| 近红外光谱法同时测定废水中化学需氧量和生化需氧量 |
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| 引用本文： | 杨琼,胡蓉,张书然,杨季冬.近红外光谱法同时测定废水中化学需氧量和生化需氧量[J].理化检验(化学分册),2010(3). |
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| 作者姓名： | 杨琼 胡蓉 张书然 杨季冬 |
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| 作者单位： | 西南大学化学化工学院;长江师范学院化学及环境科学系; |
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| 基金项目： | 重庆市教委资助项目(No.KJ081306);;教育部春晖计划(Z2005-1-55001) |
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| 摘 要： | 采用120个废水样品的近红外透射光谱结合偏最小二乘法,分别建立了废水中化学需氧量和生化需氧量的预测模型,并对光谱数据预处理方法和异常值诊断进行了讨论。所建的废水中化学需氧量和生化需氧量的预测模型相关系数分别为0.9542和0.9652;模型的预测相对偏差分别为25.24mg·mL-1和12.13mg·mL-1;预测范围分别为28.4～528.0mg·mL-1和16.0～305.2mg·mL-1。通过对模型进行t-检验,在显著性水平大于0.05的条件下,其测定结果与标准方法的测定结果对比,两者无显著性差异。
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| 关 键 词： | 近红外光谱 化学需氧量 生化需氧量 废水 |
Simultaneous Determination of COD and BOD of Waste Water by NIRS |
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| YANG Qiong,HU Rong,ZHANG Shu-ran,YANG Ji-dong.Simultaneous Determination of COD and BOD of Waste Water by NIRS[J].Physical Testing and Chemical Analysis Part B:Chemical Analgsis,2010(3). |
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| Authors: | YANG Qiong HU Rong ZHANG Shu-ran YANG Ji-dong |
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| Institution: | 1.School of Chem.and Chem.Eng./a>;Southwest University/a>;Chongqing 400715/a>;China/a>;2.Dept.of Chemistry and Environics/a>;Changjiang Normal College/a>;Chongqing 408000/a>;China |
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| Abstract: | Based on the analytical data of 120 samples of waste water obtained by NIRS,and by using the partial least square method(PLS),predictive calibration models for determination of COD and BOD were established.Discussions on methods of treatment of the NIRS data and of determination of rejection divergent values were also given.Correlation coefficients found for the predictive models for COD and BOD determinations were 0.954 2 and 0.965 2 respectively.The ranges of prediction found for COD was from 28.4-528.0 m... |
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