ICP-MS测定生活饮用水中碘含量  

The determination of iodine content in drinking water by ICP-MS

作　　者：左书梅[1] 张晓燕[1] 杨立学[1] 薛会珍 何燕[1] 邹晓华[1] 董新凤[1] 

机构地区：[1]石家庄市疾病预防控制中心,河北050011 [2]平山县疾病预防控制中心

出　　处：《医学动物防制》2014年第12期1374-1375,1390,共3页Journal of Medical Pest Control

基　　金：河北省卫生厅医学科研指导项目(20130660)

摘　　要：目的建立酸性条件下电感耦合等离子体质谱（ICP-MS）测定水中碘含量的方法。方法水样经硝酸酸化,超声振荡0.5 min后直接用电感耦合等离子体质谱仪（ICP-MS）进行检测。结果碘元素在0.1～50.0μg/L线性范围内,线性回归方程为y=568.57x＋56.142,相关系数r=0.9 999,检出限为0.018μg/L;高、中、低3个加标水平的平均回收率为98.0%～100.1%,相对标准偏差为0.78%～2.02%。结论 ICP-MS测定生活饮用水中碘含量前处理简单快速、灵敏度高、准确度好,适合于地方病检测工作中大批量水碘的测定。Objective Establish the method for the determination of iodine content in water by inductively coupled plasma mass spectrometry（ ICP- MS）. Methods After adding nitric acid,water sample was mixed0. 5 min under ultrasound sonication,and then was determined by ICP- MS. Results Iodine element in the range of 0. 1- 50 μg / L,the linear equation of iodine is y = 568. 57 x ＋ 56. 142,relevant coefficient is r =0. 9999,and the limit of detection is 0. 018 μg / L; The mean recoveries of iodine are 98. 0%- 100. 1% with the relative standard deviation of 0. 78%- 2. 02% under high,medium and low 3 different spiked levels.Conclusions This method has many advantages such as easy and fast,high sensitivity and good accuracy,suitable in the determination of iodine content in a large quantity of water samples.

关 键 词：ICP-MS 水 碘含量 检测 

分 类 号：R123.1[医药卫生—环境卫生学]