Comparison of direct mercury analyzer and FIA-CV-AAS in determination of methylmercury in fish

8th Brazilian Congress on Metrology

Ulrich, J.C.^1 ; Hortellani, M.A.^1 ; Sarkis, J.E.S.^1 ; Nakatsubo, M.A.^1

Instituto de Pesquisas Energéticas e Nucleares - Ipen/CNEN-SP, São Paulo, Brazil^1

关键词: Certified reference materials;    Mercury analyzers;    Mercury species;    Methylmercury;    Reference material;    Relative errors;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/733/1/012022/pdf
DOI  :  10.1088/1742-6596/733/1/012022

来源: IOP

【 摘 要 】

Methylmercury (MeHg) has been determined in fish reference materials by direct mercury analyzer (DMA 80) and FIA-CV-AAS. In order to evaluate accuracy, certified reference materials (Fish protein, NRCC - Dorm 4 and fish material, Ipen - Dourada 1) were analyzed after extraction and separation of mercury species. Good agreement of the results have been obtained (relative error of the determination between the methods varied from 1.5% to 39%). The repeatability of the results varied from 4% to 26%.