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研究了在中性条件下，痕量硒（Ⅳ）对甲酚兰与硫化钠生成无色化合物的反应具有催化作用，建立了一种催化动力学光度法测定痕量硒（Ⅳ）的方法。方法的线性范围为０～２．５μｇ／１０ｍｌ，灵敏度为６．４×１０－５μｇ．ｍｌ－１，用于水和人发中硒（Ⅳ）的测定，结果令人满意
The catalytic activity of a trace amount of selenophene (Ⅳ) to the formation of colorless compounds from sodium sulfide catalyzed by trace selenium (Ⅳ) was studied under neutral conditions. A catalytic kinetic spectrophotometric method for the determination of trace selenium (Ⅳ) was established. The linear range of the method is 0 ~ 2.5μg / 10ml, the sensitivity is 6.4 × 10-5μg. ml-1, for the determination of selenium (Ⅳ) in water and human hair, with satisfactory results