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Significance of aqueous cation composition on heavy metal mobility in a natural clay
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ABSTRACT: Heavy metal mobility in soils is influenced by various soil variables and environmental factors, including the composition of the soil-aqueous phase. This study used the sequential extraction technique to study how major cations could affect heavy metal sorption and speciation in a natural clay. The sorption of Zn, Pb, and Cd by the soil in the presence of Na^sup +^ and Ca^sup 2+^ and the resulting metal speciation in the sorbed phases were examined. Sorption experiments were perfor...
Related newspaper, magazine, and journal articles from HighBeam Research
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Heavy metal is worse than the black type
New Straits Times
; ... Metal, Trash Metal and Black Tooth comes to mind. Hardly a day passed in the last few weeks that such names did not appear in the news. To most, however, heavy metal is nothing more than a brand of loud music. One heavy metal website in fact declares: "Heavy Metal ...
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What's a 'heavy metal'? It depends whom you ask. (plastic colorants)
Plastics Technology
; When processors or their customers ask colorant suppliers to make mine heavy-metal free, the result is likely to be confusion on both sides. No one, you see, is quite sure what the expression means (see PT, Nov. '92, p. 78). Depending on whom you speak to, the definition of a heavy metal can be as
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Recovering heavy metals. (includes related article)
Mechanical Engineering-CIME
; Environmental restrictions placed on heavy metals are driving the design of systems to recover these materials for reuse or safe disposal. Equipment and processes to recover the metals are continually under development. Heavy metals are essential in the manufacture of such products as automotive
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Significance of aqueous cation composition on heavy metal mobility in a natural clay
Water Environment Research
; ABSTRACT: Heavy metal mobility in soils is influenced by various soil variables and environmental factors, including the composition of the soil-aqueous phase. This study used the sequential extraction technique to study how major cations could affect heavy metal sorption and speciation in a
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Heavy Metal Concentration in the Urban Environment of Addis Ababa, Ethiopia
Soil & Sediment Contamination
; This work assesses the issue of whether the measured concentrations of heavy metals in soil, rucks, surface and ground waters in Addis Ababa can he related to anthropogenic contamination or natural weathering of rocks. Heavy metal analyses of rocks, soils, streams, springs and boreholes have been
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The Comparison of Three Cyprinid Species in Terms of Heavy Metals Accumulation in Some Tissues
Water Environment Research
; ABSTRACT: In this study, three cyprinids species (Acanthobrama marmid, Cyprinus carpio, and Chondrostoma regium) from Keban Dam Lake, Elazig, Turkey, were compared in terms of the levels of iron (Fe), manganese (Mn), copper (Cu), zinc (Zn), chromium (Cr), cobalt (Co), cadmium (Cd), and lead (Pb) in
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The Distribution of Heavy Metals in Urban Street Dusts of Karak City, Jordan
Soil & Sediment Contamination
; Street dust samples from urban and suburban areas were collected from the city of Karak, Jordan, during the summer season of 2004. Samples were analyzed for their heavy metal concentrations (Pb, Cu, Zn, Ni, Fe, Cr, Cd, and Mn). The results showed that all heavy metals are higher in city urban areas
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Soil nematode responses to year-to-year variation of low levels of heavy metals.
Australian Journal of Soil Research
; Abstract The composition of the nematode assemblage in pasture plots that received sewage sludge amended with 4 rates of Cu, Ni, or Zn was assessed in 5 years; the highest rate of application of each metal was near the New Zealand regulatory limit. The activity of heavy metals in soil solution was
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ACCUMULATION OF SOME HEAVY METALS IN LICHENS IN GIRESUN CITY, TURKEY
Ekológia
; Abstract Kinalioglu K., Horuz A., Kutbay H.G., Bilgin A., Yalin E.: Accumulation of some heavy metals in lichens in Giresun City, Turkey. Ekolgia (Bratislava), Vol. 25, No. 3, p. 306-313, 2006. Biomonitoring properties of some foliose and crustose lichen species were studied in a polluted area of
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Ayurvedic herbal medicines and heavy metals.(Clinical report)
Bandolier
; Bandolier just loves it when someone says that while alternative therapies may not have much evidence behind them, at least they do no harm. If only. Bandolier 104 reported that many herbal remedies work because they are adulterated with all sorts of drugs of low and high concentrations, and
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