Zobrazeno 1 - 10
of 11
pro vyhledávání: '"R L, Smallidge"'
Autor:
K, Albert, R L, Smallidge
Publikováno v:
Journal of AOAC International. 83(2)
In-house validation of a liquid chromatographic method for determination of sulfamethazine in swine and cattle feed was performed to verify that the method was ready for collaborative study under AOAC INTERNATIONAL guidelines. In this method, sulfame
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::880b663bcbf88af09fe153c6030441e9
https://pubmed.ncbi.nlm.nih.gov/10772161
https://pubmed.ncbi.nlm.nih.gov/10772161
Autor:
R L, Smallidge, K, Albert
Publikováno v:
Journal of AOAC International. 83(2)
A liquid chromatographic (LC) method for the analysis of sulfamethazine (SMT) in complete swine and cattle feed was collaboratively studied. The method uses post-column derivatization with dimethylaminobenzaldehyde and detection at 450 nm. To 5g fine
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::049692f981032ef82d972959845a8aa3
https://pubmed.ncbi.nlm.nih.gov/10772162
https://pubmed.ncbi.nlm.nih.gov/10772162
Autor:
R P Martin, G George, D G Portterfield, M Riva, P J Sikes, M J Cannon, Allen Fox, V A Thorpe, K E Carr, G Drewery, R W Stringham, R L Smallidge, D Lowie, W J Bliss, E J Davis, J L Leseney, A R Hanks, David W. Fink, C L Foster, P G Brignac, A A Lawrence, H.C. Fink, F A Nichols, K R Baker, P Brunsmann, W Roozen
Publikováno v:
Journal of AOAC INTERNATIONAL. 65:52-61
A spectrophotometric analytical method for the determination of arprinocid [9-(2-chloro-6-fluorophenylmethyl)- 9H-purin-6-amine] in premixes has been evaluated in an interlaboratory collaborative study. The samples were prepared in pairs over the con
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6fffbfdc405132ced722339c51989797
https://doi.org/10.1093/jaoac/65.1.52
https://doi.org/10.1093/jaoac/65.1.52
Autor:
J DeCann, David O Holst, S Lewis, G Tinsley, L Komenda, J J Psotka, C J Cashman, R L Smallidge, J R Rigler, D M Salah, R Vick
Publikováno v:
Journal of AOAC INTERNATIONAL. 65:265-269
A commercially available ceramic fiber has been tested collaboratively for replacement of asbestos as a filter aid. Eleven laboratories participated, using 10 samples with crude fiber content from 1 to 40%, one sample high in starch, and 2 samples hi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::73a69fe23e9a9d1b61092829b6143906
https://doi.org/10.1093/jaoac/65.2.265
https://doi.org/10.1093/jaoac/65.2.265
Publikováno v:
Journal - Association of Official Analytical Chemists. 65(4)
Sulfonamide drugs are extracted from feed and feed premixes by shaking with 0.15N HCl in 25% methanol. The extract is diluted, clarified, and chromatographed on a reverse phase C18 column. Mobile phases used are methanol-2% acetic acid (35 + 65) and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::06db6c9c4edf2c3e8663f21c00278d5e
https://pubmed.ncbi.nlm.nih.gov/7118788
https://pubmed.ncbi.nlm.nih.gov/7118788
Autor:
L S, Cottingham, R L, Smallidge
Publikováno v:
Journal - Association of Official Analytical Chemists. 71(5)
A sample portion is hydrolyzed with 6N HCl for 23 h and cooled, the pH is adjusted to 7.7 with NaOH, and the solution is diluted with pH 7.7 borate buffer. An aliquot of the sample extract is derivatized with 9-fluorenylmethyl chloroformate (9-FMC).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::77dd49e69192c9866920415909ef63e0
https://pubmed.ncbi.nlm.nih.gov/3148608
https://pubmed.ncbi.nlm.nih.gov/3148608
Publikováno v:
Journal - Association of Official Analytical Chemists. 71(2)
Amprolium is extracted with methanol-water (2 + 1) containing 5mM dioctylsulfosuccinate (DOSS) and 10mM CaCl2. The analyte is separated from coextracted materials by isocratic ion-pair reverse-phase liquid chromatography, following removal of late-el
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::b3359ee08c7f824ff303f81e086251ea
https://pubmed.ncbi.nlm.nih.gov/3384778
https://pubmed.ncbi.nlm.nih.gov/3384778
Autor:
R L, Smallidge
Publikováno v:
Journal - Association of Official Analytical Chemists. 61(3)
A gas-liquid chromatographic method is presented for determining ethopabate in 0.8 and 8.0% premixes. A sample is extracted with tetrahydrofuran containing an internal standard, by sonication or overnight soaking. The extract is clarified by centrifu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::28fab990392355c13de8576dcae07c4b
https://pubmed.ncbi.nlm.nih.gov/649547
https://pubmed.ncbi.nlm.nih.gov/649547
Autor:
R L, Smallidge, E J, Kentzer, K R, Stringham, E H, Kim, C, Lehe, R W, Stringham, E C, Mundell
Publikováno v:
Journal - Association of Official Analytical Chemists. 71(4)
Twenty g sample, to which sulfamerazine has been added as internal standard, is extracted with 0.3N HCl + 1.5% diethylamine in 25% methanol. The sample extract is chilled (to aid clarification), centrifuged, and filtered. The sulfonamides are separat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::e7332e0b5c894930b91c3503d8cd8cd4
https://pubmed.ncbi.nlm.nih.gov/3417586
https://pubmed.ncbi.nlm.nih.gov/3417586
Autor:
R L, Smallidge
Publikováno v:
Journal - Association of Official Analytical Chemists. 68(5)
A liquid chromatographic (LC) method for determining furazolidone in finished feeds and premixes was collaboratively studied. Finished feed sample is extracted with acetone-water (93 + 7) on a Goldfisch apparatus, extracting solvent is removed, and t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::581ca604af6feac3088874a0dee7ea9a
https://pubmed.ncbi.nlm.nih.gov/4055621
https://pubmed.ncbi.nlm.nih.gov/4055621