ANÁLISE MULTIVARIADA DE IMAGENS NA QUÍMICA: UM EXPERIMENTO PARA DETERMINAÇÃO DO pH DE ÁGUAS POTÁVEIS

Química Nova

Deangelis Damasceno¹  Thiago G. Toledo¹  Mariana S. Godinho¹  Cassiano P. Da Silva¹  Sérgio B. De Oliveira¹  Anselmo E. De Oliveira¹ 

关键词: MIA;    PLSdrinking water;    ;    digital image processing;    pH;   

DOI  :  10.5935/0100-4042.20150082

来源: SciELO

【 摘 要 】

A Multivariate Image Analysis (MIA) laboratory activity was proposed estimating pH of drinking water samples from its digital images after adding bromothymol blue as a pH indicator, and using the PLS multivariate calibration method. All computational work was done using GNU Octave free software. The MIA-PLS based approach exemplified with drinking water pH estimates is tailored to meet the needs of both students and researchers. MIA-PLS method was statically equivalent to the reference method using a conventional glass pH electrode. This lab activity combines analytical methodology, computing, and chemometrics.

【 授权许可】

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