A method for the determination of ethyleneurea in foods as the pentafluorobenzamide

Newsome, W Harvey

doi:10.1021/jf60220a016

Cited by 9 publications

(2 citation statements)

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“…The residues in tomato were confirmed by high-resolution mass spectrometry with single ion monitoring as previously described (Newsome, 1978). The levels in tomatoes were similar to those observed in an earlier survey of commercial products (Newsome, 1978) and appeared independent of the application rate of mancozeb. Much less ethyleneurea was found than was anticipated from other studies (Lyman, 1971; Vonk, 1976) where levels ranged from 10 to…”

Section: Resultssupporting

confidence: 81%

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Residues of mancozeb, 2-imidazoline, and ethyleneurea in tomato and potato crops after field treatment with mancozeb

Newsome¹

1979

J. Agric. Food Chem.

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Mancozeb, 2-imidazoline, and ethyleneurea residues were determined in tomato and potato crops at various intervals for 28 days after field treatment with mancozeb. On tomato fruit mancozeb persisted for 28 days while no residues were found in potato tubers. Insignificant residues of 2-imidazoline were found in either crop, and low levels (<0.04 ppm) of ethyleneurea were present in tomatoes up to 28 days after spraying. Ethyleneurea was not detectable in potato tubers.

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Section: Resultssupporting

confidence: 81%

“…Ethyleneurea was extracted with acetone, derivatized with pentafluorobenzoyl chloride, and the derivative determined by gas-liquid chromatography of the fraction obtained by high-pressure liquid chromatography exactly as described (Newsome, 1978).…”

Section: Discussionmentioning

confidence: 99%