Simultaneous spectrophotometric determination of Ga(III) and Tl(III) by using genetic algorithm based on wavelength selection-partial least squares regression

Autor:	Jahan B. Ghasemi, Javad Zolgharnein, Neda Asanjarani, Gholamhassan Azimi
Rok vydání:	2015
Předmět:	Analyte Wavelength Chemistry Metal ions in aqueous solution Genetic algorithm Partial least squares regression Analytical chemistry Sensitivity (control systems) Selectivity Selection (genetic algorithm) Analytical Chemistry
Zdroj:	Journal of Analytical Chemistry. 70:148-153
ISSN:	1608-3199 1061-9348
DOI:	10.1134/s1061934815020070
Popis:	A method for simultaneous spectrophotometric determination of Ga(III) and Tl(III) based on their complexes with 4-(2-pyridylazo)-resorcinol (PAR) is proposed. The results of simultaneous determinations in mixture were obtained by using partial least squares regression (PLS) and genetic algorithm-partial least squares regression (GA-PLS). Moreover, the comparison between them has been conducted. The relative errors of prediction for Ga(III) and Tl(III) were calculated to be 4.98, 8.84 from PLS and 4.83, 4.82 due to running GA-PLS respectively. The pH effect on the sensitivity and selectivity was studied according to the net analyte signal (NAS) approach. The pH was selected at 5.5 as the optimum value to compromise the sensitivity and selectivity of these metal ions. As a consequence, the GA-PLS shows better prediction ability over full spectrum of PLS.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::07fcfd8784df2e5fd516c11cd3bfedbd https://doi.org/10.1134/s1061934815020070 Zobrazit plný text záznamu Plný text ve formátu PDF