离子色谱安培检测法测定醋酸中的痕量碘离子  

Determination of trace levels of iodide in acetic acid by ion exchange chromatography with amperometric detector

作　　者：梁立娜[1] 墨淑敏[1] 蔡亚岐[1] 牟世芬[1] 温美娟[2] 

机构地区：[1]中国科学院生态环境研究中心环境化学与生态毒理学国家重点实验室,北京100085 [2]北京科技大学化学系,北京100083

出　　处：《化学研究与应用》2006年第7期881-883,共3页Chemical Research and Application

基　　金：国家重点基础研究计划(973项目)资助课题(2003CB415001)

摘　　要：A method for determination of iodide in complex matrix-acetic acid,glacial acetic acid and acetic anhydride was established using high performance anion exchange chromatography with pulsed amperometric detector(HPAEC-PAD).Using 200 mmol/Lnitric scid solution as mobile phase,iodide can be separated within 10 min on high hydrophilic IonPac AS16 column.The relative standard deviation(RSD)of 20μg/L iodide standard solution prepared in industrial acetic acid,glacial acetic acid and acetic anhydride was 1.8%,11.5% and 8.0%,separately.The detection limit was 0.02,0.04μg/L,separately(500μg injection,3 times of signal to moise ratio).The proposed method was applied for determination of iodide in real samples,noiodide was detected and the recovery was ranging from 85 to 111%?This method has asvantages of simplicity to prepare the samples,no inteference and high sensitivity,etc.A method for determination of iodide in complex matrix - acetic acid, glacial acetic acid and acetic anhydride was established using high performance anion exchange chromatography with pulsed amperometric detector （HPAEC -PAD）. Using 200 mmol/Lnitric scid solution as mobile phase, iodide can be separated within 10 min on high hydrophilic IonPac AS16 column. The relative standard deviation （RSD） of 20μg/L iodide standard solution prepared in industrial acetic acid, glacial acetic acid and acetic anhydride was 1.8%, 11.5% and 8.0% , separately. The detection limit was 0. 02, 0. 04p.,g/L, separately （500μg injection, 3 times of signal to moise ratio）. The proposed method was applied for determination of iodide in real samples, noiodide was detected and the recovery was ranging from 85 to 111% o This method has asvantages of simplicity, to prepare the samples, no inteference and high sensitivity, etc.

关 键 词：高效阴离子交换色谱 安培检测器 碘离子 乙酸 冰醋酸 醋酸酐 

分 类 号：O657.75[理学—分析化学]