 |
| Purchase Information |
| Use this form to request purchase information on ASTM online subscriptions. |
|
|
Document ASTM D 6340 is offered by IHS as part of an online subscription. This subscription contains many documents on the same topic.
You may also purchase this document alone from the IHS Standards Store.
ASTM D 6340 Document Information:
Title
Standard Test Methods for Determining Aerobic Biodegradation of Radiolabeled Plastic Materials in an Aqueous or Compost Environment
ASTM International
Publication Date:
Nov 10, 1998
Scope:
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.
About IHS
IHS (NYSE: IHS) is a leading global provider of critical technical information, decision-support tools and related services in a number of industries including aerospace and defense, automotive, construction, electronics, and energy. IHS serves customers ranging from large governments and multinational corporations to smaller companies and technical professionals in more than 100 countries. IHS been in business for more than 45 years and employ more than 2,300 people around the world.
