Determination of Cd, Cr, Cu, Pb and Zn from various water samples with use of FAAS techniques after the solid phase extraction on rice bran
| Autor: | P. Subrahmanyam, P. Chiranjeevi, B. Krishna Priya, B. Jayaraj |
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| Rok vydání: | 2008 |
| Předmět: | |
| Zdroj: | Toxicological & Environmental Chemistry. 90:97-106 |
| ISSN: | 1029-0486 0277-2248 |
| Popis: | A facile and novel method has been developed for the determination of cadmium, chromium, copper, lead, and zinc from various water samples using FAAS. In the present investigation, a syringe was loaded with sorbent (rice bran) for the separation and enrichment of cadmium, chromium, copper, lead, and zinc, prior to their analysis by flame atomic absorption spectrometry which was described to substitute the batch and column techniques. The syringe was loaded with 2.0 g of sorbent in order to retain the analyte elements. Six milliliter of sample solution (pH 8.0 ± 0.2) was drawn into the syringe in 15 s and discharged over a period of 15 s. Then, 2.0 M HCl eluent was drawn into the syringe and ejected back to desorb the analyte elements. At the optimum conditions, the percentage recoveries of Cd, Cr, Cu, Pb, and Zn was in the range of 95.5–99.4% with SD of 0.10%. The elements could be concentrated by drawing and discharging several portions of sample successively. The detailed study of various interferences ... |
| Databáze: | OpenAIRE |
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