高等学校化学学报

高等学校化学学报 ›› 1999, Vol. 20 ›› Issue (S1): 380.

• Molecular Spectroscopy • 上一篇    下一篇

Decoloring Spectrophotometric Method for the Determination of Sulfur Dioxide

SHEN Shuang-Long, CHEN Xiao-Ni   

  1. Department of Chemistry, Jin Dong Nan Teacher's College, Changzhi, Shanxi 046011, P. R. China
  • 出版日期:1999-12-31 发布日期:1999-12-31

Decoloring Spectrophotometric Method for the Determination of Sulfur Dioxide

SHEN Shuang-Long, CHEN Xiao-Ni   

  1. Department of Chemistry, Jin Dong Nan Teacher's College, Changzhi, Shanxi 046011, P. R. China
  • Online:1999-12-31 Published:1999-12-31

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摘要：

The discharge of sulfur dioxide (SO2) is one of the most important reasons of resulting in the environmental pollution. Current method for determination SO2 is fuchsine-formaldehyde spectrophotometry. This paper describes a decoloring spectrophotometry, which is based on azo dye being reduced in the presence of manganese (Ⅱ) as inducer and in weak acidic medium. It is shown that the result has better selectivity and higher sensitivity. This method was used to measure the content of SO2 in the air of northern china with satisfactory results.

Abstract:

The discharge of sulfur dioxide (SO2) is one of the most important reasons of resulting in the environmental pollution. Current method for determination SO2 is fuchsine-formaldehyde spectrophotometry. This paper describes a decoloring spectrophotometry, which is based on azo dye being reduced in the presence of manganese (Ⅱ) as inducer and in weak acidic medium. It is shown that the result has better selectivity and higher sensitivity. This method was used to measure the content of SO2 in the air of northern china with satisfactory results.

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