Kamburova M
Department of Chemistry, Higher Institute of Agriculture, 4000 Plovdiv, Bulgaria.
Talanta. 1992 Aug;39(8):997-1000. doi: 10.1016/0039-9140(92)80285-l.
Optimum conditions for complexation in the systems triphenyl-tetrazolium chloride-iodate-iodide-dichlorethane and triphenyltetrazolium chloride-periodate-iodide-dichlorethane were found. The molar absorptivity of the complex was 7.48 x 10(4) 1. mole(-1). cm(-1) for the iodate, and 9.09 x 10(4)1. mole(-1) cm(-1) for the periodate. Beer's law is adhered to in the range of 0.04-0.7 mug/ml for iodate and 0.02-0.35 mug/ml for periodate. The influence of foreign ions was studied. Cr(VI), Hg(II) and S(2)O(2-)(3) interfere. The proposed method has been applied to analysis of iodate and periodate in fresh water.
已找出在氯化三苯基四氮唑-碘酸盐-碘化物-二氯乙烷体系和氯化三苯基四氮唑-高碘酸盐-碘化物-二氯乙烷体系中进行络合反应的最佳条件。该络合物的摩尔吸光系数，对于碘酸盐为7.48×10⁴ 1·mol⁻¹·cm⁻¹，对于高碘酸盐为9.09×10⁴ 1·mol⁻¹·cm⁻¹。碘酸盐在0.04 - 0.7μg/ml范围内、高碘酸盐在0.02 - 0.35μg/ml范围内符合比尔定律。研究了外来离子的影响。Cr(VI)、Hg(II)和S₂O₃²⁻有干扰。所提出的方法已应用于淡水中碘酸盐和高碘酸盐的分析。
