Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Richard H Albert"'
Autor:
William Horwitz, Richard H Albert
Publikováno v:
Journal of AOAC INTERNATIONAL. 89:1095-1109
The Horwitz ratio (HorRat) is a normalized performance parameter indicating the acceptability of methods of analysis with respect to among-laboratory precision (reproducibility). It is the ratio of the observed relative standard deviation among labor
Publikováno v:
Journal of AOAC INTERNATIONAL. 80:622-632
Analytical methods are needed to determine the presence of color additives in fish. We report a liquid chromatographic (LC) method developed to identify the synthetic form of the color additive astaxanthin in salmon, based on differences in the relat
Autor:
William Horwitz, Richard H Albert
Publikováno v:
Journal of AOAC INTERNATIONAL. 79:589-621
Precision performance parameters from results of 34 interlaboratory performance studies of polychlorinated aromatic ring compounds (biphenyls, dioxins, and furans) (PCCs) have been recalculated by using the International Union of Pure and Applied Che
Autor:
Ronald R Roy, Patrick Wilson, Richard H Albert, Rodney L Bong, James I Roberts, Norma J Yess, Terry J. Hoffmann, Ronald R Laski, Byron O Bohannon
Publikováno v:
Journal of AOAC INTERNATIONAL. 78:930-940
In 1992–1993, the U.S. Food and Drug Administration (FDA) conducted a statistically based study of pesticide residues in domestic and imported pears and tomatoes. For pears, 710 domestic and 949 imported samples were collected and analyzed; 79% of
Autor:
Milan Cerney, Richard H Albert, Brian D Ripley, Jerry Picard, Larry Lane, Alan R C Hill, Henry B Chin, Stephen G Capar, Harvey K Hundley, Keith A McCully
Publikováno v:
Journal of AOAC INTERNATIONAL. 78:210-213
Autor:
William Horwitz, Richard H Albert
Publikováno v:
Fresenius' Journal of Analytical Chemistry. 351:507-513
Over the years the authors have developed an empirical formula for the relative standard deviation among laboratories (RSDR, %) as a function of concentration C, expressed as a decimal fraction: RSDR=2(1−0.5log C)≈2C(−0.1505). This formula pred
Publikováno v:
Journal of AOAC INTERNATIONAL. 77:1512-1521
An AOAC/IUPAC collaborative study was conducted to evaluate the effectiveness of a multifunctional column for the determination of aflatoxins. The test portion is extracted with acetonitrile–water (9 + 1), the extract is filtered, and the filtrate
Autor:
Henry B Chin, Richard H Albert, Brian D Ripley, Alan R C Hill, Ronald F. Cook, Stephen G Capar, Keith A McCully, Larry G Lane, Harvey K Hundley
Publikováno v:
Journal of AOAC INTERNATIONAL. 77:221-224
Autor:
Paul E Corneliussen, Henry B Chin, Kenneth W Boyer, Ronald F. Cook, Harvey K Hundley, W George Fong, Keith A Mccully, Richard H Albert, Brian D Ripley
Publikováno v:
Journal of AOAC INTERNATIONAL. 76:186-189
Publikováno v:
Journal of AOAC INTERNATIONAL. 74:857-861
The homogeneity of test substances in a carrier (animal feed) is a critical factor In conducting long-term feeding studies in laboratory animals. A method for determining the adequate amount of mixing to achieve homogeneity by a mixer of the type des