摘要
研究了在强酸性条件下，邻苯二酚紫与碘酸根离子的褪色反应，拟定了测定加碘食盐中碘离子简便、快速的分析方法，确定了该褪色反应的最佳褪色条件．碘离子在０．３～２．０μｇ／１０ｍＬ范围内服从比尔定律，邻苯二酚紫摩尔吸光系数ε５５６＝１．１５×１０５Ｌ·ｍｏｌ－１·ｃｍ－１．
The color fading reaction of pyrocatechol violet with iodate ion in stronger acid was studied and a method for determination of iodine in the salt was proposed.Molar absorptivity is 1.15×10 5 L·mol -1 ·cm -1 .Beer′s law is obeyed from 0.3～2.0 μg/10mL
出处
《宁夏大学学报（自然科学版）》
CAS
1997年第1期78-80,共3页
Journal of Ningxia University(Natural Science Edition)
