GB/T 22047-2008: Plastics -- Determination of the ultimate aerobic biodegradability in soil by measuring the oxygen demand in a respirometer or the amount of carbon dioxide evolved

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Scope

This standard specifies the determination of plastic materials in soil by measuring the oxygen demand in a closed respirometer or measuring the amount of carbon dioxide released.
The final aerobic biodegradability. This standard adjusts the humidity of the test soil to obtain the best degree of biodegradability.
If unpre-exposed soil is used as an inoculum, this test only simulates the biodegradation process in a natural soil environment;
When using pre-exposed soil, this standard can be used to determine the potential biodegradability of the test material.
This standard applies 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 polymer;
--- Under the test conditions, the material will not inhibit the activity of microorganisms in the soil, and the inhibition can be applied to the inhibition control.
Or other appropriate method (see ISO 8192.1986) to measure. If the test material inhibits the activity of microorganisms in the soil
At the time of action, a lower concentration of test material, other inoculum or pre-exposed soil may be employed.

Basic Data

Standard ID	GB/T 22047-2008 (GB/T22047-2008)
Description (Translated English)	Plastics -- Determination of the ultimate aerobic biodegradability in soil by measuring the oxygen demand in a respirometer or the amount of carbon dioxide evolved
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	G31
Classification of International Standard	83.080.01
Word Count Estimation	17,157
Date of Issue	2008-06-18
Date of Implementation	2009-05-01
Quoted Standard	ISO 8192-1986; ISO 10381-6-1993; ISO 10390-1994; ISO 10634-1995; ISO 10694-1995; ISO 11266-1994; ISO 11274-1998; ASTM D5988-1996
Adopted Standard	ISO 17556-2003, IDT
Regulation (derived from)	National Standard Approval Announcement 2008 No.10 (Total No.123)
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 method by measuring the carbon dioxide plate count of aerobic respiration closed side setting surplus or release. Determination of soil ultimate aerobic biodegradability of plastic materials capability. By adjusting the standard test soil moisture to get the best level of biodegradation rates. This standard applies to the following material: natural and (or) synthetic polymers, copolymers or mixtures thereof, plastics material or other compounds, such as slavery additives, , contains a water-soluble polymer such as plasticizers, under test conditions, the material does not produce inhibition of the activity of soil microorganisms, inhibitory control or other appropriate means suppression (see ISO 8192: 1986) be measured. If the test material on the activity of soil microorganisms are inhibited, the concentration of the test material can be low, inoculum or other set of pre-exposure of soil.