ANÁLISE MULTIVARIADA DE IMAGENS NA QUÍMICA: UM EXPERIMENTO PARA DETERMINAÇÃO DO pH DE ÁGUAS POTÁVEIS
| Autor: | Deangelis Damasceno, Thiago G. Toledo, Mariana S. Godinho, Cassiano P. da Silva, Sérgio B. de Oliveira, Anselmo E. de Oliveira |
|---|---|
| Jazyk: | English<br />Spanish; Castilian<br />Portuguese |
| Rok vydání: | 2015 |
| Předmět: | |
| Zdroj: | Química Nova, Vol 38, Iss 6, Pp 836-841 (2015) |
| Druh dokumentu: | article |
| ISSN: | 1678-7064 0100-4042 |
| DOI: | 10.5935/0100-4042.20150082 |
| Popis: | 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. |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
|