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  • Title: [Determination of trace lead in water samples and salt samples by graphite furnace atomic absorption spectrometry after cloud point extraction].
    Author: Zhang Y, Luo WH, Li H.
    Journal: Guang Pu Xue Yu Guang Pu Fen Xi; 2006 Jul; 26(7):1349-51. PubMed ID: 17020058.
    Abstract:
    A method was developed for the determination of trace lead in water samples and salt samples by GFAAS after cloud point extraction. The parameters of extraction system such as pH, the concentrations of the extractant and the surfactant, and the time for cloud point extraction were optimized. Under the optimized conditions, the detection limits of lead were 0.000 5 microg x g(-1) for salt, and 0.01 microg x L(-1) for water, respectively. The proposed method was applied to the determination of lead in water samples and salt samples, and satisfactory results were obtained.
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