Synthesis and application of ion-imprinted polymer for the determination of mercury II in water samples

In this study, an innovative analytical methodology capable of selectively identifying and quantifying mercury contamination by the association of solid-phase extraction using ion-imprinted polymers as a sorbent phase and differential pulse anodic stripping voltammetry is proposed. To this end, the...

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Bibliographic Details
Published in:Environmental science and pollution research international 2019-07, Vol.26 (19), p.19588-19597
Main Authors: Francisco, Janaina E., Feiteira, Fernanda N., da Silva, Wanderson A., Pacheco, Wagner F.
Format: Article
Language:English
Subjects:
Anodic stripping
Aquatic Pollution
Atmospheric Protection/Air Quality Control/Air Pollution
Atomic absorption analysis
Atomic absorption spectroscopy
Atomic beam spectroscopy
Atomic force microscopy
Brazil
Cadmium
Cationic polymerization
Cations
Chemical synthesis
Confidence intervals
Contamination
Earth and Environmental Science
Ecotoxicology
Electrodes
Environment
Environmental Chemistry
Environmental Health
Environmental Monitoring - methods
Environmental science
Fresh Water - chemistry
Imprinted polymers
Infrared spectroscopy
Lagoons
Lead
Limit of Detection
Mercury
Mercury (metal)
Mercury Compounds - analysis
Microscopy
Molecular Imprinting
Organomercury Compounds - analysis
Polymers
Polymers - chemical synthesis
Polymers - chemistry
Recovery
Research Article
Rivers
Selectivity
Solid Phase Extraction
Solid phases
Sorbents
Spectral analysis
Spectrometry
Statistical analysis
Statistical methods
Waste Water Technology
Water analysis
Water Management
Water Pollutants, Chemical - analysis
Water Pollution Control
Water sampling
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Summary:In this study, an innovative analytical methodology capable of selectively identifying and quantifying mercury contamination by the association of solid-phase extraction using ion-imprinted polymers as a sorbent phase and differential pulse anodic stripping voltammetry is proposed. To this end, the ion-imprinted polymers were synthesized and characterized by infrared spectroscopy and atomic force microscopy. The sorption capacities and the selectivity of the ion-imprinted polymers were compared to the ones related to the non-imprinted ones. Next, the experimental parameters of this solid-phase extraction method (IIP-SPE) were evaluated univariately. The selectivity of this polymeric matrix against other cations (Cd II, Pb II, and Cu II) was also evaluated. Limits of detection (LOD) and quantification (LOQ) obtained for the here proposed methodology were 0.322 μg L −1 and 1.08 μg L −1 , respectively. Also, the precision of 4.0% was achieved. The method was finally applied to three water samples from different sources: for the Piratininga and Itaipu Lagoon waters, Hg II concentrations were below the LOQ and for Vargem River waters a concentration equal to 1.35 ± 0.07 mg L −1 was determined. These results were confirmed by recovery tests, resulting in a recovery of 96.2 ± 4.0%, and by comparison with flame atomic absorption spectrometry, resulting in statistical conformity between the two methods at 95% confidence level.
ISSN:0944-1344
1614-7499
DOI:10.1007/s11356-019-05178-y