Recruiting chemical grafting method for surface modification of stainless steel to fabricate a selective sorbent for solid phase microextraction of mercury metal ion
Goudarzi S. Fahimirad B. Rajabi M. Baigenzhenov O. Hosseini-Bandegharaei A.
January 2023Springer Science and Business Media Deutschland GmbH
Environmental Science and Pollution Research
2023#30Issue 23121 - 3132 pp.
Keeping selectiveness and efficiency in view with solid-phase microextraction (SPME) of metal ions, this work was aimed at synthesis of a novel modified sorbent on a stainless-steel surface to fabricate a selective and efficient fiber for SPME of mercury ions from real food and biological samples. After the confirmation of sorbent structure grafted on the stainless-steel surface, by different techniques, the synthesized fiber was utilized for extraction and preconcentration of mercury before its measurement by an inductively coupled plasma-optical emission spectroscopy (ICP-OES). For optimizing the efficiency, the influences of various factors on the extraction of Hg (II) ion were scrutinized. The optimized values used for extraction were pH 7.0, adsorption time 8 min, desorption time 5 min, 5 mL of eluent solvent containing nitric acid with concentration of 0.5 mol L−1, and stirring rate of 300 rpm. Underneath optimum condition, the relative standard deviation for 30 extractions, done by one synthesized fiber, was calculated to be 2.89% and for five extractions, done by 5 synthesized fibers, was calculated to be 1.78%. The high performance of the synthesized fiber was checked with high recoveries obtained from 30 successive sorption–desorption cycles, using a unique synthesized fiber. Finally, the suggested procedure was triumphally exploited for extraction and pre-concentration of Hg (II) ion in real food and biological samples. Graphical abstract: [Figure not available: see fulltext.].
Inductively coupled plasma optical emission spectroscopy , Mercury , Solid-phase microextraction , Stainless steel
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Department of Chemistry, Semnan University, Semnan, 35195-363, Iran
Department of Metallurgical Sciences, Satbayev University, 22a Satbaev str., Almaty, 050013, Kazakhstan
Department of Chemistry
Department of Metallurgical Sciences
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