摘要
介绍滴定法测定水中CODcr的不确定度分析。用因果图分析了测量器具、标准溶液、环境条件和测量重复性等因素对测量不确定度的贡献,分析结果给出水中CODcr测量的扩展不确定度为2.2%。
Analysis of measurement uncertainty for determining CODcr by titration method is described. The effects of apparatus, standard solutions, environmental condition and measurement reaptbility are analysed and evaluated. Expanded uncertainty of determination of CODcr in water is 2.2%.
出处
《环境技术》
2004年第3期21-23,26,共4页
Environmental Technology
关键词
测量不确定度
COD
水质分析
uncertainty of measurement
COD
water analysis
