Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Koos J. Kroon"'
Autor:
A.C. Fischer, Hein J W de Baar, Koos J. Kroon, Anita G. J. Buma, Bert Wolterbeek, Micha J. A. Rijkenberg, Loes J. A. Gerringa, Klaas R. Timmermans
Publikováno v:
Marine Chemistry, 109(1-2), 29-44. ELSEVIER SCIENCE BV
Short term (2 days) laboratory experiments were performed to study the change in irradiance induced production of Fe(II) in seawater in the presence of two open oceanic Southern Ocean diatom species, Thalassiosira sp. and Chaetoceros brevis. Three ir
Publikováno v:
International Journal of Environmental Analytical Chemistry. 83:127-134
The following parameters influencing the extraction efficiency of adsorbed arsenic (arsenate) from IAEA-SOIL-5 were investigated: (a) sonication or shaking time and temperature and (b) extractant type (MgCl 2 or NaH 2 PO 4 solution), concentration an
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 249:349-353
Solid-phase extraction (SPE) cartridges with different functional groups(chelating, ion-exchange, hydrophobic) may be useful for copper speciationdeterminations of aqueous samples. Provided that each cartridge selectivelyextracts one species or a gro
Publikováno v:
Chemosphere. 36:1787-1798
The mushroom Agaricus bisporus was cultivated under controlled conditions to follow the simultaneous uptake of selenium and cesium from a mycelium-incubated substrate containing appropriate radiotracers (75Se, 134Cs). Cesium was chosen as a non-compl
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry Articles. 194:319-329
Two methods are presented for a fast, accurate and precise determination of210Pb in industrial samples with a calcium-phosphate and-sulphate matrix. One method combinessolid-liquid extraction on a Pb-selective column “Sr*Spec” (Eichrom) with gamm
Publikováno v:
Fresenius' Journal of Analytical Chemistry. 352:214-218
A quality control programme is presented for the determination of 210Po in samples from the phosphate ore-processing industry. Accuracy and precision of selected steps of the analytical procedure are quantified and the change in these parameters is m
Publikováno v:
Talanta. 75(1)
Isotopic exchange based approaches have for many years been applied in soil and solute research. However, acquiring and elaboration of experimental data were not always straightforward and complete. A strict and correct use of combined isotopic excha