Zobrazeno 1 - 10 of 39 pro vyhledávání: '"Herman Beckman"'
1
A method for the determination of toxaphene in the presence of DDT
Autor: Felix Erro, Arthur Bevenue, Herman Beckman
Publikováno v: Bulletin of environmental contamination and toxicology. 2(6)
The experienced residue analyst is quite familiar with the indecisive and continuum-type curve produced by the pesticide toxaphene (a mixture of compounds described as "chlorinated camphene") when it is analyzed by gas chromatography and the concomit
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3c51c764b0c2f6d065b8b3e21c740b85
https://pubmed.ncbi.nlm.nih.gov/24189963
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2
The effect of the column support material on the gas chromatographic resolution of methyl parathion, ethyl parathon, ethyl paraoxon, malathion, and malaoxon
Autor: James N. Ogata, Herman Beckman, Arthur Bevenue
Publikováno v: Journal of Chromatography A. 35:17-23
The gas chromatographic capabilities of commercially available solid supports produces from diatomaceous earths were compared, using QF-1 silicone (FS 1265, 10 000 centistokes) as the stationary liquid phase. The relative efficiencies of the columns
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cd569b91e7a8bf7d33d7718d901de0f8
https://doi.org/10.1016/s0021-9673(01)82344-x
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3
Effect of Frozen Storage on Parathion Residues
Autor: Herman Beckman, Wayne Thornburg
Publikováno v: Journal of Food Science. 30:656-662
SUMMARY A field experiment for the control of aphids on spinach with parathion was conducted to develop data for a complete decline curve following treatment. Data show that a tolerance of 1 ppm cannot be achieved within the seven-day withdrawal peri
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a993796290d5d03793931f51a777f245
https://doi.org/10.1111/j.1365-2621.1965.tb01820.x
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5
An Improved Method for Cleanup of Brassica for Parathion Analysis
Autor: Felix Erro, W. O. Gauer, Herman Beckman, Arthur Bevenue
Publikováno v: Journal of AOAC INTERNATIONAL. 48:1169-1173
An improved cleanup procedure has been developed for the recovery of parathion from crops, with special reference to cole crops. Parathion is separated from many chlorinated hydrocarbon pesticides that could cause interfering gas chromatographic resp
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ecc0b0ad42a6b42661a9cdd29912757f
https://doi.org/10.1093/jaoac/48.6.1169
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6
The New Florisil: A Statistical Evaluation For Chlorinated Pesticides
Autor: M B Kecskes, Abe Mittler, Arthur Bevenue, Yoshihiko Kawano, R D Smith, Kenneth Carroll, Herman Beckman, Wayne Thornburg, R I Vetro
Publikováno v: Journal of AOAC INTERNATIONAL. 50:1251-1257
A multi-laboratory study to evaluate the new Florisil PR was made with several chlorinated hydrocarbon insecticides and two representative crops. A computer program was used to analyze and compare the data between laboratories, between batches of Flo
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5c84027481b33d22c426fd3ed96b947d
https://doi.org/10.1093/jaoac/50.6.1251
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7
A Polarographic Method for Bromide Residue Determination
Autor: Herman Beckman, Paul T. Allen, Donald G. Crosby, Charles Mourer, W. O. Gauer
Publikováno v: Journal of Food Science. 32:595-598
SUMMARY— A polarographic analytical procedure has been developed to give specific and quantitative responses based on the bromide content of food crops and other media. Improved extraction, ashing and oxidizing systems are used to improve recovery
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cb1f6fa86034d4a625d1e228217f0c26
https://doi.org/10.1111/j.1365-2621.1967.tb00841.x
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