ANSI/ASTM D6340-1998
在水和堆肥环境中测定放射性同位素塑料氧化降解的方法

Test Methods for Determining Aerobic Biodegradation of Radiolabeled Plastic Materials in an (A) Aqueous or (B) Compost Environment

ANSI/ASTM D6340-1998 发布历史

These test methods directly determine the rate and degree of biological oxidation of carbon in plastic materials when placed in a composting environment containing simulated municipal solid waste or an aqueous environment under laboratory conditions. Test Method A utilizes a mixed culture derived from the target environment (waste water, sewage sludge, compost eluant, and other environmental sources). Temperature, mixing, and aeration are monitored and controlled. This method has the sensitivity to determine biodegradation at concentrations commonly found in these environments. Test Method B starts with fresh compost and proceeds through the normal composting process to an early mature stage. Temperature, aeration; and moisture are monitored and controlled. This method can determine biodegradation at levels of the plastic commonly expected in municipal solid waste. These test methods require that the target component of the plastic material be synthesized using the radioactive isotope carbon-14. Depending upon the objective, either a portion of the components of the plastic or all of the carbon can be uniformly labeled with carbon-14. The test method will determine how that labeled portion will be metabolized and biologically oxidized by the microorganisms in the system tested. These test methods can be applied to any carbon-14 labeled compound as well as for plastic materials that have been formulated to biodegrade in a natural aerobic environment. The synthesis and preparation of the radiolabled plastic is beyond the scope of these methods. Carbon-14 labeled polymers may be purchased from a number of commercial labs. There are no ISO test methods that are equivalent to the test methods in this standard. The safety problems associated with compost and radioactivity are not addressed in this standard. It is the responsibility of the user of this standard to establish appropriate safety and health practices. It is also incumbent on the user to conform to all the regulatory requirements, specifically those that relate to the use of open radioactive sources. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

ANSI/ASTM D6340-1998由美国国家标准学会 US-ANSI 发布于 1998，并于 1999-02-10 实施。

ANSI/ASTM D6340-1998 在中国标准分类中归属于: G31 合成树脂、塑料基础标准与通用方法，在国际标准分类中归属于: 13.030.40 废物处置和处理设备和装置。

ANSI/ASTM D6340-1998的历代版本如下：

• 1998年 ANSI/ASTM D6340-1998 在水和堆肥环境中测定放射性同位素塑料氧化降解的方法

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标准号

ANSI/ASTM D6340-1998

发布日期

1998年

实施日期

1999年02月10日

废止日期

无

中国标准分类号

G31

国际标准分类号

13.030.40

发布单位

US-ANSI

适用范围

These test methods directly determine the rate and degree of biological oxidation of carbon in plastic materials when placed in a composting environment containing simulated municipal solid waste or an aqueous environment under laboratory conditions. Test Method A utilizes a mixed culture derived from the target environment (waste water, sewage sludge, compost eluant, and other environmental sources). Temperature, mixing, and aeration are monitored and controlled. This method has the sensitivity to determine biodegradation at concentrations commonly found in these environments. Test Method B starts with fresh compost and proceeds through the normal composting process to an early mature stage. Temperature, aeration; and moisture are monitored and controlled. This method can determine biodegradation at levels of the plastic commonly expected in municipal solid waste. These test methods require that the target component of the plastic material be synthesized using the radioactive isotope carbon-14. Depending upon the objective, either a portion of the components of the plastic or all of the carbon can be uniformly labeled with carbon-14. The test method will determine how that labeled portion will be metabolized and biologically oxidized by the microorganisms in the system tested. These test methods can be applied to any carbon-14 labeled compound as well as for plastic materials that have been formulated to biodegrade in a natural aerobic environment. The synthesis and preparation of the radiolabled plastic is beyond the scope of these methods. Carbon-14 labeled polymers may be purchased from a number of commercial labs. There are no ISO test methods that are equivalent to the test methods in this standard. The safety problems associated with compost and radioactivity are not addressed in this standard. It is the responsibility of the user of this standard to establish appropriate safety and health practices. It is also incumbent on the user to conform to all the regulatory requirements, specifically those that relate to the use of open radioactive sources. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.