生活饮用水中亚硝酸盐的现场快速检测法  

Fast-field detection of nitrite in drinking water

作　　者：张维[1] 张毅 张明月[1] ZHANG Wei;ZHANG Yi;ZHANG Ming-yue(Physical and Chemical Laboratory,Tianjin Centers for Disease Control and Prevention,Tianjin,300011,China)

机构地区：[1]天津市疾病预防控制中心卫生检验所理化室,天津300011

出　　处：《职业与健康》2018年第17期2340-2342,共3页Occupation and Health

摘　　要：目的开展饮用水中亚硝酸盐现场快速检测方法学实验,应用便携式分光光度计及配套试剂包开展检测,并评价方法效果。方法采用便携式分光光度计测定吸光度值,绘制内置标准曲线,实现生活饮用水中亚硝酸盐浓度现场快速直读。结果本方法线性范围0.010~0.300 mg/L,r>0.999 0,检出限和最低检出浓度分别为0.015 mg/L和0.060 mg/L。用生活饮用水水样进行精密度实验,相对标准偏差为0.00%~7.04%。分别用低、中、高3个浓度亚硝酸盐氮标准溶液(浓度分别为0.020、0.100、0.200 mg/L)进行加标回收实验,回收率为84.0%~110.0%。结论该现场快速检测方法准确、简便和快速,适用于饮用水中亚硝酸盐的现场检测。[Objective]To carry out fast-field detection methodology experiment of nitrite in drinking water, to apply portable spectrophotometer and auxiliary reagent package for testing, and evaluate method effect.[Methods] The portable spectrophotometer was used in this study,internal standard curve was drawn, concentration could be read directly in drinking water. [Results] The linear range of the method was 0.010-0.300 mg/L, r0.999 0, and the detection limit and minimum detection concentration were 0.015 mg/L and 0.060 mg/L. The precision test of drinking water sample was carried out, the relative standard deviation was 0.00%-7.04%. Standard solutions with low, medium and high concentrations of nitrite nitrogen（concentration： 0.020, 0.100, and 0.200 mg/L） were used to carry out label recovery experiments, and the recovery rate was 84.0%-110.0%. [Conclusion] This method is accurate, simple and fast, and is suitable for the detection of nitrite in drinking water.

关 键 词：亚硝酸盐 饮用水 现场快速检测 

分 类 号：R115[医药卫生—公共卫生与预防医学]