GB/T 19276.2-2003
Determination of the ultimate aerobic biodegradability of plastic materials in an aqueous medium--Method by analysis of evolved carbon dioxide (English Version)

Standard No.

GB/T 19276.2-2003

Language

Chinese, Available in English version

Release Date

2003

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Latest

GB/T 19276.2-2003

Scope

This standard specifies that under the test conditions, the test material is exposed to the aqueous culture solution prepared by activated sludge, compost or soil, and the aerobic organism of the test material, including plastics containing additives, is determined by measuring the amount of carbon dioxide released. method of disaggregation. If activated sludge without proper treatment is used as the inoculum, this test only simulates the biodegradation process in a natural aqueous environment; if a mixed or pre-exposed inoculum is used, this method can be used to determine the potential of the test material. biodegradability. The test conditions adopted in this standard are not necessarily the best conditions for producing maximum biodegradability, but this standard is designed to determine the potential biodegradability of materials or to indicate the biodegradability of materials in natural environments. The accuracy of biodegradability assessment can be improved by calculating the carbon balance (optional, see Appendix C). The method is applicable to the following materials: - natural and/or synthetic polymers, copolymers or mixtures thereof; - plastic materials containing additives such as plasticizers, pigments or other compounds; - water-soluble polymers; - Under the test conditions, materials that do not have an inhibitory effect on the microorganisms in the inoculum, the inhibitory effect can be measured by inhibition control or other appropriate methods, if the test material has an inhibitory effect on the inoculum, it can be tested at a lower test concentration Use other inoculum or pre-exposed inoculum.

GB/T 19276.2-2003 history

• 2003 GB/T 19276.2-2003 Determination of the ultimate aerobic biodegradability of plastic materials in an aqueous medium--Method by analysis of evolved carbon dioxide

GB/T 19276.2-2003 -All Parts