地下水和土壤中不同形态碘的分离测定  

Separation and Determination of Different Iodine Species in Groundwater and Soil Samples

作　　者：李洪伟[1] 刘晓端[2] 李保山[1] 

机构地区：[1]北京化工大学化工资源有效利用国家重点实验室,北京100029 [2]国家地质实验测试中心,北京100037

出　　处：《岩矿测试》2009年第4期337-341,共5页Rock and Mineral Analysis

基　　金：国土资源地质大调查--中国农业生态地球化学评价体系研究与成果集成项目资助(1212010610918)

摘　　要：实验选用717强碱型阴离子树脂吸附溶液中的碘离子和碘酸根,用30g/L氯化钠溶液和2.0mol/L硝酸钠溶液先后从树脂上洗脱碘酸根和碘离子,达到不同形态碘分离的目的。洗脱液用碘-淀粉比色法测定碘的含量。方法已用于我国高碘地区地下水和土壤样品中不同形态碘的分析。In this study, iodide and iodate in samples were adsorbed in exchange column containing 717 strongbase anion exchange resin. Then iodate and iodide are effectively eluted by 30 g/L sodium chloride solution and 2.0 mol/L sodium nitrate solution and collected separately. Iodide and iodate in the eluates are then determined with iodine-starch colorimetry. The method provides the advantages of high precision, simple operation and has been applied to the determination of different iodine species in groundwater and soil samples from high-iodine areas in China.

关 键 词：碘形态 717强碱型阴离子树脂 碘-淀粉比色法 地下水 土壤 

分 类 号：O613.44[理学—无机化学] O657.75[理学—化学]