Abstract
In this research, the metal–organic framework (MOF) as a solid phase was used for separation mercury [Hg (II)] inhuman serum sample by ultrasound assisted- Ionic Liquid-solid phase microextraction procedure (USA- IL-μ-SPE). Mercury extracted from serum sample by [Zn2(BDC)2(DABCO)]n as MOF at pH=7.8. Hydrophobic ionic liquid ([BMIM] [PF6]) was used as solvent trap for Hg-MOF-NC from the sample solution. The phase of Hg-MOF-NC was back extracted by 0.5 mL of HNO3 (0.2 mol L-1) and finally mercury concentration determined with cold vapor-atomic absorption spectrometry (CV-AAS) after dilution with 0.5 mL of DW. Under the optimal conditions, the linear range, limit of detection and preconcentration factor were obtained 0.02–5.5 µg L−1, 6.5 ng L−1 and 9.8 for serum samples, respectively (%RSD<5%). The validation of methodology was confirmed by standard reference materials (SRM).
Highlights
Today, metal-organic frameworks have received considerable attention as porous coordination polymers (PCPs) and porous hybrid organic– inorganic materials because of their unique properties [1,2]
Zn2(BDC)2(DABCO) metal–organic framework (MOF) was synthesized by solvothermal method for mercury absorption from serum and standard solution with cold vaporatomic absorption spectrometry (CV-AAS) by USA- IL-μ-SPE procedure
Fourier transforms infrared spectroscopy for MOF The Fourier transform infrared spectroscopy (FTIR) spectra of MOF were recorded in the range of 400–4000 cm-1 with KBr pellets by fourier transforms infrared spectroscopy (Fig. 2)
Summary
Metal-organic frameworks have received considerable attention as porous coordination polymers (PCPs) and porous hybrid organic– inorganic materials because of their unique properties [1,2]. The absorbent materials have been studied for different species such as nitrobenzene [24,25,26], phenol [27], p-xylene hydrocarbon [28], dye [2932], heavy metal [33,34], humic acid [35], and nitrate [36,37] from the waste water. Mercury is a chemical element and heavy metal with very toxic effect.
Sign-in/Register to view highlights & summary 
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Analytical Methods in Environmental Chemistry Journal
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
