Zobrazeno 1 - 9 of 9 pro vyhledávání: '"Herbert F Righter"'
1
Identification of incurred sulfonamide residues in eggs: methods for confirmation by liquid chromatography–tandem mass spectrometry and quantitation by liquid chromatography with ultraviolet detection
Autor: Lynda V. Podhorniak, Herbert F. Righter, Maureen A. Ngoh, Daniel J. Donoghue, David N. Heller, Michael H. Thomas
Publikováno v: Journal of Chromatography B. 774:39-52
Two complementary methods for identifying and measuring sulfonamide residues in eggs were developed for use in surveying eggs for potential drug residues. The first method uses liquid chromatography–tandem mass spectrometry (LC–MS–MS) to confir
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4c3f0de43e12bac82541ecc0b1405c6b
https://doi.org/10.1016/s1570-0232(02)00187-3
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2
Confirmation of gentamicin and neomycin in milk by weak cation-exchange extraction and electrospray ionization/ion trap tandem mass spectrometry
Autor: Susan B. Clark, Herbert F. Righter, David N. Heller
Publikováno v: Journal of Mass Spectrometry. 35:39-49
A new procedure for the confirmation of two aminoglycoside antibiotics in milk was developed and validated. This work is among the early applications of ion trap mass spectrometry for regulatory methodology, and it incorporates a novel weak cation-ex
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8054f39bb86f7d67b0ee2b309256008c
https://doi.org/10.1002/(sici)1096-9888(200001)35:1<39::aid-jms911>3.0.co
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3
Comparison of Liquid Chromatography with Microbial Inhibition Assay for Determination of Incurred Amoxicillin and Ampicillin Residues in Milk
Autor: Catharina Y. W. Ang, Herbert F. Righter, Veronica L. Call, Wenhong Luo
Publikováno v: Journal of Agricultural and Food Chemistry. 45:4351-4356
A comparison was made between liquid chromatography (LC) methods and a microbial inhibition (MI) method (Bacillus stearothermophilus disk assay) for the determination of amoxicillin and ampicillin residues in milk from cows dosed with the drugs. One
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::33005712414afbd7e40ee412827920f4
https://doi.org/10.1021/jf970307q
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4
Gas Chromatographic Determination of Incurred Dimetridazole Residues in Swine Tissues
Autor: David R. Newkirk, Charlie J Barnes, Frank J Schenck, Herbert F Righter, Joseph L Okrasinski
Publikováno v: Journal of AOAC INTERNATIONAL. 73:702-704
A gas chromatographic method for determination of 2-hydroxymethyl- 1-methyl-5-nltrolmldazole (DMZOH), the hydroxy metabolite of dimetridazole, in swine muscle has been developed. The method uses cleanup steps similar to those of an earlier polarograp
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0c914799cc68c1b785ab822f43ed541b
https://doi.org/10.1093/jaoac/73.5.702
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5
Excretion of Hydroxylated Polychlorinated Biphenyl Metabolites in Cows’ Milk
Autor: John A. G. Roach, Albert M Gardner, Herbert F. Righter
Publikováno v: Journal of AOAC INTERNATIONAL. 59:273-277
Four lactating Holstein cows were each given a single oral dose of either 0,5 g 2,5,2′,5′-tetrachlorobiphenyl, 0.5 g 2,5,2′,4′,5′-pentachlorobiphenyl, 1.5 g Aroclor 1242, or 1.5 g Aroclor 1254 in gelatin capsules. Milk samples were collecte
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::af885f5d5ce3092f6963559ca56229ce
https://doi.org/10.1093/jaoac/59.2.273
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6
Subacute digoxin toxicosis in the beagle dog
Autor: S.P. Bishop, Herbert F. Righter, D.K. Detweiler, Richard H. Teske
Publikováno v: Toxicology and Applied Pharmacology. 35:283-301
Digoxin was administered iv to healthy beagle dogs at dose levels previously shown to induce sustained toxicosis and to permit survival over a 2-week period. Treatment regimens of both 5 and 7 days/week were employed. Electrocardiographic (ECG) respo
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::48a4e100b6436ccd495102bdb63636c3
https://doi.org/10.1016/0041-008x(76)90288-x
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7
Influence of age and sexual status on the development of toxic effects in the male rat fed aflatoxins
Autor: William T. Shalkop, Emory C. Leffel, Herbert F. Righter, H. Dwight Mercer
Publikováno v: Toxicology and Applied Pharmacology. 21:435-439
Male Fischer rats, 12 wk old, were fed 12 mg/kg aflatoxins in the diet. Severe reduction in feed intake and rapid weight loss were observed; mortality was 75–100% within 2 wk. Prepubertal males fed the same diet for 5 wk maintained pretreatment fee
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d4fb5fba2351e5d75be08f5951d185d3
https://doi.org/10.1016/0041-008x(72)90001-4
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9
Tissue residue depletion of sulfaquinoxaline in turkey poults
Autor: Herbert F. Righter, George D. Lakata, H. Dwight Mercer
Publikováno v: Journal of agricultural and food chemistry. 21(3)
Sulfaquinoxaline was administered in the drink- incomplete between 0 and 3 days withdrawal in ing water to turkey poults, 11-12 weeks old, at a all tissues. The most rapid depletion occurred in prophylactic (0.0175%) or therapeutic (0.1%) muscle tiss
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6bbef062f227632c79d0a78beb876da7
https://pubmed.ncbi.nlm.nih.gov/4708805
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