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Ultrasound-assisted emulsification of solidified floating organic drop microextraction for the pre-concentration of cadmium in food and water samples

Abstract

In this work, a procedure for pre-concentration and determination of cadmium in food samples by FAAS was developed, based on ultrasound assisted emulsification microextraction with solidification of floating organic droplet (USAEME-SFO) using 1- (2-thiazolylazo) -p cresol (TAC) as complexing reagent. The analyte has been determined by Flame Atomic Absortion Spectrometry (FAAS). The limit of detection and quantification were 0.6 µg L-1and 2.0 µg L-1, respectively. The methods precision was expressed as relative standard deviation of 3.0% (10 µg L-1). The accuracy was evaluated from the analysis of certified reference samples of tomato leaves (SRM 1573a), rice flour (NIES 10b), and (Drinking Water Standard APS 1071) in addition the recovery test results, which ranged from 90 to 100%. The procedure was applied for the determination of cadmium in corn flour samples, beans, cabbage and mineral water in which the analyte concentration ranged from 0.30 to 2.10 µg g-1 for food samples and from 0.3 to 0.46 µg L-1 for water samples.

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Publication details

The article was received on 25 Jun 2018, accepted on 07 Aug 2018 and first published on 08 Aug 2018


Article type: Paper
DOI: 10.1039/C8AY01401A
Citation: Anal. Methods, 2018, Accepted Manuscript
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    Ultrasound-assisted emulsification of solidified floating organic drop microextraction for the pre-concentration of cadmium in food and water samples

    F. D. S. Dias, L. A. Meira, J. Barreto and L. Peixoto, Anal. Methods, 2018, Accepted Manuscript , DOI: 10.1039/C8AY01401A

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