本文叔述了荧光法测定工业硫磺中痕量硒的方法。对试样分解酸液的选择、溶液的pH值、络合物荧光的稳定性、还原盐酸用量、萃取用有机试剂的选择及共存离子的影响等都作了试验。结果表明,方法检出限0.002μg/5ml环已烷,在≤1ppm硒量范围,变异系数为3～8％,标准加入回收率为90～95％,能满足检测硫磺中≤1ppm硒量的要求。 This article sums up the method for the determination of trace selenium in industrial sulfur by fluorescence spectrometry. The choice of acid solution for the sample decomposition, the pH of the solution, the stability of the complex fluorescence, the amount of reduced hydrochloric acid, the choice of extraction organic reagents and the influence of coexisting ions were tested. The results showed that the detection limit was 0.002μg / 5ml cyclohexane, the coefficient of variation was 3 ~ 8% in the range of ≤1ppm selenium, and the standard recovery was 90 ~ 95% Claim.