MULTIVARIATE IMAGE ANALYSIS IN CHEMISTRY: pH MEASUREMENTS OF DRINKING WATER

被引：27

作者：

Damasceno, Deangelis ^{[1
]}

Toledo, Thiago G. ^{[2
]}

Godinho, Mariana S. ^{[2
]}

da Silva, Cassiano P. ^{[3
]}

de Oliveira, Sergio B. ^{[4
]}

de Oliveira, Anselmo E. ^{[2
]}

机构：

[1] Inst Fed Educ Ciencia & Tecnol, BR-76600000 Cidade De Goias, Go, Brazil

[2] Univ Fed Goias, Inst Quim, BR-74001970 Goiania, Go, Brazil

[3] AQUALIT, BR-74603030 Goiania, Go, Brazil

[4] Inst Fed Educ Ciencia & Tecnol, BR-74055110 Goiania, Go, Brazil

来源：

QUIMICA NOVA | 2015年 / 38卷 / 06期

关键词：

MIA; PLS; drinking water; digital image processing; pH;

D O I：

10.5935/0100-4042.20150082

中图分类号：

O6 [化学];

学科分类号：

0703 ;

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.

引用

页码：836 / 841

页数：6

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