Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Jürgen Messerschmidt"'
Autor:
Günther Weber, Jürgen Messerschmidt
Publikováno v:
Analytica Chimica Acta. 545:166-172
Adsorptive stripping voltammetry (‘formazone-method’) is already known as one of the most sensitive methods for platinum analysis with a detection limit in the low picograms range. In this work, it is shown that the detection limit can be lowered
Publikováno v:
Environmental Research. 98:83-88
Concentrations of the platinum group elements Pt, Pd, and Rh were analyzed by adsorptive cathodic stripping voltammetry (Pt, Rh) and total-reflection X-ray fluorescence (Pd) in the intestinal helminth Pomphorhynchus laevis and its host Barbus barbus.
Publikováno v:
ELECTROPHORESIS. 25:1758-1764
The binding of palladium to high-molecular-mass compounds in palladium-treated lettuce is investigated as an example for a biological matrix. The total palladium concentration in lettuce leaves is 10.3 ng/g wet weight. After homogenization, high-mole
Autor:
Johannes G. M. Burgerhof, F.Y.F.L. de Vos, A.G.J. van der Zee, Jourik A. Gietema, Janine Nuver, Jürgen Messerschmidt, E.G.E. de Vries, Pax H.B. Willemse
Publikováno v:
European Journal of Cancer. 40:696-700
Male germ cell tumour patients treated with cisplatin-based chemotherapy frequently develop cardiovascular risk factors and disease, but sparse information is available about long-term complications of this type of chemotherapy in women. We investiga
Publikováno v:
Analytica Chimica Acta. 498:93-104
In the present study, we evaluated a microwave digestion procedure followed by electrothermal atomic absorption spectrometry (ET-AAS) for the determination of the platinum group metals (PGM) Pt, Pd and Rh in small amounts of animal tissue. Due to the
Development and application of a micro-digestion device for elemental analysis of biological samples
Publikováno v:
Analytica Chimica Acta. 451:279-284
A commercially available piece of equipment for high pressure ashing was adapted for the digestion of micro-samples of biological origin by a supplementary device. This attachment is shown to be suitable for solids with a sample amount of some microg
Publikováno v:
Ecotoxicology. 11:385-392
Following the introduction of automobile catalysts in the middle of the Eighties in Germany there is an increasing emission of the platinum-group-metals (PGM) platinum (Pt), palladium (Pd) and rhodium (Rh). Still, it remains unclear if these metals a
Publikováno v:
Fresenius' Journal of Analytical Chemistry. 371:921-926
The species patterns of nutrient and trace metals (K, Ca, Mg, Mn, Fe, Zn) obtained by extraction of plant roots have been determined as a function of extraction pH in the range 4-9. The extractable metal concentrations were subdivided into low-molecu
Publikováno v:
Environmental Pollution. 113:341-345
Following the introduction of automobile catalysts in the middle of the 1980s in Germany there is an increasing emission of the platinum-group-metals platinum, palladium (Pd) and rhodium. Still, it remains unclear if these metals are bioavailable for
Autor:
Bernd Sures, F. Alt, Christoph M. Menzel, Zsolt Berner, Jörg-Detlef Eckhardt, Horst Taraschewski, Sonja Zimmermann, Jürgen Messerschmidt, Doris Stüben
Publikováno v:
Analytica Chimica Acta. 439:203-209
A study was carried out to analyse Pt trace levels in fish liver and mussel soft tissue, using two different analytical techniques. Sector field inductively coupled plasma mass spectrometry (SF-ICP-MS) combined with microwave digestion was compared w