Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Sonja Riediker"'
Autor:
Marc J.-F. Suter, Alfredo C. Alder, Michael Berg, Christa S. McArdell, Sonja Riediker, Walter Giger
Publikováno v:
CHIMIA, Vol 51, Iss 12 (1997)
Environmental chemists performing monitoring or process-oriented fate and behavior studies on organic micropollutants face the challenge of having to determine low concentrations of problem compounds in complex mixtures and difficult matrices, such a
Externí odkaz:
https://doaj.org/article/04ec7ad3f00d45e9a169a30b3dca412d
Publikováno v:
Journal of Agricultural and Food Chemistry. 52:4625-4631
An improved sample preparation (extraction and cleanup) is presented that enables the quantification of low levels of acrylamide in difficult matrixes, including soluble chocolate powder, cocoa, coffee, and coffee surrogate. Final analysis is done by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c6ecc809a2d0cff8ab37524812e075be
https://doi.org/10.1021/jf0498362
https://doi.org/10.1021/jf0498362
Autor:
Sonja Riediker, Richard H. Stadler
Publikováno v:
Journal of Chromatography A. 1020:121-130
A confirmatory method for the determination of low levels of acrylamide in different food products is presented. The method entails extraction of acrylamide with water, precipitation of matrix constituents with acetonitrile, and two clean-up steps co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::321f6f40e84790d3054224a9aca22f83
https://doi.org/10.1016/s0021-9673(03)00876-8
https://doi.org/10.1016/s0021-9673(03)00876-8
Autor:
Natalia Varga, Sonja Riediker, Benoît Schilter, Ludovica Verzegnassi, Alfred Studer, Martin Grigorov, Richard H. Stadler
Publikováno v:
Chemical Research in Toxicology. 16:1242-1250
The thermal degradation over temperature and time of selected amino acids (Asp, Gln, and Glu) in the presence of reducing sugars was investigated in low moisture model systems. Copyrolysis of glucose-Asp mixtures led to the release of acrylic acid, a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1bccb142396c54fb7b2a4702e535a2aa
https://doi.org/10.1021/tx034088g
https://doi.org/10.1021/tx034088g
Publikováno v:
Journal of Chromatography A. 966:15-23
A sensitive and selective method is presented for the simultaneous analysis of the pesticides chlormequat and mepiquat at trace levels in tomato, pear, and wheat flour. The method entails direct injection of the food extract onto an on-line solid-pha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::db5793d898948023a0fe1e79bd9c12de
https://doi.org/10.1016/s0021-9673(02)00737-9
https://doi.org/10.1016/s0021-9673(02)00737-9
Autor:
Richard H. Stadler, Sonja Riediker
Publikováno v:
Analytical Chemistry. 73:1614-1621
A multiresidue method for the detection of five important beta-lactam antibiotics (amoxicillin, ampicillin, cloxacillin, oxacillin, penicillin G) in fresh milk is presented that allows quantitation of the analytes well below established legislative l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::803d399e550699e03a6b50b41220a4dd
https://doi.org/10.1021/ac0011383
https://doi.org/10.1021/ac0011383
p-Toluenesulfonate in Landfill Leachates: Leachability from Foundry Sands and Aerobic Biodegradation
Publikováno v:
Environmental Science & Technology. 34:2156-2161
p-Toluenesulfonate (pTS) was found at concentrations between 9.6 and 48.8 mg/L in leachates from two Swiss landfill sections where foundry wastes are stored. pTS represented ≤33% of the nonpurgable organic carbon (NPOC) in the leachates. A standard
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dd4a460d4ae2d3c433ec487173039532
https://doi.org/10.1021/es9913434
https://doi.org/10.1021/es9913434
Publikováno v:
Journal of Contaminant Hydrology. 42:253-272
A pilot landfill (area, 16 m 2 ; depth 1.5 m) containing cement-stabilized air pollution control (APC) residues from municipal solid waste incinerators (MSWI) was investigated in order to determine the hydrological and geochemical factors that contro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e76175164edd54b999b3c40d03130102
https://doi.org/10.1016/s0169-7722(99)00083-2
https://doi.org/10.1016/s0169-7722(99)00083-2
Publikováno v:
Journal of chromatography. A. 1054(1-2)
The stability of five major beta-lactam antibiotics (amoxicillin, ampicillin, cloxacillin, oxacillin, and penicillin G) in fortified milk and in milk extracts prepared for LC-ESIMS/MS analysis was studied at varying cold temperatures (4, -20, and -76
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::ed5206fb701803fdeb08be6bf0f24306
https://pubmed.ncbi.nlm.nih.gov/15553163
https://pubmed.ncbi.nlm.nih.gov/15553163
Autor:
Stéphanie Devaud, Imre Blank, Tomas Davidek, Fabien Robert, Sonja Riediker, Richard H. Stadler, Natalia Varga, Till Goldmann, Jörg Hau
Publikováno v:
Journal of agricultural and food chemistry. 52(17)
The formation of acrylamide was studied in low-moisture Maillard model systems (180 degrees C, 5 min) based on asparagine, reducing sugars, Maillard intermediates, and sugar degradation products. We show evidence that certain glycoconjugates play a m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5287239e9455acd15ce3a851bd262d37
https://pubmed.ncbi.nlm.nih.gov/15315399
https://pubmed.ncbi.nlm.nih.gov/15315399