alexa Speciation of Cr (III) and Cr (VI) Ions via Fabric Phase Sorptive Extraction for their Quantification via HPLC with UV Detection
ISSN: 2157-7064

Journal of Chromatography & Separation Techniques
Open Access

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Research Article

Speciation of Cr (III) and Cr (VI) Ions via Fabric Phase Sorptive Extraction for their Quantification via HPLC with UV Detection

Heena1, Gaurav2, Susheela Rani1, Ashok Kumar Malik1, Abuzar Kabir3* and Kenneth G Furton3

1Department of Chemistry, Punjabi University, Patiala, Punjab, India

2Punjabi University College of Engineering and Management, Rampura Phul, Punjab, India

3Department of Chemistry and Biochemistry, International Forensic Research Institute, Florida International University, Miami, FL 33193, USA

*Corresponding Author:
Abuzar Kabir
International Forensic Research Institute
Department of Chemistry and Biochemistry
Florida International University
Miami, FL 33193, USA
Tel: +13053482396
E-mail: [email protected]

Received date: June 13, 2016; Accepted date: June 23, 2016; Published date: June 29, 2016

Citation: Heena, Gaurav, Rani S, Malik AK, Kabir A, et al. (2016) Speciation of Cr (III) and Cr (VI) Ions via Fabric Phase Sorptive Extraction for their Quantification via HPLC with UV Detection. J Chromatogr Sep Tech 7:327. doi:10.4172/2157- 7064.1000327

Copyright: © 2016 Heena, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

Simultaneous extraction of the morpholino dithiocarbamate (MDTC) chelates of Cr(III) and Cr(VI) ion from aqueous samples was accomplished by applying fabric phase sorptive extraction (FPSE) using a cellulose fabric modified with a sol-gel/polytetrahydrofuran composite. Following extraction, the chelates were separated by HPLC on a reverse phase C18 column with acetonitrile:water (65:35; v/v) as the mobile phase and UV detection at 320 nm. A single peak is found for the Cr(MDTC)3 but two peaks are caused by Cr(VI) due to the formation of the complexes Cr(MDTC)2(OMDTC) and Cr(MDTC)3 (where OMDTC stands for oxy-MDTC). The limits of detection for the Cr(III) and Cr(VI) complexes are 0.001 and 0.003 ng∙mL‾1, respectively. The method can be used for the determination of chromium species in aqueous samples and displays high precision, sensitivity and reliability.

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