Topic
Trace metal
About: Trace metal is a research topic. Over the lifetime, 5125 publications have been published within this topic receiving 181046 citations.
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Enel1
TL;DR: Chitoplex (cross-linked N-carboxymethyl chitosan) is particularly effective in removing trace metal ions from brines (50 g/liter), carrier-free radioisotopes such as cobalt-60 from nuclear effluents, and toxic contaminants such as lead and cadmium (0·01 mg/liter) from drinking waters as discussed by the authors.
96 citations
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TL;DR: Levels of trace elements in Caspian fishes were relatively low in comparison to those of other regions, but Zn and Hg levels in some specimens exceeded the guideline values for food.
96 citations
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TL;DR: In this article, the elemental composition (P, Si, Al, V, Cr, Mn, Fe, Co, Ni, Cu, and Zn) in the size-fractionated plankton and suspended particulate matter (SPM) was reported.
Abstract: We report the elemental composition (P, Si, Al, V, Cr, Mn, Fe, Co, Ni, Cu, and Zn) in the size-fractionated plankton and suspended particulate matter (SPM) in the surface waters of the South China Sea. The sizefractionated plankton were effectively and gently separated by gravity through a novel trace-metal–clean filtration device, equipped with 150-, 60-, and 10-mm aperture nets in sequence to concentrate the plankton. P-normalized metal quotas in the largest fraction, mostly composed of copepods, were close to or slightly lower than the average metal quotas obtained from previous field studies. However, the total metal quotas in the two smaller fractions were 8- to 40-fold higher than the largest one, and they increased with decreasing sizes. The striking correlation between some essential metals and chlorophyll (Chl) in the SPM at the offshore site indicates that the majority of the metals were associated with algae. Nevertheless, the P-normalized metal quotas also showed positive correlations with abiogenic Al and Mn, indicating that most of the metals associated with phytoplankton were from extracellular inorganic particles. Preliminary evidence suggests that the extracellular metals were originally derived from anthropogenic aerosols, which contain abundant dissolvable trace metals. The metal quotas of the zooplankton assemblages have a fairly consistent value as compared to observations from other regions, but algae larger than 10 mm carry overwhelming amounts of extracellular metals even in offshore areas. The stoichiometry concept for trace-metal composition in marine plankton assemblages is unrealistic in the field.
96 citations
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TL;DR: Deployment of a combined probe in marine sediment revealed simultaneous remobilisation of metals and sulfide at the same location andSolubility calculations indicated that some precipitation of amorphous FeS was probably occurring at the maxima in sulfide concentrations.
96 citations
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TL;DR: Metal concentrations had substantial interspecific variation with Great Tits showing higher levels of Hg, Cr, Ni, and Mn than Greenfinches in tissues of most body parts.
96 citations