtained by multiplying the kinematic viscosity, ν, by the density, ρ, of the liquid. Note 1: For the measurement of the kinematic viscosity and viscosity of bitumens, see also Test Methods D2170 and D2171. Note 2: ISO 3104 corresponds to Test Method D4458201;–8201;03. 1.2 The result obtained from this test method is dependent upon the behavior of the sample and is intended for application to liquids for which primarily the shear stress and shear rates are proportional (Newtonian flow behavior). If, however, the viscosity varies significantly with the rate of shear, different results may be obtained from viscometers of different capillary diameters. The procedure and precision values for residual fuel oils, which under some conditions exhibit non-Newtonian behavior, have been included. 1.3 The range of kinematic viscosities covered by this test method is from 0.28201;mm2/s to 3008201;0008201;mm2/s (see Table A1.1) at all temperatures (see 6.3 and 6.4). The precision has only been determined for those materials, kinematic viscosity ranges and temperatures as shown in the footnotes to the precision section. 1.4 The values stated in SI units are to be regarded as standard. The SI unit used in this test method for kinematic viscosity is mm2/s, and the SI unit used in this test method for dynamic viscosity is mPa·s. For user reference, 1 mm2/s = 10-68201;m2/s = 1 cSt and 1 mPa·s = 1 cP = 0.001 Pa·s. 1.5 WARNING—Mercury has been designated by many regulatory agencies as a hazardous material that can cause central nervous system, kidney and liver damage. Mercury, or its vapor, may be hazardous to health and corrosive to materials. Caution should be taken when handling mercury and mercury containing products. See the applicable product Material Safety Data Sheet (MSDS) for details and EPA’s website—http://www.epa.gov/mercury/faq.htm—for additional information. Users should be aware ......

Standard Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and Calculation of Dynamic Viscosity)

SN/T 1732.20-2016 烟花爆竹用烟火药剂 第20部分：钡含量的测定 火焰原子吸收法

Pyrotechnic compositions for fireworks and firecrackers - Part 20: Determination of barium content by flame atomic absorption method

SN/T 4705-2016 化学品 蜜蜂幼虫单次暴露毒性试验

Chemical bee larvae single exposure toxicity test

SN/T 4704-2016 动力学参数等温检测 差示扫描量热法

Isothermal detection of kinetic parameters Differential scanning calorimetry

SN/T 4683-2016 乙烯-醋酸乙烯共聚物及其制品中甲酰胺的测定 气相色谱-质谱法

Determination of formamide in ethylene-vinyl acetate copolymer and its products by gas chromatography-mass spectrometry

SN/T 1828.15-2016 进出口危险货物分类试验方法 第15部分：自热固体

Test methods for classification of dangerous goods for import and export Part 15: Self-heating solids

SN/T 4681-2016 苯嘧磺草胺水分散粒剂中苯嘧磺草胺含量的测定 高效液相色谱法

Determination of saflufenacil content in saflufenacil water-dispersible granules by high performance liquid chromatography

HG/T 20654-2016 化工企业化学水处理系统监测与控制设计条件技术规范

本规范适用于化工企业新建、扩建和改建的化学水处理系统，不适用于工艺废水处理系统。

Technical code of design requirements for monitoring and control of chemical water treatment system in chemical plant