2014•Journal of environmental healthRequires access
Determination of trace lead in environmental water body by carbon nanotube solid phase extraction-flame atomic absorption spectrometry
Wang Nan
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Abstract
Objective To establish a method for the determination of trace lead in environmental water body by carbon nanotube solid phase extraction-flame atomic absorption spectrometry. Methods Lead in environmental water samples was concentrated by carbon nanotube and the concentration was determined by flame atomic absorption spectrometry. The best optimum experimental conditions were as follows: pH 6.0 of water sample, 60 min extraction,1.0 mol/L nitrite acid as desorption solvent, 10 min desorption. Results The limit of detection was 1.4 μg/L, the average recovery rates were 100.3%-100.7% and RSD was 2.1%. Conclusion The method is applicable to the determination of trace lead in various environmental water body with good convenience,sensitivity and reliability.