柱后紫外衍生-离子色谱法测定天然矿泉水中硼酸  

Determination of boric acid in natural mineral water by ion chromatography post-column derivation with ultra-violet

作　　者：霍宗利[1] 马永建[1] 吉文亮[1] 刘华良[1] 谷静[1] 

机构地区：[1]江苏省疾病预防控制中心,江苏南京210009

出　　处：《现代预防医学》2013年第16期3090-3091,3094,共3页Modern Preventive Medicine

基　　金：江苏省科技支撑计划-社会发展(BE2010745);江苏省临床医学中心(高技术平台)(ZX201109)

摘　　要：目的建立天然矿泉水中硼酸的柱后衍生-离子色谱测定法。方法样品中的硼酸通过离子色谱柱分离,柱后紫外衍生法测定。结果硼酸在0.3～10.0mg/L范围内线性关系良好,相关系数为0.9996;以3倍信噪比计算,本法的检出限为0.3mg/L;方法相对标准偏差为1.8%～2.2%,回收率为94.0%～98.7%。结论该方法线性好,灵敏度高,专属性强,可应用于天然矿泉水中硼酸含量的检测。OBJECTIVE To establish the method of ion chromatography post-column derivation with ultra-violet for determination of boric acid in natural mineral water. METHODS Boric acid in sample was separated and detected after post- column ultraviolet derivation. RESULTS The linear range of the method was from 0.3 to 10 mg/L with the correlation coefficient of 0.9996.The detection limit of the method was 0.3 mg/L. The relative standard deviation was from 1.8% to 2.2% and the recovery was from 94.0% to 98.7%. CONCLUSION The method is sensitive and specific and it is suitable for the determination of boric acid in natural mineral water.

关 键 词：离子色谱 柱后衍生化 矿泉水 硼酸 

分 类 号：R115[医药卫生—公共卫生与预防医学]