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20
CH3041
TOXICS
6) Toxic
substances are
those which are harmful to living organisms because of
detrimental effects on tissues, organs or
biochemical processes. eg. pesticide DDT
detrimental effects on tissues, organs or
biochemical processes. eg. pesticide DDT
Toxicity Characteristic Leaching Procedure
A typical
sequential process for testing the availability
of organic & inorganic toxics in liquid, solid and biphasic wastes.
1) For biphasics the solid is separated out.
2) Solid is ground if nec. to S.A. > 3.1cm2 / g.
3) TCLP extracts organics from solid for 18h
pH < 5 CH3COOH buffer 4.93, pH > 5 CH3COOH
pH < 5 CH3COOH buffer 4.93, pH > 5 CH3COOH
4) Analysis for VOCs, Semi-VOCs, metals.
