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GB/T 21801-2008 English PDF

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GB/T 21801-2008: Chemicals -- Ready biodegradability -- Manometric respirometry test
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PDF similar to GB/T 21801-2008


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Basic data

Standard ID GB/T 21801-2008 (GB/T21801-2008)
Description (Translated English) Chemicals -- Ready biodegradability -- Manometric respirometry test
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard A80
Classification of International Standard 13.300; 13.020.40
Word Count Estimation 17,169
Date of Issue 2008-05-12
Date of Implementation 2008-09-01
Adopted Standard OECD No.301F-1992, IDT
Regulation (derived from) Announcement of Newly Approved National Standards No. 7, 2008 (No. 120 overall)
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary This standard specifies the chemical biodegradability respiration measurement method test method outlined, test preparation, test procedures, quality assurance and quality control, data and reports. This standard applies to testing and evaluation of organic chemistry rapid biodegradability.

GB/T 21801-2008: Chemicals -- Ready biodegradability -- Manometric respirometry test

---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.
Chemicals. Ready biodegradability. Manometric respirometry test ICS 13.300; 13.020.40 A80 National Standards of People's Republic of China Chemicals biodegradability Respirometry test method Posted 2008-05-12 2008-09-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Table of Contents

Introduction Ⅲ 1 Scope 1 2 Terms and definitions 1 3 test substance information 2 4 Summary of Method 2 5 Test Preparation 2 6 Test Procedure 3 7 Quality Assurance and Quality Control 4 8 Data and Reports 4 Appendix A (informative) test substance on the growth inhibition of inoculum for 6 Annex B (informative) handling of insoluble test substances 7 Calculation and determination of Appendix C (informative) corresponding parameter 8 Annex D (informative) nitrification oxygen consumption correction 10 Annex E (informative) Respiratory Measurement Method Test Data Table 11

Foreword

This standard is identical with the Organisation for Economic Co-operation and Development (OECD) guidelines for testing of chemicals No. 301F (1992 Nian) "readily biodegradable . The breath test Metrology Law "(in English). This standard made the following editorial changes. --- The units of measurement to our legal units of measurement. The Standard Appendix A, Appendix B, Appendix C, Appendix D and Appendix E is an informative annex. This standard is managed by the National Standardization Technical Committee chemicals dangerous (SAC/TC251) and focal points. This standard is drafted by. Environmental Protection Department of Chemical Registration Center. Participated in the drafting of this standard. Shanghai Testing Center, Shanghai Academy of Environmental Sciences, Ministry of Environmental Protection, Nanjing Institute of Environmental Sciences. The main drafters of this standard. Nie Jinglei, Liu Chun new drainage mountains, Chen Xiaoqian, Yinhao Wen, Shen Xiang root, Liu Jining. Chemicals biodegradability Respirometry test method

1 Scope

This standard specifies the chemical biodegradability breath test measurement method method overview, test preparation, test procedures, quality assurance And quality control, data and reports. This standard applies to testing and evaluation of organic chemistry rapid biodegradability.

2 Terms and definitions

The following terms and definitions apply to this standard 2.1 Test substance exhibiting a limited time in contact with the inoculum biodegradability. 2.2 Test substance causes chemical changes in the structure characteristic of the process of loss under biological effect. 2.3 Solution, organic carbon content, usually through the 0.45μm membrane filter liquid organic carbon content, or by 4000r/min transfer Supernatant after centrifugation 15min organic carbon content. 2.4 The amount of oxygen consumed by the microbial decomposition of organic matter, can be expressed as the number of milligrams of oxygen (mg/mg) of the test substance consumed per milligram. 2.5 In strong acid and heating conditions, a certain amount of dichromate oxidation of reducing substances in water samples of the amount of oxidant consumed, can be expressed as millimoles per Oxygen milligrams (mg/mg) g of the test substance consumed. 2.6 Calculated according to the formula of the total amount of the test substance is completely oxidized oxygen required, it can be expressed as oxygen consumption per mg of the test substance in mg The number of grams (mg/mg). 2.7 Start of the test to the degradation rate of 10% of the period. 2.8 10d test time biodegradation rate of 10% after. 2.9 Standstill period to the end of the degradation rate of 90% of the maximum degradation rate of the period.

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