直饮水中亚硝酸盐含量测定的若干探讨  

Several discussions on nitrite content in direct drinking water

作　　者：王益萍[1] 沈仁富[1] 陈海红[1] 陈金斌[1] 陈宇鸿[1] 

机构地区：[1]浙江省温岭市疾病预防控制中心,浙江温岭317500

出　　处：《中国卫生检验杂志》2012年第6期1288-1290,共3页Chinese Journal of Health Laboratory Technology

摘　　要：目的:直饮水中亚硝酸盐含量测定的若干探讨,为直饮水中亚硝酸盐含量标准提供参考依据,为直饮水中亚硝酸盐含量测定提供检测依据,并将该方法应用于各类直饮水中的亚硝酸盐含量测定,有效指导人们安全饮水。方法:参考GB/T8538-1995《饮用天然矿泉水检验方法》和GB/T5750-2006《生活饮用水标准检验方法》,优化方法中一些测定条件,对直饮水中亚硝酸盐进行分析测定。结果:在0.00～9.90×10-2 mg/L浓度范围内呈线性关系,工作曲线y=2.2134x+0.0007,相关系数为0.9998,最低检出浓度为6.60×10-4 mg/L,相对标准偏差为0.96%～16.0%,加标回收率93.6%～122%。结论:该方法适合于直饮水中亚硝酸盐含量的测定,并能为直饮水中亚硝酸盐标准提供参考依据,为相关监管部门提供相应的检测依据。Objective：To provide reference for standard content and determination basis of nitrite in direct drinking water based on discussion on nitrite determination,so as to ensure the drinking water safety.Methods：Nitrite content in direct drinking water were determined based on GB/T8538-1995 ＂Methods for examination of drinking natural mineral water＂ and GB/T5750-2006 ＂Standard examination methods for drinking water＂ with several test conditions were optimized.Results：Nitrite was linear in the range of 0.00～9.90×10-2 mg/L,correlation coefficient was r=0.9998,minimum detectable concentration was 6.60×10-4 mg/L.The relative standard deviation was 0.96%～16.0%.The recovery was between 93.6%～122%.Conclusion：The method is suitable for the determination of nitrite in drinking water,and can provide reference for the content range and determination basis of nitrite in drinking water.

关 键 词：直饮水 亚硝酸盐 安全饮水 

分 类 号：R123.1[医药卫生—环境卫生学]