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Basic dataStandard ID: HJ 173-2017 (HJ173-2017)Description (Translated English): Technical specifications for development of environmental reference materials Sector / Industry: Environmental Protection Industry Standard Classification of Chinese Standard: A00 Word Count Estimation: 15,169 Date of Issue: 2017-12-29 Date of Implementation: 2018-04-01 Older Standard (superseded by this standard): HJ/T 173-2005 Regulation (derived from): Ministry of Environmental Protection Bulletin 2017 No. 86 Issuing agency(ies): Ministry of Ecology and Environment HJ 173-2017: Technical specifications for development of environmental reference materials---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.People's Republic of China national environmental protection standards Replacing HJ/T 173-2005 Environmental standard sample research and reproduction of technical specifications Technical specifications for development of environmental reference materials 2017-12-29 Posted 2018-04-01 implementation Ministry of Environmental Protection released Directory Foreword ..ii 1 scope of application .1 2 Normative references .1 3 Terms and definitions 1 4 management requirements .2 5 technical requirements .2 Appendix A (Normative) Environmental standard sample uniformity test .8 Appendix B (Normative) Environmental Standard Sample Stability Test 10 ForewordIn order to carry out "Environmental Protection Law of the People's Republic of China", protect the environment, protect human health, standardize environmental standards Research duplication, to ensure that environmental standards sample size is accurate and reliable, the development of this standard. This standard is mainly based on "Standard Sample Working Guideline" (GB/T 15000) series of standards and ISO /REMCO latest hair Cloth of the standard sample technical guide, combined with the environmental standard sample research copy of the technical characteristics of their own, provides a national environmental standards Product research and replication management requirements and environmental standards sample design, preparation, uniformity of research and testing, stability research and testing, Determination, the value of the characteristics of the assessment and certification, certification and labeling, packaging, storage and transportation, repeated preparation of the technical requirements of the process. This standard is the "Environmental Standard Sample Copy Technical Specifications" (HJ/T 173-2005) amendment. "Environmental standard sample research and copying technical specifications" (HJ/T 173-2005) was first released in.2005, the original standard drafting The unit is the State Environmental Protection Administration standard sample research institute. This is the first revision. The main contents of the revision are as follows. - Amendments to the definitions of environmental standard samples and national environmental standard samples; - Organizational and management requirements modified to manage requirements and adjust some of the terms; - Increase the environmental standard sample preparation technical requirements; - Perfected the environmental standard sample uniformity research and testing of technical requirements; - Perfected the technical requirements for research and test of stability of environmental standard samples; - Perfected the environmental standard sample determination of technical requirements; - Added Appendix A, Appendix B. Since the implementation of this standard date, "Environmental Standards Sample Copy Technical Specifications" (HJ/T 173-2005) abolished. This standard Appendix A, Appendix B is a normative appendix. This standard by the Environmental Protection Department of Environmental Monitoring Division and Science and Technology Standards Division to develop. This standard was drafted. Sino-Japanese Friendship Environmental Protection Center. This standard MEP approved on December 29,.2017. This standard since April 1,.2018 come into operation. This standard is interpreted by the MEP. Environmental standard sample research and reproduction of technical specifications1 scope of applicationThis standard specifies the management of national environmental standards sample research copy requirements and environmental standards sample project design, sample system Research and test of uniformity, research and test of stability, measurement of characteristic value, evaluation and indication of characteristic value, certificate and standard Sign, packaging, storage and transportation, repeat preparation and other technical requirements. This standard applies to the research and development of environmental standard samples.2 Normative referencesThis standard references the following documents or the terms of them. For undated references, the effective version applies In this standard. GB/T 4882 statistical data processing and interpretation of normality test GB/T 8170 rounded repair rules and limit values of the representation and judgment GB/T 15000.3 standard sample work guidelines (3) standard sample set the general principles and statistical methods GB/T 15000.4 standard sample work guidelines (4) standard sample certificate and label content GB/T 15000.6 standard sample work guidelines (6) Standard sample packaging GB/T 15000.7 standard sample work guidelines (7) standard sample producer's general requirements JJF 1059.1 Measurement Uncertainty Assessment and Expression3 Terms and definitions3.1 Environmental standards sample environmental reference material One or more environmental samples or materials that are sufficiently uniform and stable to pass the technical review and are accompanied by a certificate of use, Mainly used for calibration and verification of environmental monitoring and analysis equipment, evaluation and verification of environmental monitoring and analysis methods or to determine other environmental samples The characteristic value. 3.2 National environmental standards sample national certified environmental reference material Through the technical evaluation of experts organized by the competent department of national environmental protection, the competent department of national standardization shall approve, issue, Authorized production, the use of metrologically validated procedures for the determination of one or more of the characteristics of the environmental standard samples, with national standard Quasi-sample certificates provide statements of stated property values and their uncertainty and traceability. 