Liquid Spray Dielectric Barrier Discharge Induced Plasma-Chemical Vapor Generation for the Determination of Lead by ICPMS

Analytical Chemistry
Xing LiuShenghong Hu

Abstract

In the present study, a novel and sensitive liquid spray dielectric barrier discharge induced plasma-chemical vapor generation technique (LSDBD-CVG) is developed for the determination of lead concentration by inductively coupled plasma mass spectrometry (ICPMS). The dissolved Pb2+ is readily converted to volatile species by LSDBD plasma induced chemical processes in the presence of 5% (v/v) formic acid in a supporting electrolyte (HCl, 0.01 mol L-1). In this LSDBD approach, the sample solution is converted to aerosol and simultaneously mixed with the DBD plasma generated at the nozzle of a pneumatic nebulizer, which greatly facilitates Pb vapor generation because of the enhanced interaction of sprayed analytes and the plasma. Optimal conditions for LSDBD-CVG were identified, and the interference effects from other metal ions were assessed. Under optimized conditions, the detection limit of Pb was found to be 0.003 μg L-1. The repeatability, expressed as the relative standard deviation (RSD) of the peak height, for the five replicate measurements of 0.03 and 1 μg L-1 lead standard, were 2.1% and 1.7%, respectively. Compared with other vapor generation methods, this new LSDBD-CVG offers several advantages including no requirement...Continue Reading

References

Apr 15, 2004·Analytical Chemistry·Xuming GuoGraeme J Gardner
Jun 5, 2007·Analytical and Bioanalytical Chemistry·Irina B KaradjovaDimiter L Tsalev
May 30, 2008·Frontiers in Bioscience : a Journal and Virtual Library·Jennifer R O'Hara, Andre G Buret
Mar 1, 2013·European Journal of Inorganic Chemistry·Kristine Deibler, Partha Basu

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Citations

Aug 15, 2019·Chemical Communications : Chem Comm·Chaoqun WangYi Lv
Jan 25, 2021·Analytica Chimica Acta·Guanghui NiuJoachim Franzke
Dec 31, 2021·ACS Applied Materials & Interfaces·Bichen XiaoXianbao Wang

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