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2009•Journal of Hebei Agricultural SciencesRequires access

Determination of Trace Pb in Water Samples by Spectrophotometry after Cloud Point Extraction

Lin Zhang

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Abstract

A new method of determining trace Pb in water by spectrometry after cloud point extraction with dithizone was proposed.The effect of experimental conditions was discussed.The chemical variables affecting the separation phase and extraction recovery were optimized.Under the optimum conditions,the detection of Pb was 3.430 μg/L.The regression equation was A=0.010 1 C +0.008,the correlation coefficient was 0.990 3,and the linear range was from 20 μg/L to 100 μg/L.The proposed method had been applied to the determination of Pb in water samples and the satisfactory result was obtained.

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A new method of determining trace Pb in water by spectrometry after cloud point extraction with dithizone was proposed.The effect of experimental conditions was discussed.The chemical variables affecting the separation phase and extraction recovery were optimized.Under the optimum conditions,the detection of Pb was 3.430 μg/L.The regression equation was A=0.010 1 C +0.008,the correlation coefficient was 0.990 3,and the linear range was from 20 μg/L to 100 μg/L.The proposed method had been applied to the determination of Pb in water samples and the satisfactory result was obtained.

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Available abstract

A new method of determining trace Pb in water by spectrometry after cloud point extraction with dithizone was proposed.The effect of experimental conditions was discussed.The chemical variables affecting the separation phase and extraction recovery were optimized.Under the optimum conditions,the detection of Pb was 3.430 μg/L.The regression equation was A=0.010 1 C +0.008,the correlation coefficient was 0.990 3,and the linear range was from 20 μg/L to 100 μg/L.The proposed method had been applied to the determination of Pb in water samples and the satisfactory result was obtained.

Key concepts: Dithizone, Cloud point, Extraction (chemistry), Chemistry, Correlation coefficient, Analytical Chemistry (journal), Spectrophotometry, TRACE (psycholinguistics)

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