Simplified method for estimation of DDT and hexachlorocyclohexane residues in milk
- PMID: 6162832
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Simplified method for estimation of DDT and hexachlorocyclohexane residues in milk
J Assoc Off Anal Chem.
1981 Jan.
Abstract
A procedure that combines acetone-hexane extraction and cleanup by treatment with concentrated sulfuric acid is described for determining DDT and 1,2,3,4,5,6-hexachlorocyclohexane (HCH) residues in milk. Recoveries from samples fortified with 0.004-0.008 ppm of different HCH isomers and 0.01-0.02 ppm DDT and its metabolites ranged from 83.4 to 99.8%. The proposed method is simple and rapid, and does not require the use of costly adsorbents.
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