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2013•Chinese Journal of Analysis LaboratoryRequires access

Simultaneous determination of trace amount of lead and cadmium in mouse liver after cloud point extraction by GFAAS

Qiufang Liu

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Abstract

A new method for simultaneous determination of trace amounts of lead and cadmium in mouse liver by GFAAS was proposed in this paper.Trace of Pb2+and Cd2+was extracted from the sample solution in the form of coordination complex with dithizone at pH 9.0 by cloud point extraction with Triton X-100 as a non-ionic surfactant.NH4H2PO4 was used as a matrix modifier.Detection limits for Pb and Cd were 0.103 and 0.0136 μg/L,respectively.The relative standard deviations(RSD) for six replicate determinations of Pb and Cd were 1.4% and 0.73%,with enhancement factors of 7.1(Pb) and 9.3(Cd) in 10 mL sample solution.The proposed method was successfully applied to the determination of lead and cadmium in the mouse live with the recoveries of 96.4%-97.1%,and 101.3%-103.2%,respectively.

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A new method for simultaneous determination of trace amounts of lead and cadmium in mouse liver by GFAAS was proposed in this paper.Trace of Pb2+and Cd2+was extracted from the sample solution in the form of coordination complex with dithizone at pH 9.0 by cloud point extraction with Triton X-100 as a non-ionic surfactant.NH4H2PO4 was used as a matrix modifier.Detection limits for Pb and Cd were 0.103 and 0.0136 μg/L,respectively.The relative standard deviations(RSD) for six replicate determinations of Pb and Cd were 1.4% and 0.73%,with enhancement factors of 7.1(Pb) and 9.3(Cd) in 10 mL sample solution.The proposed method was successfully applied to the determination of lead and cadmium in the mouse live with the recoveries of 96.4%-97.1%,and 101.3%-103.2%,respectively.

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Available abstract

A new method for simultaneous determination of trace amounts of lead and cadmium in mouse liver by GFAAS was proposed in this paper.Trace of Pb2+and Cd2+was extracted from the sample solution in the form of coordination complex with dithizone at pH 9.0 by cloud point extraction with Triton X-100 as a non-ionic surfactant.NH4H2PO4 was used as a matrix modifier.Detection limits for Pb and Cd were 0.103 and 0.0136 μg/L,respectively.The relative standard deviations(RSD) for six replicate determinations of Pb and Cd were 1.4% and 0.73%,with enhancement factors of 7.1(Pb) and 9.3(Cd) in 10 mL sample solution.The proposed method was successfully applied to the determination of lead and cadmium in the mouse live with the recoveries of 96.4%-97.1%,and 101.3%-103.2%,respectively.

Key concepts: Chemistry, Cadmium, Dithizone, Cloud point, Extraction (chemistry), Detection limit, Trace Amounts, Chromatography

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