Back to Search
Start Over
Development of an easy portable procedure for on-site determination of mercury and methylmercury.
- Source :
-
Food chemistry [Food Chem] 2021 Apr 16; Vol. 342, pp. 128347. Date of Electronic Publication: 2020 Oct 12. - Publication Year :
- 2021
-
Abstract
- A portable measurement and speciation procedure for inorganic mercury (Hg <subscript>IN</subscript> ) and methylmercury (CH <subscript>3</subscript> Hg) was developed. A portable sample pretreatment was optimized to determine total mercury content. A new home-made sorbent (CYXAD, CHYPOS 101 modified Amberlite XAD), was prepared to separate Hg <subscript>IN</subscript> and CH <subscript>3</subscript> Hg. Mercury species were determined using square wave anodic stripping voltammetry (SW-ASV) with a solid gold electrode (SGE) and using a portable potentiostat. A certified reference material, five freeze-dried samples and three fresh samples were analysed with conventional voltammetric analyzer, after dissolution of the samples in microwave oven, and with a portable potentiostat after the mild eating procedure. The results obtained by SW-ASV were compared with those obtained using Direct Mercury Analyser (DMA). The quantification with the portable method is comparable to that obtained with the DMA. Retention tests showed the selectivity of CYXAD for Hg <subscript>IN</subscript> , its stability and the possibility to re-use the same aliquot of resin.<br /> (Copyright © 2020 Elsevier Ltd. All rights reserved.)
Details
- Language :
- English
- ISSN :
- 1873-7072
- Volume :
- 342
- Database :
- MEDLINE
- Journal :
- Food chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 33071191
- Full Text :
- https://doi.org/10.1016/j.foodchem.2020.128347