Project No.ISO 16221:2001
Title<p>This International Standard specifies five methods for determining the ultimate aerobic biodegradability of organic</p> <p>compounds in the marine environment by aerobic microorganisms in static aqueous test systems. Standard</p> <p>degradation methods developed for testing in fresh water are modified and adapted to marine conditions. These</p> <p>methods are the DOC die-away test (ISO 7827), the closed bottle test (ISO 10707), the two-phase closed bottle</p> <p>test (ISO 10708), the CO2 evolution test (ISO 9439) and the CO2 headspace test (ISO 14593).</p> <p>The methods apply to organic compounds which</p> <p>a) are water-soluble under the conditions of the test used;</p> <p>b) are poorly water-soluble under the conditions of the test used, in which case special measures may be</p> <p>necessary to achieve good dispersion of the compound (see for example, ISO 10634);</p> <p>c) are volatile, provided that an appropriate test with suitable conditions is used;</p> <p>d) are not inhibitory to the test microorganisms at the concentration chosen for the tests. The presence of</p> <p>inhibitory effects can be determined as specified in this International Standard.</p> <p>NOTE The conditions described in this International Standard do not always correspond to the optimal conditions for</p> <p>allowing the maximum degree of biodegradation to occur. For biodegradation methods in fresh water see ISO 14593 and</p> <p>ISO 15462, and for biodegradation at low concentrations see ISO 14592.</p>
Registration number (WIID)30205
Scope<p>This International Standard specifies five methods for determining the ultimate aerobic biodegradability of organic</p> <p>compounds in the marine environment by aerobic microorganisms in static aqueous test systems. Standard</p> <p>degradation methods developed for testing in fresh water are modified and adapted to marine conditions. These</p> <p>methods are the DOC die-away test (ISO 7827), the closed bottle test (ISO 10707), the two-phase closed bottle</p> <p>test (ISO 10708), the CO2 evolution test (ISO 9439) and the CO2 headspace test (ISO 14593).</p> <p>The methods apply to organic compounds which</p> <p>a) are water-soluble under the conditions of the test used;</p> <p>b) are poorly water-soluble under the conditions of the test used, in which case special measures may be</p> <p>necessary to achieve good dispersion of the compound (see for example, ISO 10634);</p> <p>c) are volatile, provided that an appropriate test with suitable conditions is used;</p> <p>d) are not inhibitory to the test microorganisms at the concentration chosen for the tests. The presence of</p> <p>inhibitory effects can be determined as specified in this International Standard.</p> <p>NOTE The conditions described in this International Standard do not always correspond to the optimal conditions for</p> <p>allowing the maximum degree of biodegradation to occur. For biodegradation methods in fresh water see ISO 14593 and</p> <p>ISO 15462, and for biodegradation at low concentrations see ISO 14592.</p>
StatusStandarts spēkā
ICS group13.060.70