3.3 Synthetic matrix environmental standard sample synthetic matrix environmental reference material Usually pure chemical reagents (including pure gas) as the raw material for the preparation of environmental standards known as the composite substrate environmental standards Samples, such as environmental monitoring and analysis of standard solution, the standard gas, water quality standards and other samples. 3.4 Natural matrix environmental standard sample natural matrix environmental reference material Environmental standards will be prepared from the actual sample of environmental standards as natural samples of the substrate environment standards, such as soil standards Samples, airborne particles, such as standard samples. 3.5 Primary method The measurement method with the highest metrological characteristics, the operation of which can be completely described and understood, can be based on the International System of Units (SI) units make a complete statement of their uncertainty.4 management requirements4.1 The competent department of environmental protection of the country is the technical focal point for environmental standard samples and organizes the development of national environmental standard samples Research copy plan preparation, implementation and review. 4.2 The national standardization authorities for the national environmental standards unified centralized unit, unified management of national environmental standards Product research replication plan preparation, implementation, examination and approval of the release and use of supervision. 4.3 Research units should be based on replication of national environmental standards sample research organizations to carry out environmental standards sample research work. 4.4 Research units should be based on the actual needs of national environmental protection standard preparation of environmental standards research program Project proposals, and the project proposal through the National Standard Technical Committee of Standardization Technical Committee samples of environmental standards report State Environmental Protection Administration and the National Standard Technical Committee review. 4.5 The research and reproduction unit shall have the necessary workplaces, measuring equipment and management necessary for carrying out environmental standard sample preparation and replication And professional and technical personnel, as well as by GB/T 15000.7 provisions of the establishment of quality management system. 4.6 The research unit shall take overall responsibility for the quality and technical specifications of the standard sample of its research and development environment.5 technical requirements5.1 Project Design 5.1.1 Environmental standards The design of the sample research project involves the preparation of environmental standards and the amount of material required. Sex, stability and determination of the design of the study, and meet the relevant requirements GB/T 15000.3 requirements. 5.1.2 The research unit shall determine the technical route of research and development and the uncertainty of the characteristic value according to the intended use of the environmental standard sample The level to be achieved. 5.1.3 The research replicator shall conduct full investigation and technical demonstration on the containers used for filling the environmental standard samples to ensure the filling Container to meet the relevant provisions of GB/T 15000.6. 5.2 Sample Preparation 5.2.1 Preparation of the choice 5.2.1.1 Environmental standards The choice of sample preparation method should be based on the existing technical conditions and intended use of such decisions. 5.2.1.2 Environmental standards Most of the samples prepared by batch method, that is, a batch of environmental characteristics of the same value Samples, such as water quality standards, soil standards, sediment standards, biological standards, standards, etc .; also One-piece method can be used to prepare only one environmental standard sample, such as standard gas. 5.2.2 choice of raw materials 5.2.2.1 Preparation of raw materials should have the uniformity and stability of the sample for environmental standards. 5.2.2.2 Preparation of raw materials should be reproducible and sufficient quantity to meet the actual needs of environmental monitoring. 5.2.3 Preparation of synthetic matrix environment standard samples 5.2.3.1 The chemical reagents used to prepare standard samples of the synthetic matrix environment should be tested before use using proven analytical methods Method of its purity and major impurities were analyzed and confirmed, and to meet the quality standards of environmental samples. 5.2.3.2 Environmental standards used for analytical calibration Standard samples are generally copied by the research unit to confirm the purity of the chemical reagents and After the national metrological verification/calibration of scales, measuring devices and other accurate preparation, and to research units based on independent measurement data to assess Set its characteristic value. 5.2.3.3 Environmental standards used for quality control Samples are generally copied by research institutes based on environmental background or environmental management Standard needs, the use of chemical reagents have been confirmed purity and through the national metrology test/calibration of the scales, measuring devices and other accurate with Based on the data from several qualified laboratories, the characteristic values were evaluated. 5.2.4 Preparation of standard samples of natural substrate environment 5.2.4.1 The collection of standard samples of natural substrate environment should take full account of its intended use to ensure that sampling is representative. If the system Preparation of a standard sample of a natural substrate with a specific contaminant can be achieved by quantitatively adding a target contaminant Method to achieve. 5.2.4.2 The preparation of standard sample of natural substrate environment should be based on the actual situation to choose a reasonable preparation procedures and processing technology. In the preparation process should pay attention to prevent the pollution of foreign objects, to avoid the processing equipment, appliances to be determined the value of the impact of the value to ensure the most Made of natural substrate after the standard sample has sufficient uniformity and stability. 5.2.4.3 Natural matrix environmental standard samples are generally based on a number of qualified laboratories jointly measured data as the basis for assessment Its characteristic value. 5.3 Uniformity research and test 5.3.1 Uniformity study 5.3.1.1 Environmental standards Samples shall be homogenized using suitable techniques and mixing techniques. 5.3.1.2 For the environmental standard samples prepared by the batch method, the uniformity of the characteristic values in the bottle and the bottle shall be separately studied. 