环境行业标准方法测定COD的PLS改进  

Improvement on COD Determination of Chinese Environmental Standard Based on PLS

作　　者：黎国梁[1,2] 粟晖[1] 姚志湘[1] 童张法[2] 

机构地区：[1]广西工学院生物与化学工程系,广西柳州545006 [2]广西大学化学化工学院,广西南宁530004

出　　处：《环境科学与技术》2010年第1期132-134,共3页Environmental Science & Technology

基　　金：广西自然科学基金(桂科自0832064);广西教育厅桂教科研项目资助(200708MS067)

摘　　要：文章采用偏最小二乘法改进校正模型,在测定COD值的高量程和低量程范围内分别建立PLS模型,预测结果与GB法测定COD值的相对误差为4.47%和4.09%,具有较好的一致性。研究解决了环境行业标准快速消解分光光度法测定水质化学需氧量中直线拟合回归不确定性的问题。The calibration model was improved by using partial least squares （PLS）. PLS models were built for the high span and low span of COD determination respectively. The relative errors of predicted results were 4.47% and 4.09%, which were apparently in accordance with that of GB dichromate method. The uncertainly that resulted from linear fitting regression in fast digestion spectrophotometer method for detecting water quality of Chinese environmental standard was solved.

关 键 词：偏最小二乘法 环境行业标准 化学需氧量 校正模型改进 

分 类 号：X830.2[环境科学与工程—环境工程]