Preconcentration and spectrophotometric determination of mercury in water, food and hair samples through ionic-liquid induced micelle-mediated extraction | ||
| Bulletin of Faculty of Science, Zagazig University | ||
| Articles in Press, Accepted Manuscript, Available Online from 13 July 2020 PDF (364.16 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/bfszu.2020.31952.1031 | ||
| Authors | ||
| Ayman A Gouda* 1; Ragaa elsheikh2; Wafaa Hassan3; Sara H Ibrahim4; Amira Youssef4 | ||
| 1Chemistry Department, Faculty of Science, Zagazig University, Zagazig, Egypt | ||
| 2Chemistry Department, Faculty of Science, Zagazig University, Zagazig, 44519, Egypt. | ||
| 3Analytical Chemistry Department, Faculty of Pharmacy, Zagazig University, Zagazig, Egypt | ||
| 4Chemistry Department, Faculty of Science, Zagazig University, Zagazig, 44519, Egypt | ||
| Abstract | ||
| A new, eco-friendly, and rapid micelle-mediated preconcentration technique was described for trace mercury in water, food and hair samples perior to its spectrophotometric determination. The developed method depended on cloud point extraction supported with ionic liquid (IL-CPE) for extraction of mercury utilizing a nonionic surfactant (Triton X-114) and 1-hexadecyl-3-methylimidazolium chloride (C16MeImCl) ionic liquid, as an extracting phase in the presence of 5-benzyl-4-[4-methoxybenzylideneamino)-4H-1,2,4-triazole-3-thiol (BMBATT) as a new chelating agent at pH 7.0. The influence of varous analytical variables on improving the extraction performance was tested. In the range of 2.0-600 µg L−1, the calibration curve was linear with correlation coefficient of 0.9997. The detection limit and preconcentration factor were 0.4 µg L−1 and 100, respectively. The reliability and precision of the developed IL-CPE system as the relative standard deviation (RSD %) of 100 and 400 µg L−1 mercury were in the range 1.0 and 2.4%, respectively (n=10). The validity of the developed IL-CPE approach was confirmed by the analysis of certified reference materials (NIST-1641d mercury in natural water and NCS ZC81002B human hair). The applicability of proposed IL-CPE technique was demonstrated successfully by estimation of trace mercury in real water, food and hair samples. | ||
| Keywords | ||
| Mercury; CPE; Triton X-114; Water, food and hair samples | ||
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