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Article
Calculation of internal dose from ingested soil-derived uranium in humans: Application of a new method
The aim of the present study was to determine the internal dose in humans after the ingestion of soil highly contaminated with uranium. Therefore, an in vitro solubility assay was performed to estimate the bio...
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Article
Manganese speciation in paired serum and CSF samples using SEC-DRC-ICP-MS and CE-ICP-DRC-MS
Occupational manganese (Mn) overexposure leads to accumulation in the brain and has been shown to cause progressive, permanent, neuro-degenerative damage with syndromes similar to idiopathic Parkinsonism. Mn i...
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Chapter and Conference Paper
Elucidating the Biogeochemical Memory of the Oceans by Means of High-Resolution Organic Structural Spectroscopy
Nontarget high-resolution organic structural spectroscopy (high-field FTICR mass spectrometry and NMR spectroscopy) of marine dissolved organic matter (DOM) isolated by means of solid-phase extraction (SPE) fr...
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Article
Enhanced extract preparation of native manganese and iron species from brain and liver tissue
To date, no reference method for the extraction of labile Mn species from biological tissues is published which provides sufficient extraction efficiency combined with monitoring speciation. Here, an extractio...
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Article
Bioavailability of zinc from NutriSet zinc tablets compared with aqueous zinc sulfate
The apparent widespread extent of zinc (Zn) deficiency in develo** countries and the efficacy of oral Zn supplements as an adjunct to oral rehydration therapy make oral Zn supplementation an increasingly imp...
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Article
Levels of Toxic Metals in Multisectoral Samples from Winam Gulf of Lake Victoria
In this study, the distribution and sources of inputs of trace metals including Cd, Cu, Zn and Pb from various sources as well as Fe which is widely used in the construction industry, into Winam Gulf of Lake V...
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Article
Identification and quantification of metallothionein isoforms and superoxide dismutase in spiked liver extracts using HPLC-ESI-MS offline coupling and HPLC-ICP-MS online coupling
A two-dimensional chromatographic method for the characterization of metallothionein isoforms (MT) and superoxide dismutase (SOD) in spiked liver extracts was developed for the optimization of extraction proc...
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Article
Effect of different extraction procedures on the yield and pattern of Se-species in bacterial samples
Investigations are described to extract Se-species from a bacterial sample. The five extraction methods investigated were: hot water, protease, lysozyme, lysozyme-protease, and HCl hydrolysis. The extraction ...
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Article
Iodine species and the endocrine system: thyroid hormone levels in adult Danio rerio and develo** Xenopus laevis
Recently a new approach for the analysis of iodinated organic species in human serum has been developed using liquid chromatography–inductively coupled plasma–mass spectrometry (LC–ICP–MS). This method enable...
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Article
Second International Conference on Trace Element Speciation in Biomedical, Nutritional and Environmental Sciences
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Chapter
Platinum speciation using on-line hyphenation of capillary electrophoresis to ICP-MS
Since the use of platinum in car catalysts, Pt is enriched in the environment (Zereini et al. 1993; Alt et al. 1993; Schramel et al. 1995; Schierl and Fruhmann 1996; Moens et al. 1995). Estimation of Pt-bioava...
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Article
First International Conference on Trace Element Speciation in Biomedical, Nutritional and Environmental Sciences
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Article
Capillary electrophoresis/electrospray ionization mass spectrometry (CE/ESI-MS) as a powerful tool for trace element speciation
The on-line coupling of capillary electrophoresis (CE) and electrospray ionization mass spectrometry (ESI-MS) for speciation analysis is entailed with a number of difficulties due to technical and methodical ...
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Article
Quality control and reference materials in speciation analysis
This contribution describes the need and some strategies for a rigid quality control in speciation analysis. Firstly, the term “chemical speciation” is defined and differentiated from experimental concepts no...
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Article
Capillary electrophoresis coupled to inductively coupled plasma mass spectrometry (CE/ICP-MS) and to electrospray ionization mass spectrometry (CE/ESI-MS): An approach for maximum species information in speciation of selenium
On-line hyphenations consisting of a separation and a detection step are one of the most efficient techniques for identification and characterization of metal containing species. The high resolution power of ...
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Chapter
Platin-Speziesanalytik mit Hilfe der on-line Kopplung von Kapillarelektrophorese und ICP-MS: Entwicklung, Vorteile und Anwendung dieser schnellen und nachweisstarken Methode
Seit Platin in Katalysatoren zur Reinigung von Automobilabgasen genutzt wird, reichert es sich in der Umwelt an (Wildhagen u. Krivan 1992; Zereini et al. 1993; Alt et al. 1993; Schramel et a1. 1995; Schierl u....
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Article
The capability of ultrafiltration and ETV-ICP-MS for size fractionation studies of arsenic and selenium species in ground water samples with high concentrations of iron, manganese and sulfur
A simple, but highly sensitive procedure for the determination of particular and colloidally bound arsenic and selenium species in ground water samples with high concentrations of iron, manganese and sulfur i...
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Article
A new method for the analysis of arsenic species in urine by using HPLC-ICP-MS
Urinary arsenic speciation is considered to be an effective procedure to differentiate between toxic inorganic and less toxic organic arsenic exposure. The aim of the present work was to develop a new method ...
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Article
Platinum speciation with hyphenated techniques: high performance liquid chromatography and capillary electrophoresis on-line coupled to an inductively coupled plasma-mass spectrometer – application to aqueous extracts from a platinum treated soil
1. An on-line hyphenation of reversed phase high-performance liquid chromatography (RP-HPLC) with inductively coupled plasma-mass spectrometry (ICP-MS) is applied, using an ultrasonic nebuliser combined with ...
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Article
Platinum determination in nutrient plants by inductively coupled plasma mass spectrometry with special respect to the hafnium oxide interference
Platinum, emitted from automobile exhaust catalysts, is mainly oxidised in a humic soil, as described previously [1]. An experiment with nutrient plants was carried out to elucidate the bioavailability and ac...
