Zobrazeno 1 - 10 of 21 pro vyhledávání: '"John F. Uthe"'
1
Dichloromyristic Acid, a Major Component of Organochlorine Load in Lobster Digestive Gland
Autor: Jonathan M. Curtis, John F. Uthe, Charles J. Musial, Joyce E. Milley, Robert K. Boyd
Publikováno v: Environmental Science & Technology. 31:535-541
It is well established that PCBs and chlorinated pesticides account for only some 15% of extractable organically-bound chlorine (EOCl) in samples from marine and non-marine environments. Work by other investigators on marine sediments and lipids from
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::48a15807c2338c8b28ed89b73f691d9a
https://doi.org/10.1021/es960407x
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2
Estimating Analytical Variances in Measurement of Polycyclic Aromatic Hydrocarbons and Application to Monitoring Contaminants in American Lobster (Homarus americanus)
Autor: Rajendra K Misra, John F. Uthe, Thomas L. King, Charles J. Musial
Publikováno v: Journal of AOAC INTERNATIONAL. 79:797-802
A method is presented for estimating replicate polycyclic aromatic hydrocarbon (PAH) concentrations in American lobster (Homarus americanus) digestive gland tissue based on recoveries of added perdeuterated surrogates from a single satisfactory analy
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::506eb2b9f502749539ee33e61d0f0fbd
https://doi.org/10.1093/jaoac/79.3.797
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3
Determination of Free and Bound Cd, Zn, Cu, and Ag Ions in Lobster (Homarus americanus) Digestive Gland Extracts by Gel Chromatography Followed by Atomic Absorption Spectrophotometry and Polarography
Autor: Chiu L Chou, Robert D. Guy, John F. Uthe
Publikováno v: Journal of AOAC INTERNATIONAL. 76:794-798
Gel-permeation chromatography followed by atomic absorption spectrophotometric and polarographic analyses were used to measure free and bound divalent metal ions in lobster digestive gland extracts prepared with or without oc-toluenesulfonyl fluoride
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6f5dda5ff8edc6a7cf60f01cc92fee09
https://doi.org/10.1093/jaoac/76.4.794
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4
Trend analysis using a multivariate procedure for data with unequal residual covariance and regression coefficient matrices: Application to Canadian Atlantic cod contaminant data
Autor: Charles J. Musial, R. K. Misra, C. L. Chou, D. P. Scott, John F. Uthe
Publikováno v: Marine Pollution Bulletin. 26:73-77
Conventional univariate and multivariate analysis of covariance (ANCOVA and MANCOVA) are commonly used to investigate time trends in contaminant levels in fish tissues. Both procedures require that years do not differ in their residual variances, cov
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::37abbabc5f21c663d8d4ff9b1e6de947
https://doi.org/10.1016/0025-326x(93)90094-z
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7
Rapid semi-micro method for separating non-ortho chlorinated chlorobiphenyls from other chlorobiphenyls
Autor: Thomas L. King, Charles J. Musial, John F. Uthe
Publikováno v: The Analyst. 120:1917
A method for separating common non-ortho chlorinated chlorobiphenyls, namely 3,4,4′-tri-, 3,4,4′,5-, 3,3′,4,4′-tetra, 3,3′,4,4′,5-penta-, and 3,3′4,4′,5,5′-hexachlorobiphenyl (IUPAC Nos. 37, 81, 77, 126, and 169) from other chlorobi
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d4d5d1bee4c77b9730258bc367d768c1
https://doi.org/10.1039/an9952001917
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8
Multivariate analysis of a round-robin study on the measurement of chlorobiphenyls in fish oil
Autor: Charles J. Musial, R. K. Misra, John F. Uthe
Publikováno v: The Analyst. 117:1085
Participants identified and measured chlorobiphenyls (CBs) in fish oil both before and after spiking with undisclosed amounts of four CBs following two clean-up methods, a common one and their own. Complete data were received from 18 of 30 participan
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6d849a34598b747d3fa65ec70bcd8a69
https://doi.org/10.1039/an9921701085
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9
Intercomparative Study on the Determination of Polynuclear Aromatic Hydrocarbons in Marine Shellfish Tissue
Autor: Charles J. Musial, John F. Uthe
Publikováno v: Journal of AOAC INTERNATIONAL. 71:363-368
Twenty-five laboratories were sent 2 materials, one an acetone powder of lobster digestive gland, the other, the oil which had been extracted during preparation of the powder. Each laboratory was requested to measure the levels of a suite of polycycl
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::859be845930158c19930bf7a9465d614
https://doi.org/10.1093/jaoac/71.2.363
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10
Flameless Atomic Absorption Spectrophotometry of Selenium in Fish and Food Products
Autor: John F. Uthe, Harry C Freeman, Gerald T. C. Shum
Publikováno v: Journal of AOAC INTERNATIONAL. 60:1010-1014
Research report:A method of using flameless atomic absorption spectrophotometry to determine selenium in fish tissues, meat, cereals, milk powder, and other materials is described. Samples are solubilized in nitric acid and atomized in a graphite fur
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::46c5f5c23cde356321a7bfe9d5fc13fa
https://doi.org/10.1093/jaoac/60.5.1010
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