摘要
依据HJ/T 399-2007,选取含量接近法规限值的代表性样品,从基准物质溯源,探索测定水中化学需氧量的数学模型,对检测过程中引入的不确定度进行了分类和量化,系统全面地评定了各个不确定度分量,得到该方法的相对标准不确定度为0.033。
According to HJ/T 399-2007, using a representative sample in which the chemical oxygen demand was close to regulatory limit, the mathematical model for determination of the chemical oxygen demand in water was introduced by investigating from the standard material. The components of uncertainty in the detection process were classified and quantified, and were evaluated systematically. The uncertainty evaluation for determination of the chemical oxygen demand in water by spectrophotometric method was established.
出处
《福建分析测试》
CAS
2013年第3期21-25,共5页
Fujian Analysis & Testing
关键词
水质
化学需氧量
不确定度
紫外分光光度法
water quality, the chemical oxygen demand, uncertainty, spectrophotometric method
