期刊
BIOLOGICAL TRACE ELEMENT RESEARCH
卷 153, 期 1-3, 页码 134-140出版社
HUMANA PRESS INC
DOI: 10.1007/s12011-013-9677-9
关键词
Preconcentration; Lead; Cloud point extraction; Dithizone; Triton X-114
资金
- Scientific and Technological Research Council of Turkey (TUBITAK)
- HEC Pakistan
In present study, lead (Pb) level in biological samples of children with physiological disorders (liver, bone, and gastrointestinal; age ranged 1-10 years) have been assessed. For comparison purpose, age-matched healthy children were also selected. Cloud point extraction (CPE) was employed for preconcentration of Pb in acid-digested biological samples prior to its determination by flame atomic absorption spectrometry (FAAS). Dithizone (diphenylthiocarbazone) and nonionic surfactant Triton X-114 (TX-114) were used as complexing reagent and extractant, respectively. The effects of several experimental variables on proposed CPE were evaluated. Under the optimum experimental conditions, the observed detection limit (LOD) and the enhancement factor (EF) were 0.08 mu g L-1 and 53, respectively. Relative standard deviation (RSD) of 10 mu g L-1 Pb was 3.4 %. It was observed that children with liver-, bone-, and gastrointestinal-related disorders had three- to fourfold higher Pb level in blood and scalp hair samples.
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