Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10561006 | Talanta | 2005 | 7 Pages |
Abstract
Subsequently column experiments were carried out with PANI and the separation of the species was carried out by selective and sequential elution with 0.3% HCl for CH3Hg+ and 0.3% HCl-0.02% thiourea for Hg2+. This was then followed by further pre-concentration of mercury on a gold trap and its determination by CVAAS. The uptake efficiency studies showed that the PANI column was able to accumulate up to 100 mg Hg2+/g and 2.5 mg CH3Hg+/g. This method allows both preconcentration and speciation of mercury with preconcentration factors around 120 and 60 for Hg2+ and CH3Hg+, respectively. The interfering effects of various foreign substances on the retention of mercury were investigated.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
M.V. Balarama Krishna, D. Karunasagar, S.V. Rao, J. Arunachalam,