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Investigation of heavy metal mobility and availability by the BCR sequential extraction procedure: relationship between soil properties and heavy metals availability  

Posted on 4. December, 2014.

Surface soil and corn cob samples were collected from 15 different agricultural fields of Çanakkale, Turkey, and were analysed to determine the concentration of Cd, Cu, Mn, Ni, Pb and Zn. BCR sequential extraction was used to extract the binding forms of the metals in the soil samples. 

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Chemical Speciation & Bioavailability: Cumulative Index (3)

Posted on 21. November, 2012.

Below is the latest Cumulative Index for Chemical Speciation & Bioavailability.

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Detoxification of Cyanide

Posted on 20. September, 2012.

The extraction of gold and silver from minerals and concentrates with cyanide is a long established hydrometallurgy process. However, the resulting industrial effluents contain high contents of free cyanide which are highly toxic. Detoxification techniques described in the latest Chemical Speciation and Bioavailability using titanium dioxide and a hydrocyclone sparger with chlorine dioxide produce excellent results.

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Contribution of lead in soil to children's lead burden, an Update

Posted on 3. July, 2012.

US lead exposure studies, reviewed in Chemical Speciation and Bioavailability, following the removal of lead from gasoline and food indicate that children take up none or very little lead from soil. Soil removal from residences and children’s play areas is unnecessary and not cost effective. Children benefit more from cleaning of their homes. The primary vehicle by which children are now exposed to lead is house dust.

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Analyses of trace metals, peptide ligands of trace metals and mercury speciation in home prepared bread

Posted on 21. May, 2012.

How do fermentation and baking affect the structure, concentration and activity of chelating agents in home prepared bread? A study from the Czech Republic, reported in Chemical Speciation and Bioavailability, analyses alterations in the solubility and binding of trace elements that occur during the preparation of bread. Cereal grain proteins were found to be chelators of trace elements in the raw material. Some ligands of trace elements diminished during bread making, probably as the result of thermal denaturation.

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Speciation of heavy metals in the surface waters of a former tin mining catchment

Posted on 19. March, 2012.

This study was conducted to investigate the chemical speciation of dissolved and particulate elements (Pb, Zn, Cu, Cr, As and Sn) in mining wastewater.

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Chemical Speciation and Bioavailability Indexes

Posted on 21. December, 2011.

The entire Author and Article Indexes for Chemical Speciation and Bioavailability ever since its inception 23 years ago are now available. The subjects range from “Absorption of metal ions by Eichhornia crassipes”  to “Wound tissue concentration of essential elements and healing of leg ulcers in Sri Lankan patients”: in fact,  a whole world of environmental issues are covered.

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Impact of fluorides on the removal of heavy metals from an electroplating effluent using a flocculent brewer's yeast strain of Saccharomyces cerevisiae

Posted on 16. November, 2011.

Effluents from electroplating industries contain large amounts of heavy metals. These must be treated before discharge into aquatic systems to prevent serious environmental damage. The yeast Saccharomyces cerevisiae, a byproduct of fermentation industries, combines high metal accumulation with low costs. However, an article in issue 4 of Chemical Speciation and Bioavailability explains how the fluoride anions present in the effluent may preclude bioremediation of chromium(III) by yeast cells.

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The distribution and bioavailability of Cd and Zn in cultivated soil of Henan Province

Posted on 28. October, 2011.

With continuing population growth and rapid economic development of China, the environmental quality of rural soil is becoming more and more important with regard to human health. A study reported in Chemical Speciation and Bioavailability assesses the spatial changes of Cd and Zn in the surface soil in the Henan Province cultivated area.

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