Gas-phase molecular absorption spectrometry: Determination of sulphite with diode-array detection

被引：0
作者：
Susana Cabredo
Javier Galbán
Jesús Sanz
机构：
[1] University of La Rioja,Chemistry Department, Analytical Chemistry Section
[2] University of Zaragoza,Analytical Chemistry Department, Faculty of Sciences
来源：
Microchimica Acta | 1997年 / 127卷
关键词：
sulphite; UV-gas phase; molecular absorption spectrometry; air samples;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A method is described for determining sulphite by SO2 generation and UV-visible molecular absorption spectrometry with diode-array detection. The molecular absorption maximum of SO2 appears at 198 nm. The parameters affecting generation (particularly those relating to the kinetics of the process) and determination are optimized; under the optimum conditions found, only a 30 s preconcentration time is necessary. The linear response range is between 10 and 1000 μg ml−1 of SO32−, the RSD is 3.5% and the detection limit is 3.2 μg ml−1. The effect of different species on the SO2 signal is also studied. The method is applied to the determination of SO2 in air samples.
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页码：239 / 242
页数：3
相关论文
共 48 条
  • [1] Szekeres L.(1974)undefined Talanta 21 1-undefined
  • [2] Pranitis D. M.(1989)undefined Anal. Chim. Acta 217 123-undefined
  • [3] Meyerhoff M. E.(1989)undefined Yankuang Ceshi 8 32-undefined
  • [4] Zhou L.(1989)undefined Agric. Biol. Chem. 53 2347-undefined
  • [5] Matsumoto K.(1989)undefined Fresenius J. Anal. Chem. 332 849-undefined
  • [6] Matsubara H.(1989)undefined Anal. Chim. Acta 225 359-undefined
  • [7] Ukeda H.(1989)undefined Anal. Chem. 61 1755-undefined
  • [8] Osajima Y.(1989)undefined Anal. Chem. 61 272-undefined
  • [9] Spohn U.(1992)undefined LC GC Intl. 5 20-undefined
  • [10] Hahn M.(1992)undefined Talanta 39 1471-undefined
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