摘要
研究了在硫酸介质中，碘化钾还原溴酸根离子的最佳反应条件，选择的最大吸收波长为350nm，表观摩尔吸光系数为2．24×10^5L·mol^-1·cm^-1，溴酸根离子在0．5～6μg／lomL范围内符合郎伯一比尔定律，检出限为0．25μg/10mL，该法应用于化学试剂中微量溴酸根离子的研究，获得了满意的结果．
The optimum reaction conditions for deoxidizing bromate in a sulfuric acid medium by kalium iodide were studied. 350 nm was selected in this paper. The molar absorptivity was 2.24 ×10^5 L·mol^-1·cm^-1 and the linear range was 0.5 ～6μg/10 mL of bromate. The bound of checking and measurement was 0.25μg/10 mE of BrO3^-. The method was applied to determinate micro amount of bromate in chemical reagents with satisfactory results.
出处
《成都大学学报（自然科学版）》
2007年第3期193-194,198,共3页
Journal of Chengdu University（Natural Science Edition）
关键词
碘化钾
溴酸根离子
紫外分光光度法
硫酸
kalium iodide
bromate
ultraviolet spectrophotometric
sulfuric acid
