摘要
目的:对生活饮用水中硫酸盐的含量进行不确定度评定。方法:根据生活饮用水中硫酸盐含量检测步骤建立测量不确定度模型,分析影响测定结果的各个分量,计算合成不确定度。结果:生活饮用水中硫酸盐测定结果为(20.37±0.26)mg·L^(-1)(k=2)。结论:标准曲线制作是影响测量不确定度的主要来源,其次是标准曲线拟合、样品重复测量。在实验过程中需重点关注,进而提高实验结果的准确度。
Objective:To evaluate the uncertainty of sulfate content in drinking water.Method:According to the detection steps of sulfate content in drinking water,the measurement uncertainty model was established,the components affecting the determination results were analyzed,and the synthetic uncertainty was calculated.Result:The determination result of sulfate in drinking water was(20.37±0.26)mg·L^(-1)(k=2)。Conclusion:Standard curve preparation is the main source of measurement uncertainty,followed by standard curve fitting,and repeated measurement of samples.In the process of experiment,we should pay more attention to improve the accuracy of experimental results.
作者
冯俊富
朱飞如
麦运佳
李峰
FENG Junfu;ZHU Feiru;MAI Yunjia;LI Feng(Beihai Food and Drug Inspection Institute,Beihai 536000,China)
出处
《食品安全导刊》
2022年第25期112-115,共4页
China Food Safety Magazine
