离子色谱法同时测定三(乙基膦酸)铝原药纯度及各杂质离子的含量  

Determination of phosethyl-Al and the impurities by Ion-exchange chromatography

作　　者：王雪[1] 朱岩[1] 张嘉捷[1] 

机构地区：[1]浙江大学化学系,浙江杭州310028

出　　处：《浙江大学学报（理学版）》2009年第2期180-182,共3页Journal of Zhejiang University（Science Edition）

基　　金：浙江省自然科学基金资助项目(No.Z404105)

摘　　要：建立了离子色谱抑制电导同时检测三(乙基膦酸)铝原药中主要成分及各杂质离子的方法.采用高容量色谱柱AS9-HC,以9mmol·L-1的Na2CO3溶液为流动相.抑制模式为0.02mol·L-1H2SO4化学抑制.三(乙基膦酸)铝、Cl-、HPO32-、SO42-、PO43-的检出限(S/N=3)分别为15、3、12、6、5μg·L-1.主成分乙基膦酸的保留时间、峰面积、峰高的相对标准偏差分别为0.30%、1.31%、0.13%,其加标回收率为91%.所得结果令人满意,可以用于三(乙基膦酸)铝产品的检测和质量控制.An ion chromatography method with non-suppressed conductivity detection was developed for simultaneous determination of phosethyl-Al and the impurities in it . High capacity column AS9-HC was chosen, and the eluent was 9mmol· L^-1 Na2CO3. 0.02 mol·L -1 H2SO4 was used as suppressing solution. The limit of detection（S/N=3）of phosethyl Al, chloride, phosphite, sodium, phosphate were 15, 3, 12, 6, 5μg·L^-1, respectively. The relative standard deviations （RSDs） of retention time, peak area and peak height of phosethyl-Al were 0.30%, 1.31% and 0. 13%. The recovery of phosephy-Al was 91%. The result was satisfactory, and the method was proised to he suitable for the determination and quality control of phosethyl-Al product.

关 键 词：离子色谱法 三(乙基膦酸)铝 

分 类 号：O657.7[理学—分析化学]