5.3.1.3 An environmental standard sample prepared using a one-piece method is to study the uniformity of the characteristic values within the bottle. High pressure gas Standard samples to carry out the study of uniformity within the bottle to undergo a decompression test to determine the pressure changes on the chemical composition. 5.3.1.4 bottle uniformity study Can be repeated measurement of variance analysis of experimental design, that is, randomly selected each A unit of samples for equal number of repeated measurements. Through the study of bottle uniformity can be estimated due to uneven bottle may cause the characteristics Value uncertainty. 5.3.1.5 bottle homogeneity study can be repeated measurement of variance analysis of experimental design, that is, the first bottle of sample points Into multiple sub-samples, and then each sub-sample repeated measurements such as the number of times. 5.3.2 Uniformity test and test 5.3.2.1 Uniformity test sampling methods include simple random sampling, stratified random sampling and systematic sampling. When Preparation of the total number of environmental standard sample unit is greater than 1000, the random sample should be not less than 3 N (N is the total number of units); When the total number of environmental standard samples prepared is greater than 100 and less than or equal to 1000, the random sampling number should not be less than 10 When the total number of units of the prepared environmental standard sample is less than or equal to 100, the random sampling number should not be less than the total number of units 10% and no less than 3. 5.3.2.2 Homogeneity test The sampling sequence should be randomized as far as possible, and as far as possible in the experimental conditions and equipment The same state of the situation completed. Environmental standards with multiple characteristic values are available in representative and non-uniform properties Uniformity test. 5.3.2.3 The uniformity test shall be carried out under repetitive conditions. The repeatability standard deviation of the measurement method should be small, Repeatability Uncertainty of Homogeneity Test (Repeatability Standard Deviation of Measurement Method/Number of Repeated Measurement of Measurement Method) Should be less than one third of the standard uncertainty of the composite of characteristic values. If you can not meet the above conditions, should consider the repeatability standard deviation Impact on uniformity test. 5.3.2.4 Uniformity test generally use one-way analysis of variance, the calculation method in Appendix A. Bottleneck Uniformity Assessment The F-test (95% confidence level) was used to compare the statistical existence of the measurement variance between the bottle and the measurement variance within the bottle Significant differences; F-test (95% confidence level) may also be used to assess in-bottle homogeneity studies. 5.3.2.5 Uniformity assessment can also be assessed by the homogeneity of the characteristics of the test and the uncertainty of the value of the comparison, When the uniformity of the tested property is less than one-third of the uncertainty of the fixed value, it is considered that the uniformity of the sample is good. Uniformity of detection characteristics of uncertainty is significantly greater than the uncertainty of the value, and the expected value of the characteristics of the main source of uncertainty, That the sample is not uniform; when the seizure of the uniformity of uncertainty and uncertainty of the value of the same size, and the characteristic value The expected uncertainty of the target can not be ignored compared to non-time, you should consider the synthesis of the standard sample of environmental uncertainty Sexual uncertainty. 5.3.2.6 When the minimum sample size is less than the standard sample unit sample size (such as soil, particles and other samples), you need to really Set the minimum sample size. The minimum sample size can be determined by experimenting with different sample sizes, as well as using homogeneity studies and stability Sex studies, calibration studies, and inter-laboratory collaborative sampling. 5.3.2.7 If the in-bottle uniformity uncertainty can not be neglected in the minimum sampling volume, the uniformity uncertainty should include the bottle Uniformity of uncertainty. 5.4 Stability studies and tests 5.4.1 Stability Study 5.4.1.1 Environmental standards stability of the sample study Under the conditions of storage and transportation of environmental standard samples with time change The trend may be judged by the variability of the property values that may be caused, including long-term stability studies and transport stability studies. 5.4.1.2 Study on long-term stability The main study of different storage conditions (such as temperature, humidity, pressure, light, stability, Packaging options, etc.) under the environmental characteristics of the standard sample with storage time trends. Long-term stability studies usually hold at least Continued for one year; accelerating long-term stability studies can shorten the inspection time according to different extreme storage conditions. Environmental standards in the long sample When the kinetic mechanism of the change of characteristic value during storage is unclear or very slow, the trend of change can be analyzed by the linear fitting model Some of the environmental standards in the long-term storage of the characteristic changes in the obvious, according to its proven model is given The specified value and the uncertainty over time function, such as the radioactive decay of matter. 5.4.1.3 Transport stability The main study under the transport conditions of environmental standards sample characteristics in a short time trend. Transport stability study time should not be less than transport time. When the environmental standard sample value changes significantly during transport When trying to improve the preparation of environmental standards samples or shipping conditions. 5.4.2 Stability experiments and tests 5.4.2.1 Stability Tests and tests should be performed as reproducibly as possible in the laboratory. Ring with multiple property values Habitat standard samples can choose to have a representative and easy to change the characteristics of the stability test. 5.4.2.2 Stability The experimental design includes classical stability studies and synchronization stability studies. Classical stability studies should be used Good repr......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of HJ 173-2017_English be delivered?Answer: Upon your order, we will start to translate HJ 173-2017_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. 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