Use of multivariate regression in spectrophotometric evaluation of chemical oxigen demand in samples of environmental relevance

Química Nova

Universidade Federal do Paraná, Curitiba¹  Nagata, Noemi¹  Universidade Estadual de Ponta Grossa, Ponta Grossa¹  Cordeiro, Gilcélia A.¹  Peralta-Zamora, Patricio¹ 

关键词: COD;    multivariate regression;    spectrophotometry.;   

DOI  :  10.1590/S0100-40422005000500021

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

In this work, a partial least squares regression routine was used to develop a multivariate calibration model to predict the chemical oxygen demand (COD) in substrates of environmental relevance (paper effluents and landfill leachates) from UV-Vis spectral data. The calibration models permit the fast determination of the COD with typical relative errors lower by 10% with respect to the conventional methodology.

【 授权许可】

Unknown