| 不确定度在测定生活饮用水氯化物分析中的应用 |
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| 引用本文： | 白晶,孙晓红,刘彤. 不确定度在测定生活饮用水氯化物分析中的应用[J]. 中国卫生工程学, 2008, 7(6): 361-362 |
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| 作者姓名： | 白晶 孙晓红 刘彤 |
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| 作者单位： | 哈尔滨市疾病预防控制中心,黑龙江,哈尔滨,150056 |
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| 摘 要： | 目的探讨不确定度在测定生活饮用水中氯化物分析中的应用。方法采用GB／T5750．5—2006《生活饮用水标准检验方法无机非金属指标》进行检测，分析不确定度的来源并计算不确定度。结果采用硝酸银容量法测定生活饮用水中氯化物，水样氯化物含量为5．3mg／L时，其合成不确定度：μrel（Cl-）=0．04，μ（Cl-）=C（Cl-）×μrel（Cl-）=0．21mg／L；扩展不确定度：μ=Kμ（Cl-）=0．42mg／L（K=2）。结论置信概率为95％时水样氯化物含量为5．3mg／L，其不确定度为0．42mg／L。
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| 关 键 词： | 不确定度 氯化物 硝酸银容量法 |
Uncertainty Application in Determination of Chloride in Drinking Water |
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| BAI Jing,SUN Xiao-hong,LIU Tong. Uncertainty Application in Determination of Chloride in Drinking Water[J]. Chinese Journal of Public Health Engineering, 2008, 7(6): 361-362 |
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| Authors: | BAI Jing SUN Xiao-hong LIU Tong |
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| Affiliation: | BAI Jing,SUN Xiao-hong,LIU Tong.Harbin Center for Disease Control and Prevention,Harbin Heilongjiang 150056,China |
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| Abstract: | Objective To discuss uncertainty in determination of chloride in drinking water. Methods According to national standards （ GB/T 5750. 5 - 2006 ）, chloride in drinking water was detected and sources of uncertainty were analyzed and calculated. Results When the quantity of chloride in water sample was 5.3 mg/L, μrel（Cl-）=0.04,μ（Cl-）=C（Cl-）×μrel（Cl-）=0.21mg/L, and μ=Kμ（Cl-）（K=2）=0.42mg/L Conclusion Uncertainty with the quantity of chloride in water sample is 5.3 mg/L and confidence probability is 95%. |
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| Keywords: | Uncertainty Chloride Silver nitrate volumetric method |
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