AI Article Synopsis
- The study presents a new preconcentration and separation method for analyzing lead in slurry form, aiming to overcome drawbacks of traditional elution steps and achieve higher enrichment factors.
- Lead is initially collected using a specially treated sorbent and then prepared as a slurry for direct analysis in an atomic absorption spectrometer, achieving a 100-fold enrichment factor.
- The technique is efficient, with a low contamination risk and a low detection limit of 1.67 microg/l, successfully applied to certified sea-water and bovine liver samples with 95% confidence.
Article Abstract
In this study, in order to eliminate the drawbacks of elution step and to reach higher enrichment factors, a novel preconcentration/separation technique for the slurry analysis of sorbent loaded with lead prior to its determination by electrothermal atomic absorption spectrometry was described. For this purpose, at first, lead was collected on ethylene glycol dimethacrylate methacrylic acid copolymer (EGDMA-MA) treated with ammonium pyrolidine dithiocarbamate (APDC) by conventional batch technique. After separation of liquid phase, slurry of the sorbent was prepared and directly pipetted into graphite furnace of atomic absorption spectrophotometer. Optimum conditions for quantitative sorption and preparation of the slurry were investigated. A 100-fold enrichment factor could be easily reached. The analyte element in certified sea-water and Bovine-liver samples was determined in the range of 95% confidence level. The proposed technique was fast and simple and the risks of contamination and analyte loss were low. Detection limit (3delta) for Pb was 1.67 microg l(-1).
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| http://dx.doi.org/10.1016/j.jhazmat.2007.05.033 | DOI Listing |
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