Published in Environmental Geology
Sampling, storage and analytical techniques are described for a pilot study on Antarctic freshwaters. The study was aimed at assessing the level of inorganic (mostly trace metals), anthropogenic contamination in freshwater lake systems in a relatively densely populated area of Antarctica. Among the different types of material tested for sample stor...
Published in Digestion
Body iron homeostasis is maintained by the regulation of iron absorption in the first portion of the small intestine. Previous studies have shown that some trace metal cations may have an inhibitory effect on inorganic iron absorption. In view of the possible nutritional and toxicological implications of this inhibition, we decided to study the eff...
Published in Environmental Geology
Sediments from stormdrain catchments and outlets in Wellington city and sediment traps from Wellington Harbour were sampled for trace metal content. Samples were analysed for total metal content using XRF and ICP-MS. High values of Pb and Zn were found in stormdrain catchments and outlets, decreasing to elevated background rock levels in the harbou...
Published in Environmental Geochemistry and Health
The present project aims to investigate the possible contamination of teas with the trace metals: Al, Cu and Zn. Tea bushes sampled from two tea plantations in the northern part of Guangdong Province accumulated higher concentrations of Cu and Zn in young leaves, and of Al in old leaves. The analysis of the three metals in tea produced in different...
Published in Wetlands
Wetlands systems generally are considered as filters, retaining allochthonous metals that can have toxic effects on biota. We investigated patterns of spatial variability in trace metal concentrations in sediments and tissues ofPhragmites australis in the marshes of the Danube Delta, Romania in 1993 and 1994. Mean concentrations (±s.e) of Ni, Cr, a...
This paper, based on laboratory experiments, deals with the behaviour of metallic species Cu, Cd, Fe, Zn and Mn during the mixing of river and seawaters. The present study focused on the variations of metals speciation in both the dissolved phase and the suspended particulate matter. For the dissolved metals, a protocol using chelating resins permi...
Management of domestic wastes often relies on incineration, a process that eliminates large amount of wastes but also produces toxic residues that concentrate heavy metals. Those hazardous secondary wastes require specific treatment. Vitrification is seen as a powerful way to stabilise them. However, concern exists about the long term behaviour of ...
Published in Biological Trace Element Research
Zinc (Zn) is recognized as an essential nutrient, and is added as a supplement to animal and human diets. There are claims that zinc methionine (ZnMet) forms a stable complex that is preferentially transported into tissues, and this has contributed to uncertainty about conflicting reports on the bioavailability of various Zn compounds. This study e...
Published in Analytica Chimica Acta
A novel, simple and inexpensive method for preparation of solid working electrodes from conducting refractory powder materials at room temperature in ambient atmosphere has been developed for electroanalytical purposes. The method is based on the use of a demountable device for hand pressing of the powder mixed with a polymer solution. During the p...
Published in Analytica Chimica Acta
Comprehensive studies have been carried out on the extraction behaviour of thorium matrix vis-a-vis 17 trace metallic elements using a novel extractant viz. Cyanex-923. The near total extraction of thorium and quantitative separation of these metals has been established using inductively coupled argon plasma–atomic emission spectrometry (ICP–AES). ...
