Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Theresa A Gehring"'
Autor:
Theresa A. Gehring, Paul H. Siitonen, Charles Geiseker, Larry G. Rushing, Bill Griffin, Rod Williams
Publikováno v:
Journal of Chromatography B. 840:132-138
A liquid chromatographic (LC) method for determining 14 sulfonamide (SA) (sulfanilamide, sulfadiazine (SDZ), sulfathiazole, sulfapyridine, sulfamerazine (SMR), sulfamethazine (SMZ), sulfamethizole, sulfamethoxypyridazine, sulfachloropyridazine (SCP),
Autor:
Wenhong Luo, Thomas M. Heinze, Catherina Y W Ang, Lawrence J Lin, Antonia Mattia, Theresa A Gehring
Publikováno v:
Journal of AOAC INTERNATIONAL. 86:202-208
Analytical methodologies with ultrasonic extraction and liquid chromatography (LC) were developed for the determination of phenolic compounds in dietary supplements containing Echinacea. The phenolic compounds determined by these methods included caf
Publikováno v:
Rapid Communications in Mass Spectrometry. 12:1625-1634
Malachite green (MG), a traditional agent used in aquaculture, is structurally related to other carcinogenic triphenylmethane dyes. Although MG is not approved for use in aquaculture, its low cost and high efficacy make illicit use likely. We develop
Publikováno v:
Journal of AOAC INTERNATIONAL. 80:751-755
Fourteen sulfonamides—sulfanilamide, sulfadiazine, sulfathiazole, sulfapyridine, sulfam- erazine, sulfamethazine, sulfamethizole, sulfamethoxypyridazine, sulfachloropyridazine, sulfamonomethoxine, suļfadoxine, sulfamethoxazole, sulfadimethoxine, a
Autor:
Daniel R. Doerge, Harold C. Thompson, Larry G. Rushing, Theresa A. Gehring, Mona I. Churchwell, Keith M. McErlane
Publikováno v:
Journal of Agricultural and Food Chemistry. 44:3164-3169
High-performance liquid chromatography and postcolumn derivatization with fluorescamine were used to determine sulfadiazine (SDZ) residues in muscle and skin from salmon dosed with Tribrissen. Dete...
Publikováno v:
Teratology. 52:277-285
Valproic acid (VPA) is an anti-convulsant drug known to cause spina bifida in humans. Administration of the vitamin, folic acid, has been shown to decrease the recurrence and possibly also the occurrence of neural tube defects, primarily spina bifida
Publikováno v:
Journal of AOAC INTERNATIONAL. 78:1161-1164
A reversed-phase (ODS-2) liquid chromatographic method was developed to determine low nanogramper-gram levels of sulfadiazine (SDZ) in salmon muscle tissue. SDZ was extracted with acetonitrile-aqueous 2% acetic acid (pH 3.0), partitioned into methyle
Autor:
Brian G. Lake, Nigel J. Gooderham, Jason T. Taylor, Robert J. Turesky, Ricky D. Holland, Theresa A. Gehring
Publikováno v:
Chemical research in toxicology. 18(3)
Liquid chromatography electrospray ionization mass spectrometry (MS) with a triple quadrupole MS was used to identify known and novel heterocyclic aromatic amines (HAAs) in human urine. The identities of 2-amino-3,8-dimethylimidazo[4,5-f]quinoxaline
Publikováno v:
Journal of AOAC INTERNATIONAL. 78:307-309
A liquid chromatographic method was developed for determination of the essential nutrient thiamine (vitamin Bi) in rodent feed. Thiamine was extracted with hydrochloric acid, separated by reversed-phase liquid chromatography, derivatized postcolumn t
Autor:
Wenhong, Luo, Catherina Y W, Ang, Theresa A, Gehring, Thomas M, Heinze, Lawrence J, Lin, Antonia, Mattia
Publikováno v:
Journal of AOAC International. 86(2)
Analytical methodologies with ultrasonic extraction and liquid chromatography (LC) were developed for the determination of phenolic compounds in dietary supplements containing Echinacea. The phenolic compounds determined by these methods included caf