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Chemicals -- Ready biodegradability -- Modified MITI test (I)
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Basic data
| Standard ID | GB/T 21802-2008 (GB/T21802-2008) |
| Description (Translated English) | Chemicals -- Ready biodegradability -- Modified MITI test (I) |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | A80 |
| Classification of International Standard | 13.300; 13.020.40 |
| Word Count Estimation | 12,132 |
| Date of Issue | 2008-05-12 |
| Date of Implementation | 2008-09-01 |
| Adopted Standard | OECD No.301C-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 improvement MITI test method overview, test preparation, test procedures, quality assurance and quality control, data and reports. This standard applies to water-soluble or insoluble in water, adsorption, volatile or non- volatile chemicals rapid biodegradability. |
GB/T 21802-2008: Chemicals -- Ready biodegradability -- Modified MITI test (I)
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Chemicals. Ready biodegradability. Modified MITI test (I)
ICS 13.300; 13.020.40
A80
National Standards of People's Republic of China
Chemicals biodegradability
Modified MITI test (Ⅰ)
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
Foreword
This standard is identical with the Organisation for Economic Co-operation and Development (OECD) guidelines for testing of chemicals No. 301C (1992 Nian) "Improved MITI
(Ⅰ) test "(in English).
This standard made the following editorial changes.
--- The units of measurement to our legal units of measurement.
This standard Annex A, Annex B and Annex C is informative appendix.
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. Nanjing Institute of Environmental Sciences Department of Environmental Protection, the test center in Shanghai, Shenyang Chemical Research Institute safety assessment
Price Center.
The main drafters of this standard. Yang Li, Liu Chun new, high reflect the new, mono-n-Jun, Liu Jining, Chen Xiaoqian, Ding Qi.
Chemicals biodegradability
Modified MITI test (Ⅰ)
1 Scope
This standard specifies the chemical biodegradability Modified MITI test (Ⅰ) method overview, test preparation, test procedures, quality
Assurance and quality control, data and reports.
This standard applies to water-soluble or insoluble in water, adsorption, volatile and non-volatile chemicals 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
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).
2.6
Start of the test to the degradation rate of 10% of the period.
2.7
10d test time biodegradation rate of 10% after.
2.8
Standstill period to the end of the degradation rate of 90% of the maximum degradation rate of the period.
3 test substance information
a) the formula;
...
