摘要
目的研究五步碘量法测定消毒剂中二氧化氯含量准确度的主要影响因素,确保测定的准确性。方法依据JJF1059-1999《测量不确定度评定与表示》中的测量不确定度评定理论进行评定。结果五步碘量法测定消毒剂中二氧化氯含量为20.4g/L,扩展不确定度为0.30g/L。结论测量重复性引入的不确定度分量所占比重最大,严格控制操作过程,可提高检测结果的准确性。
Objective To investigate the main influencing factors of measuring chlorine dioxide in disinfectant by five - step iodometry method in order to ensure the accuracy of measurement. Methods Assessment was based on JJF1059 - 1999 ＂Evaluation and Expression of Uncertainty in Measurement＂. Results The concentration of chlorine dioxide meas ured with five - step iodometry method was 20. 4 g/L and the expanded uncertainty was 0. 30 g/L. Conclusion The repeatability of the measurements exerts the largest influence on uncertainty of measurement. Strict control of operation procedures can improve the accuracy of measured results.
出处
《中国消毒学杂志》
CAS
北大核心
2013年第5期416-419,共4页
Chinese Journal of Disinfection
关键词
二氧化氯
含量
碘量法
不确定度
chlorine dioxide
content
five - step iodometry method
uncertainty
