MULTIVARIATE IMAGE ANALYSIS IN CHEMISTRY: pH MEASUREMENTS OF DRINKING WATER

被引：25
|
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.
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页码：836 / 841
页数：6
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