摘要
采用亲水性强的AS22型阴离子交换分离柱处理水样,用离子色谱法测定样品中的碘化物,通过优化样品预处理条件、色谱条件,消除常见阴离子干扰,使方法在0 mg/L^5.00 mg/L范围内线性良好。方法检出限为0.002 mg/L,3个质量浓度水平的标准溶液7次测定结果的RSD为0.5%~3.5%,实际水样的加标回收率为85.2%~100%。
A method for determination of iodide in water by ion chromatography was presented based on Ion- Pac AS22 Column with carbonate as eluent. This paper discussed the sample pretreatment conditions, the optimi-zation of chromatographic conditions, common anionic interference, calibration curve and the detection limit, precision, accuracy, etc. . The results showed that this method was not subject to other anion interference. It had a wide linear range with correlation coefficient R 〉0. 999. The detection limit was 0. 002 mg/L, the relative standard deviations of standard solutions at 3 mass concentration levels were in range of 0. 5% -3.5%（n=7）. Spiked recovery of practical samples were in range of 85.2% -100%.
出处
《环境监测管理与技术》
CSCD
2017年第4期50-52,56,共4页
The Administration and Technique of Environmental Monitoring
基金
国家环境保护标准制修订基金资助项目(环办函[2010]486号)
关键词
碘化物
离子色谱法
碳酸盐体系
水质
Iodine
Ion chromatography
Carbonate system
Water quality
