Nemati, K. and Abu Bakar, N.K. and Sobhanzadeh, E. and Abas, M.R. (2009) A modification of the BCR sequential extraction procedure to investigate the potential mobility of copper and zinc in shrimp aquaculture sludge. Microchemical Journal, 92 (2). pp. 165-169. ISSN 0026265X , DOI https://doi.org/10.1016/j.microc.2009.03.002.
Full text not available from this repository.Abstract
The mobility, bioavailability and persistence of copper and zinc were investigated by comparing the effect of concentration and pH changes in step 2 BCR (European Community Bureau of Reference, now known as the Standards Measurements and Testing Program) sequential extraction procedure in shrimp aquaculture farm sludge from Selangor, Malaysia. The pseudototal metal contents of shrimp aquaculture sludge samples were determined following an aqua regia digestion. The metal content in the extracts was measured by flame atomic absorption spectrometry (AAS). The concentration of Zn was increased with the increase in the concentration of hydroxylammonium chloride from 0.1 M to 0.5 M, However, further increase in the concentration of reductant caused a significant reduction in released Zn. Zinc showed the highest release percentage for hydroxylammonium chloride 0.5Â M with pH 1.5 (modified BCR sequential extraction scheme). In contrast, Cu showed the highest speciation percentage in step 2 when the unmodified sequential extraction procedure was used. Copper and zinc concentrations in this sludge, however, were not higher than the typical concentrations in soil, hence the use of this sludge as a fertilizer is suitable.
| Item Type: | Article |
|---|---|
| Funders: | UNSPECIFIED |
| Uncontrolled Keywords: | BCR sequential extraction Copper Potential mobility Shrimp aquaculture Zinc |
| Subjects: | Q Science > QD Chemistry |
| Divisions: | Faculty of Science > Department of Chemistry |
| Depositing User: | miss munirah saadom |
| Date Deposited: | 02 Jul 2013 01:36 |
| Last Modified: | 02 Jul 2013 01:36 |
| URI: | http://eprints.um.edu.my/id/eprint/6257 |
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