Collaborative study of the 2,4-dinitrophenyl ether multiresidue method for use in determining four carbamate pesticides.

E R Holden

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PubMed · 806576

Collaborative study of the 2,4-dinitrophenyl ether multiresidue method for use in determining four carbamate pesticides.

E R Holden

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Abstract

Eight laboratories tested the 2,4-dinitrophenyl ether method for determining carbamate pesticide residues by gas-liquid chromatography. Propoxur, carbofuran, carbanolate, and carbaryl in apples, corn, green beans, and a leafy vegetable (kale, collards, cabbage, or turnip greens) were determined at the fortification levels of 0.1, 0.2, and 0.5 ppm. Average recoveries of propoxur were 87-95%; carbofuran, 87-100%; carbanolate, 89-102%; and carbaryl, 77-92%. No serious background problems were encountered, other than that from field-incurred carbaryl residues in apples. The study revealed the need for certain precautions in determining carbaryl because of its instability in analytical operations. The method has been adopted as official first action.

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Carbamates Carbaryl Carbofuran Chlorobenzenes Chromatography, Gas Drug Stability Fruit Insecticides Methods Nitrobenzenes Pesticide Residues Phenyl Ethers Plants, Edible Propoxur Vegetables Journal Article

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E R Holden. 1975. Collaborative study of the 2,4-dinitrophenyl ether multiresidue method for use in determining four carbamate pesticides.. https://pubmed.ncbi.nlm.nih.gov/806576/

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