分光光度法测定游泳池水中尿素的不确定度分析

摘要

Objective:To analyze the uncertainty of spectrophotometry method determination of urea in swimming pool water.Method:Urea content in swimming pool water was detected by spectrophotometry method,uncertainty of test results was analyzed based on uncertainty evaluation criteria. Result:When sampling for 10 mL,k=2,the content of the detection result of the urea was 0.746 mg/L,the uncertainty was 0.101 mg/L. Conclusion:Uncertainty of test results of urea content in the pool water are composed of a number of components,spectrophotometric determination reflects the scientific nature,is with important guiding significance for the swimming pool water quality monitoring.%目的：分析分光光度法测定游泳池水中尿素的不确定度。方法：采取分光光度法对游泳池水中的尿素含量进行检测，依据不确定度评定标准分析检测结果的不确定度。结果：取样为10 mL，k=2时，尿素含量检测结果为取样10 mL时尿素含量0.746 mg/L，不确定度为0.101 mg/L。结论：游泳池水中尿素含量测定结果的不确定度由多项分量组成，分光光度法反映出测定的科学性，对游泳池水质监测具有重要指导意义。