Spectrophotometric determination of selenium with 2-mercaptobenzothiazole

@article{Bera1968SpectrophotometricDO,
  title={Spectrophotometric determination of selenium with 2-mercaptobenzothiazole},
  author={B. C. Bera and Madan Mohan Chakrabartty},
  journal={Analyst},
  year={1968},
  volume={93},
  pages={50-55}
}
A rapid, sensitive and selective spectrophotometric method has been developed for the determination of micro amounts of selenium. This method is based on the absorptiometric measurement of the stable yellow colour formed by the reaction of selenium(IV) with 2-mercaptobenzothiazole in strong hydrochloric acid solution (more than 6·5 M). At 370 mµ, Beer's law is obeyed from 1 to 7 µg of selenium per ml, the optimum range being from 3 to 6 µg. The sensitivity and molar absorptivity at 370 mµ are 0… 
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