Open AccessCombined discrete nebulization and microextraction process for molybdenum determination by flame atomic absorption spectrometry (FAAS).
Author(s) -
Jenny A. Oviedo,
Amanda M. D. de Jesus,
Lucimar L. Fialho,
Edenir Rodrigues Pereira-Filho
Publication year - 2014
Publication title -
química nova
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.214
H-Index - 73
eISSN - 1678-7064
pISSN - 0100-4042
DOI - 10.5935/0100-4042.20140043
Subject(s) - molybdenum , atomic absorption spectroscopy , chromatography , mass spectrometry , materials science , chemistry , analytical chemistry (journal) , metallurgy , physics , quantum mechanics
Simple and sensitive procedures for the extraction/preconcentration of molybdenum based on vortex-assisted solidified floating organic drop microextraction (VA-SFODME) and cloud point combined with flame absorption atomic spectrometry (FAAS) and discrete nebulization were developed. The influence of the discrete nebulization on the sensitivity of the molybdenum preconcentration processes was studied. An injection volume of 200 µL resulted in a lower relative standard deviation with both preconcentration procedures. Enrichment factors of 31 and 67 and limits of detection of 25 and 5 µg L-1 were obtained for cloud point and VA-SFODME, respectively. The developed procedures were applied to the determination of Mo in mineral water and multivitamin samples