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Homogeneous catalysis for photochemical vapor generation for speciation of inorganic selenium by high performance liquid chromatography-atomic fluorescence spectrometry

Homogeneous catalysis for photochemical vapor generation for speciation of inorganic selenium by... A simple, sensitive and cost-effective homogeneous catalysis photochemical vapor generation (PVG) system for HPLC separation and atomic fluorescence spectrometry detection was reported herein for the speciation analysis of trace Se(iv) and Se(vi). Homogeneous Cd ions as a catalyst were stable and reliable, without complex nanomaterial synthesis and coating. Under the conditions of 60 g mL1 Cd ions, 3.5 m reaction coil, 40% acetic acid and 0.30 mL min1 of 5 mM Na2CO31.3 mM NaHCO3, the online HPLC-Cd-PVG-AFS system enabled us to achieve a calculated detection limit of 0.16 and 0.21 ng mL1 for Se(iv) and Se(vi), respectively. Moreover, it could also work successfully even in a phosphate separation system. Under the optimized conditions of 60 g mL1 Cd ions, 5 m reaction coil, 40% acetic acid and 0.35 mL min1 of 50 mM Na2HPO3, a detection limit of 0.49/0.78 ng mL1 for Se(iv)/Se(vi) was achieved. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Analytical Atomic Spectrometry Royal Society of Chemistry

Homogeneous catalysis for photochemical vapor generation for speciation of inorganic selenium by high performance liquid chromatography-atomic fluorescence spectrometry

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Publisher
Royal Society of Chemistry
Copyright
This journal is © The Royal Society of Chemistry
ISSN
0267-9477
eISSN
1364-5544
DOI
10.1039/d1ja00247c
Publisher site
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Abstract

A simple, sensitive and cost-effective homogeneous catalysis photochemical vapor generation (PVG) system for HPLC separation and atomic fluorescence spectrometry detection was reported herein for the speciation analysis of trace Se(iv) and Se(vi). Homogeneous Cd ions as a catalyst were stable and reliable, without complex nanomaterial synthesis and coating. Under the conditions of 60 g mL1 Cd ions, 3.5 m reaction coil, 40% acetic acid and 0.30 mL min1 of 5 mM Na2CO31.3 mM NaHCO3, the online HPLC-Cd-PVG-AFS system enabled us to achieve a calculated detection limit of 0.16 and 0.21 ng mL1 for Se(iv) and Se(vi), respectively. Moreover, it could also work successfully even in a phosphate separation system. Under the optimized conditions of 60 g mL1 Cd ions, 5 m reaction coil, 40% acetic acid and 0.35 mL min1 of 50 mM Na2HPO3, a detection limit of 0.49/0.78 ng mL1 for Se(iv)/Se(vi) was achieved.

Journal

Journal of Analytical Atomic Spectrometry – Royal Society of Chemistry

Published: Sep 22, 2021

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