Zobrazeno 1 - 8
of 8
pro vyhledávání: '"J L, Kacprzak"'
Autor:
J. L. Kacprzak
Publikováno v:
International Journal of Environmental Analytical Chemistry. 38:561-564
Graphite-furnace atomic absorption spectrometry for tributyltin in oysters is described. Tributyltin is extracted by n-hexane after digestion with hydrochloric acid. The 3[sgrave] detection limit for tributyltin is better than 0.01 mg Sn/kg. Typical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::99a26b8fe4dbb6096a010493dcae2ab5
https://doi.org/10.1080/03067319008026958
https://doi.org/10.1080/03067319008026958
Autor:
J, Ziaziaris, J L, Kacprzak
Publikováno v:
Journal of AOAC International. 78(3)
Samples of raw noodles in a mixture of nitric acid and hydrogen peroxide were microwave digested in sealed tetrafluoromethaxil (PTFE TFM) vessels. The digests were diluted to volume with distilled water and quantitated by inductively coupled plasma a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::e11acee988c31cccf203c57db3aa62dd
https://pubmed.ncbi.nlm.nih.gov/7756904
https://pubmed.ncbi.nlm.nih.gov/7756904
Autor:
J L, Kacprzak
Publikováno v:
Journal - Association of Official Analytical Chemists. 61(6)
A gas-liquid chromatographic (GLC) procedure with p-toluenesulfonamide (p-TS) as an internal standard is used to determine o-toluenesulfonamide (o-TS), a major impurity in artificial sweetening substances containing saccharin. Although p-TS can itsel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::730bc796a880bf17c248c48a6885a9db
https://pubmed.ncbi.nlm.nih.gov/730661
https://pubmed.ncbi.nlm.nih.gov/730661
Autor:
J L, Kacprzak, R, Chvojka
Publikováno v:
Journal - Association of Official Analytical Chemists. 59(1)
A method for the concurrent determination of methyl mercury and inorganic mercury by flameless atomic absorption spectroscopy (AAS) is described. Fifty-seven samples of juvenile black marlin fish were analyzed for inorganic and methyl mercury, and to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::c3d64ca38b949aad13e78388d8643403
https://pubmed.ncbi.nlm.nih.gov/942950
https://pubmed.ncbi.nlm.nih.gov/942950
Autor:
R, Chvojka, J L, Kacprzak
Publikováno v:
Journal - Association of Official Analytical Chemists. 62(5)
Background correction is used with a previously published flameless atomic absorption method for the concurrent determination of inorganic and methyl mercury. The use of background correction simplifies the procedure, but, more importantly, eliminate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::7d5be4d4a670275d49c1fed5797399a1
https://pubmed.ncbi.nlm.nih.gov/528468
https://pubmed.ncbi.nlm.nih.gov/528468
Publikováno v:
Journal - Association of Official Analytical Chemists. 67(1)
A method is described for determining naphthalene in bran and wheat germ products. The method involves distilling the naphthalene from a water-cereal mixture and then extracting the distillate with hexane. A 10 microL aliquot of the hexane extract is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::5adfa2aa9d84df6dc5d62d235e112e62
https://pubmed.ncbi.nlm.nih.gov/6321427
https://pubmed.ncbi.nlm.nih.gov/6321427
Autor:
J L, Kacprzak
Publikováno v:
Journal - Association of Official Analytical Chemists. 60(5)
A method is described for determining dimethylpolysiloxane in instant coffee. The siloxane is extracted with chloroform in a Soxhlet apparatus and then converted to silica which is estimated by a heteropoly blue method. The method is interference-fre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::50b272476e208ae85242757b483a4eb1
https://pubmed.ncbi.nlm.nih.gov/893333
https://pubmed.ncbi.nlm.nih.gov/893333
Autor:
Kacprzak, J. L.
Publikováno v:
International Journal of Environmental Analytical Chemistry; Apr1990, Vol. 38 Issue 4, p561-564, 4p