GB/T 44707-2024Chemicals—Enhanced ready biodegradability test (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting is required.

This document is consistent with GB/T 27850 "General principles for the rapid biodegradability of chemicals" and GB/T 21801 "General principles for the rapid biodegradability of chemicals".

GB/T 21802 "Modified MITI test for the ready biodegradability of chemicals (I)", GB/T 21803 "Ready biodegradability of chemicals. DOC reduction test", GB/T 21831 "Ready biodegradability of chemicals. Closed bottle test" GB/T 21856 “Test for Carbon Dioxide Generation of Ready Biodegradable Chemicals” and GB/T 21857 “Test for Rapid Biodegradability of Chemicals It should be used in conjunction with the OECD screening test for improved biodegradability.

Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.

This document is proposed and coordinated by the National Technical Committee for Standardization of Hazardous Chemicals Management (SAC/TC 251).

This document was drafted by: Institute of Microbiology, Guangdong Academy of Sciences (Guangdong Microbiological Analysis and Testing Center), Solid Waste Management Department of the Ministry of Ecology and Environment Chemical and Material Management Technology Center, China Inspection and Quarantine (Tianjin) Inspection and Testing Co., Ltd., Lubrizol Management (Shanghai) Co., Ltd., Shanghai Testing Center, Nanjing Institute of Environmental Sciences of the Ministry of Ecology and Environment, Shanghai Institute of Chemical Technology Testing Co., Ltd., Shenyang Shenyang Institute of Chemical Technology Testing Technology Co., Ltd.

Co., Ltd., China National Accreditation Service for Conformity Assessment, Wanhua Chemical Group Co., Ltd., FUCHS Lubricants (China) Co., Ltd., Special Technology Co., Ltd.

The main drafters of this document are: Xu Meiying, Mei Chengfang, Wu Xiaohuai, Deng Guirong, Liu Chunxin, Zeng Guoqu, Luo Fengjuan, Zhou Lili, Teng Xiaoming, Xing Weilong, Shu Yaogao, Rong Zhiyi, Ye Zhijun, Yang Xuefei, Zhou Binbin, Sun Shuai, and Qiao Jiancheng.

Introduction

When a compound does not show rapid biodegradability in a rapid biodegradability test, further screening is required.

Degradation tests, such as enhanced rapid biodegradability tests and inherent biodegradability tests, are recommended to identify potential persistence.

The enhanced ready biodegradability test is used to assess persistence, which provides a wider range of method choices and more comprehensive optimization conditions.

This document is incompatible with the general rules for ready biodegradability (GB/T 27850) and any of the test methods for ready biodegradability (GB/T 21801, GB/T 21802, GB/T 21803, GB/T 21831, GB/T 21856, GB/T 21857 and OECD Chemical Testing Guidelines No.310) and use the selected rapid biodegradability test standard as the basic method by In addition to the contents described in this document, other test contents and requirements can be found in the selected method standards.

When using this document to conduct tests using pre-exposure inocula or increasing inoculum concentrations and using the data obtained for regulatory purposes, consideration should be given to the trial Whether the test results are sufficient and valid.

Enhanced Ready Biodegradability Test for Chemicals

1 Scope

This document describes the method overview, test substance information, reference substances, test preparation, test Procedures, quality assurance and quality control, data, reporting of results.

This document applies to enhanced ready biodegradability testing of chemicals.

2 Normative references

GB/T 21801

GB/T 21802

GB/T 21803

GB/T 21831

GB/T 21856

GB/T 21857

GB/T 27850

3 Terms and Definitions

The following terms and definitions apply to this document.