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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Ziaei, Ehsan Mehdinia, Ali Jabbari, Ali |
| Description | Country affiliation: Iran Author Affiliation: Ziaei E ( Department of Chemistry, Faculty of Science, K. N. Toosi University of Technology, Tehran, Iran.); Mehdinia A ( Department of Marine Science, Iranian National Institute for Oceanography and Atmospheric Science, Tehran, Iran. Electronic address: mehdinia@inio.ac.ir.); Jabbari A ( Department of Chemistry, Faculty of Science, K. N. Toosi University of Technology, Tehran, Iran.) |
| Abstract | New mercapto-grafted graphene oxide-magnetic chitosan (GO-MC) has been developed as a novel biosorbent for the preconcentration and extraction of mercury ion from water samples. A facile and ecofriendly synthesis procedure was also developed for modification of GO-MC with 3-mercaptopropyltrimethoxysilane. The prepared nanocomposite material (mercapto/GO-MC) was characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR) and energy-dispersive X-ray spectroscopy (EDX). The mercury analysis was performed by continuous-flow cold vapor atomic absorption spectrometry. The parameters affecting the extraction and preconcentration processes were carried out. The optimum conditions were found to be 60mg of sorbent, pH of 6.5, 10min for adsorption time, 3mL of HCl (0.1mol L(-1))/thiourea (2% w/v) as the eluent and 250mL for breakthrough volume. An excellent linearity was achieved in the range of 0.12-80ng mL(-1) (R(2)=0.999) at a preconcentration factor of 80. The limit of detection and quantification were achieved as 0.06ng mL(-1) and 0.12ng mL(-1), respectively. A good repeatability was obtained with the relative standard deviation (RSD) of 4.7%. Furthermore, real water samples were analyzed and good recoveries were obtained from 95 to 100%. |
| File Format | HTM / HTML |
| ISSN | 00032670 |
| Volume Number | 850 |
| e-ISSN | 18734324 |
| Journal | Analytica Chimica Acta |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2014-11-19 |
| Publisher Place | Netherlands |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Analytical Discipline Chemistry Chitosan Analogs & Derivatives Environmental Monitoring Methods Graphite Chemistry Magnets Mercury Analysis Seawater Silanes Cations, Divalent Isolation & Purification Limit Of Detection Magnetic Phenomena Nanocomposites Oxides Solid Phase Extraction Water Evaluation Studies Journal Article Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Spectroscopy Environmental Chemistry Analytical Chemistry Biochemistry |
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