Zobrazeno 1 - 10
of 40
pro vyhledávání: '"Werner F. Beckert"'
Publikováno v:
Journal of AOAC INTERNATIONAL. 81:462-476
A stability study was conducted for 95 semivolatile organics listed in U.S. Environmental Protection Agency Method 8250 (this number includes 6 surrogate compounds). These compounds were spiked into solvent only [hexane-acetone (1 +1), methylene chlo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::75b72432f4e5a5744a78eed1b8b74b6d
https://doi.org/10.1093/jaoac/81.2.462
https://doi.org/10.1093/jaoac/81.2.462
Publikováno v:
Journal of High Resolution Chromatography. 20:487-492
This paper describes the extraction of 49 organophosphorus pesti-cides (OPPs) from water samples using solid-phase microextraction (SPME). Three fibers, including a 15-μm XAD-coated fiber, a 85-μm polyacrylate-coated fiber, and a 30-μm polydimethy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ef6b0fc22bc2eef9038d314de84ced2a
https://doi.org/10.1002/jhrc.1240200905
https://doi.org/10.1002/jhrc.1240200905
Publikováno v:
Journal of High Resolution Chromatography. 19:247-256
This paper describes the extraction of 20 organochlorine pesticides (OCPs) from water samples using solid-phase microextraction (SPME). Three fused-silica fibers coated or bonded with polydimethylsiloxane (PDMS) of different film thicknesses (20-, 30
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a99fa632201815c050de526887a05c10
https://doi.org/10.1002/jhrc.1240190503
https://doi.org/10.1002/jhrc.1240190503
Publikováno v:
Environmental Science & Technology. 29:2709-2712
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::92b522a37a1a9badc3a80862508af0d8
https://doi.org/10.1021/es00010a037
https://doi.org/10.1021/es00010a037
Publikováno v:
Journal of AOAC INTERNATIONAL. 78:1275-1285
A capillary gas chromatography-atomic emission detection (GC–AED) method was developed for the U.S. Environmental Protection Agency’s Environmental Monitoring Systems Laboratory in Las Vegas, NV, for determination of selected organotin compounds.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::444a2a2be564d400300b654cc06ebd9d
https://doi.org/10.1093/jaoac/78.5.1275
https://doi.org/10.1093/jaoac/78.5.1275
Publikováno v:
Journal of Chromatographic Science. 33:481-484
This study, which is part of an ongoing U.S. Environmental Protection Agency research program, carried out by the National Exposure Research Laboratory, Characterization Research Division-Las Vegas (formerly Environmental Monitoring Systems Laborator
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e5945bf98a777ed9060ddd3d16eedcb0
https://doi.org/10.1093/chromsci/33.9.481
https://doi.org/10.1093/chromsci/33.9.481
Autor:
Pauline. Ho, Janet Benedicto, Richard Young, Robert. Kim, Werner F. Beckert, Viorica Lopez-Avila
Publikováno v:
Analytical Chemistry. 67:2096-2102
This study, which is part of an ongoing U.S. Environmental Protection Agency (EPA) research program, carried out by the Environmental Monitoring Systems Laboratory-Las Vegas, addresses new sample preparation techniques that (a) prevent or minimize po
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b34957276d5b519fc40c423c50477dd0
https://doi.org/10.1021/ac00109a031
https://doi.org/10.1021/ac00109a031
Publikováno v:
Analytical Chemistry. 67:2020-2025
A novel interface to connect a capillary electrophoresis (CE) system with an inductively coupled plasma mass spectrometric (ICPMS) detector is reported here. The interface was built using a direct injection nebulizer (DIN) system. In this interface,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aea48b698c98baee829586fcbf3d46bf
https://doi.org/10.1021/ac00109a019
https://doi.org/10.1021/ac00109a019
Publikováno v:
Analytical Chemistry. 66:3788-3796
As part of an ongoing evaluation of new sample preparation methods conducted by the U.S. Environmental Protection Agency (EPA) in Las Vegas, especially those that minimize waste solvent generation, we have developed and evaluated an off-line complexa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::228371887c7625b9c3c57cca52100c1e
https://doi.org/10.1021/ac00093a040
https://doi.org/10.1021/ac00093a040
Publikováno v:
Journal of High Resolution Chromatography. 17:527-536
As part of a continuing evaluation of new analytical and sample preparation techniques conducted by the US Environmental Protection Agency (EPA), the use of capillary gas chromatography with atomic emission detection (GC-AED) for the simultaneous det
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::af5efa345ef5c3af98b33f1571f82298
https://doi.org/10.1002/jhrc.1240170705
https://doi.org/10.1002/jhrc.1240170705