Issue 19, 2014

A novel spectrofluorometric method for the determination of arsenic in human hair using Dy2O3-doped CeO2 nanoparticles

Abstract

This paper describes a simple and inexpensive method for the determination of arsenic in human hair samples based on spectrofluorometric detection. The applied Dy2O3-doped CeO2 (DDC) nanoparticles were synthesized using microwave-induced combustion technique and subjected to analytical samples containing As(V) species. At optimum conditions (pH 6, DDC concentration 3 mg L−1 and excitation/emission wavelengths 250 nm/352 nm), the fluorescence emission of DDC nanoparticles was diminished by increasing the As(V) concentration present in the medium. The co-existent ions present in hair were not interfered. A method for the speciation of As(III) and As(V) is also described. The method was validated using a well-known separation/spectrofluorometric method. There was no significant difference at the 95% confidence level between the results of the two methods. The proposed method is characterized by a wide analytical concentration range (5.0 × 10−8–1.0 × 10−5 M), a detection limit for As(V) of 1 × 10−8 mol L−1 and relative standard deviation of 1.4%. The recoveries for the spiked amounts of As(V) was found to be 93.3–104.0%.

Graphical abstract: A novel spectrofluorometric method for the determination of arsenic in human hair using Dy2O3-doped CeO2 nanoparticles

Article information

Article type
Paper
Submitted
26 Apr 2014
Accepted
15 Jul 2014
First published
16 Jul 2014

Analyst, 2014,139, 5007-5013

Author version available

A novel spectrofluorometric method for the determination of arsenic in human hair using Dy2O3-doped CeO2 nanoparticles

M. S. Hosseini and F. Belador, Analyst, 2014, 139, 5007 DOI: 10.1039/C4AN00746H

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