Cloud point-dispersive liquid-liquid microextraction for preconcentration and determination of mercury in wastewater samples by methylsulfanyl thiophenol material

Volume 3, Issue 01, Pages 63-71, Mar 2020 *** Field: Analytical Chemistry

  • Azwan Morni International Institute of Theoretical and Computational Chemistry, India
  • Seyed Mojtaba Mostafavi *© Iranian-Australian Community of Science
DOI: https://doi.org/10.24200/amecj.v3.i01.97
Keywords: Mercury, Wastewaters, Methylsulfanyl thiophenol, Ionic liquid, Cloud point dispersive liquid-liquid microextraction

Abstract

A efficient method based on 4-methylsulfanyl thiophenol (MSTP, C7H8S2) and ionic liquid    ([BMIM][PF6]) was used for mercury (Hg) separation and preconcentration from wastewater of  petrochemical industries. The 0.01 mile molar of MSTP, 80 mg of [BMIM][PF6] was diluted with  0.2 mL of ethanol (ET 98%). The mixture was injected to 10 mL of wastewater samples, shacked by ultrasonic bath for 5.0 min and cloudy solution was achieved by ionic liquid micelles  at pH=7.0. The  mercury ions was complexed with MSTP and extracted on micelles (IL/ET) by cloud point dispersive liquid-liquid microextraction (CP-DLLME) at 50oC before determined by cold vapor atomic absorption spectrometry (CV-AAS). The favorite extraction for mercury with low LOD (15 ng L-1) and good linear rages (0.05- 6.2 μg L-1) was achieved (RSD<5%). The main parameters such as, pH, sample volumes, amount of MSTP, amount of IL and ultra-sonic time were optimized. 

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Published
2020-03-30
How to Cite
Morni, A., & Mostafavi *©S. M. (2020). Cloud point-dispersive liquid-liquid microextraction for preconcentration and determination of mercury in wastewater samples by methylsulfanyl thiophenol material. Analytical Methods in Environmental Chemistry Journal, 3(01), 63-71. https://doi.org/10.24200/amecj.v3.i01.97
Issue
Vol 3 No 01 (2020): Issue No. One
Section
Original Article

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