Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Nancy M Hepp"'
Autor:
Nancy M Hepp
Publikováno v:
Journal of AOAC INTERNATIONAL. 103:1264-1267
Background Color additives requiring batch certification by the U.S. Food and Drug Administration have Code of Federal Regulations (CFR) specification limits for certain elements and are usually analyzed by x-ray fluorescence spectrometry (XRF). Howe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::99298a00f9380dd6750030e1247bd4df
https://doi.org/10.1093/jaoacint/qsaa025
https://doi.org/10.1093/jaoacint/qsaa025
Publikováno v:
Journal of AOAC International. 105(1)
Background Color additives requiring batch certification by the U.S. Food and Drug Administration have Code of Federal Regulations (CFR) specification limits for certain elements and are usually analyzed by X-ray fluorescence spectrometry (XRF). Howe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::317b6a57159100cd5cd4a09896bf1d06
https://pubmed.ncbi.nlm.nih.gov/34542627
https://pubmed.ncbi.nlm.nih.gov/34542627
Autor:
Nancy M Hepp, India C. James
Publikováno v:
X-Ray Spectrometry. 45:330-338
Advances in x-ray fluorescence (XRF) using high-energy polarized energy-dispersive (ED)XRF spectrometry (PEDXRF) were applied to the determination of trace As, Hg, and Pb in various color additives subject to batch certification by the U.S. Food and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8f8585b42794b33f0019fe02fd3ce046
https://doi.org/10.1002/xrs.2709
https://doi.org/10.1002/xrs.2709
This chapter reviews regulatory policies on the use of colouring agents in cosmetic products and also both the rationale and the specific methods for analyzing such agents. Regulations of various countries are presented, with an emphasis on the requi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8fa771152312015d71bf2963c8e887fc
https://doi.org/10.1016/b978-0-444-63508-2.00007-2
https://doi.org/10.1016/b978-0-444-63508-2.00007-2
Autor:
Gerardo Alvarez-Rivera, Carlos Bendicho, Juan L. Benedé, Diana M. Bowman, Miguel A. Bratos, Noelia Cabaleiro, Alberto Chisvert, Octavio Díez-Sales, Stefano Dorato, José M. Eiros, María Fernández-Amado, Carmen Garcia–Jares, Maria C. Garcia-Loygorri, Dimosthenis Giokas, Eliseo F. González Abellán, Nancy M. Hepp, Kurunthachalam Kannan, Rajendiran Karthikraj, Isela Lavilla, Maria Llompart, Purificación López-Mahía, Marina López-Nogueroles, Marta Lores, Gabriel A. March, Juan G. March, Desirée Martínez Pérez, Nathaniel D. May, Andrew D. Maynard, Virginia Merino, Matilde Merino, Gerd Mildau, Stanley R. Milstein, Pablo Miralles, Soledad Muniategui-Lorenzo, Amparo Nácher, Raúl Ortiz de Lejarazu, Darío Prada-Rodríguez, M. Carmen Prieto-Blanco, Amparo Salvador, Alan L. Scher, Carla Villa, Adrian Weisz
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c6d4e783abc0f929bdc40c1ffc41e5cc
https://doi.org/10.1016/b978-0-444-63508-2.01002-x
https://doi.org/10.1016/b978-0-444-63508-2.01002-x
Autor:
Nancy M Hepp
Publikováno v:
Journal of AOAC International. 98(1)
Specifications in the Code of Federal Regulationslimit the levels of As, Pb, and Hg in most certifiable color additives, and some have additional specification limits for Cr and Mn. A new ICP/MS method wasdeveloped and validated for the quantitative
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d13e73e3d6af5318aff18c4f4831a6dc
https://pubmed.ncbi.nlm.nih.gov/25857892
https://pubmed.ncbi.nlm.nih.gov/25857892
Publikováno v:
Journal of cosmetic science. 65(3)
As part of efforts to assess amounts of inorganic element contamination in cosmetics, the U.S. Food and Drug Administration contracted a private laboratory to determine the total content of seven potentially toxic or allergenic elements in 150 cosmet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::307b3792384ca7678f9ac20a1d93f1d9
https://pubmed.ncbi.nlm.nih.gov/25043485
https://pubmed.ncbi.nlm.nih.gov/25043485
Publikováno v:
Journal of AOAC INTERNATIONAL. 84:117-122
A procedure using an automated microwave flow digestion technique was developed and validated for the digestion of samples of certifiable color additives before mercury determination by cold vapor atomic absorption spectrometry. Recovery studies were
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::abdc13acb6f817ec424371bf934c02a6
https://doi.org/10.1093/jaoac/84.1.117
https://doi.org/10.1093/jaoac/84.1.117
Autor:
Nancy M Hepp
Publikováno v:
Journal of AOAC INTERNATIONAL. 82:327-330
The preparations of digested samples of certifiable color additives by dry ashing and wet digestion for arsenic analysis by hydride generation atomic absorption spectrometry (AAS) were compared. The dry ashing technique was based on the preparation u
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e5d9144acf5702615cd9f4e999ae5d76
https://doi.org/10.1093/jaoac/82.2.327
https://doi.org/10.1093/jaoac/82.2.327
Autor:
Nancy M Hepp
Publikováno v:
Journal of AOAC INTERNATIONAL. 81:89-92
An X-ray fluorescence (XRF) method was developed for determining manganese in FD&C Blue No. 1 from simply prepared pressed pellets. Results were compared with those of atomic absorption spectroscopy (AAS) of acid-digested or ashed samples. Levels of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9a5c895bce0100f3de0897125a5fbc2d
https://doi.org/10.1093/jaoac/81.1.89
https://doi.org/10.1093/jaoac/81.1.89