Application of solvent-assisted dispersive solid phase extraction combined with flame atomic absorption spectroscopy for the determination of trace amounts of Cadmium

AUTHORS

Raziyeh Khorasani 1 , Kavoos Dindarloo 1 , Mohsen Heidari 1 , Mohammad Behbahani 2 , Omid Rahmanian 1 , *

1 Department of Environmental Health,Social Determinants in Health Promotion Research Center,Hormozgan University of Medical Sciences, Bandar Abbas, Iran.

2 Department of Environmental Health , Kermanshah University of Medical Sciences, Kermanshah, Iran.

How to Cite: Khorasani R , Dindarloo K, Heidari M , Behbahani M , Rahmanian O. Application of solvent-assisted dispersive solid phase extraction combined with flame atomic absorption spectroscopy for the determination of trace amounts of Cadmium, Hormozgan Med J. 2017 ; 20(6):e87347. doi: 10.18869/acadpub.hmj.20.6.383.

ARTICLE INFORMATION

Hormozgan Medical Journal: 20 (6); e87347
Published Online: March 05, 2017
Article Type: Research Article
Received: January 01, 2017
Accepted: March 05, 2017
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Abstract

Introduction: Cadmium is recognized worldwide as a toxic metal. In this study, Solvent-
Assisted Dispersive Solid Phase Extraction (SA-DSPE) combined with Flame Atomic
Absorption Spectrometry (FAAS), was used for determination of trace amounts of
Cadmium (Cd-II)) in drinking water samples.
Methods: In this approach, the dispersion of the sorbent was achieved by injecting a
mixture of solution of the sorbent and dispersive solvent into the aqueous sample. Thereby,
a cloudy solution formed. The cloudy solution was centrifuged and the enriched Cd (II) in
the sediment phase dissolved in ethanol and determined by FAAS. Some effective
parameters for SA-DSPE, such as: pH, concentration of chelating agent, type and amount
of sorbent, type and volume of dispersive solvent and salt effect were investigated and
optimized.
Results: Under the optimized conditions, the detection limit for Cd (II) ions was 0.6 ng
mL-1. Calibration curve was made in the range of 1-300 ng mL-1, obtaining good linearity
(R2=0.9930). Finally, SA-DSPE was successfully applied for trace determination of Cd
(II) in drinking water samples.
Conclusion: SA-DSPE is environment friendly and strongly against high contents of salt.
The other benefits of the method are its simplicity, ease of operation, good precision,
short extraction time, low cost, and a good enrichment factor.

Keywords

Cadmium Atomic Absorption Spectrometry Drinking Water

© 2017, Hormozgan Medical Journal. This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/) which permits copy and redistribute the material just in noncommercial usages, provided the original work is properly cited.

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