摘要
目的建立离子色谱法测定生活饮用水中有溴酸盐、氯酸盐、亚氯酸盐的检测方法。方法水样经0.22μm滤膜过滤后,随氢氧化钾淋洗液进入离子色谱的离子交换系统。根据分离柱对不同离子的亲和力不同进行分离,外标法定量。结果溴酸盐回收率为87.5%～116.0%,相对标准偏差为2.69%;氯酸盐回收率为86.8%～99.0%,相对标准偏差为1.21%;亚氯酸盐回收率为80.1%～87.0%,相对标准偏差为0.93%。以上3个项目相关系数均大于0.999 0。结论该方法检测速度快,样品处理简便,能获得满意的分离效果,具有较高的灵敏度和精密度,回收率也满足方法学要求,完全适合于生活饮用水中有溴酸盐、氯酸盐、亚氯酸盐的同时测定。
[ Objective] To establish a method for determination of bromate, chlorate, and chlorite in drinking water by ion chroma- tography. [ Methods] After filtration by 0.22 μm membrane filter, The water samples were put into the ion exchange system of ion chromatography, with the potassium hydroxide eluent. Different ions separated with the different affinity in one separation column and determined quantitatively by the external standard method. [ Results] Recoveries of bromate were 87.5% to 116.0%, and the relative standard deviation {RSD） was 69% ; recoveries of chlorate were 86.8% to 99.0% , with RSD of 1.21% ; recoveries of chlorite of 80.1% to 87.0%, with the RSD of 0.93 % and the correlation coefficients of all 3 ions were r 〉 0.999 0. [ Conclusion ] This method is simple, rapid, can obtain satisfactory separation, with high sensitivity and precision. Also, the recovery meets the methodological requirements. Above all, this method is entirely suitable for the simultaneous determination of bromate, chlorate, and chlorite in drinking water.
出处
《职业与健康》
CAS
2013年第7期824-825,829,共3页
Occupation and Health
