Under request by Directorate General for Health and Consumers (DG SANCO) a collaborative trial, IMEP-115, was conducted in accordance with international protocols by the European Union Reference Laboratory for Heavy Metals in Feed and Food (EURL-HM), to determine the performance characteristics of an analytical method for the determination of methylmercury in seafood.
IMEP-115 was organised in support to the Commission Regulations 1881/2006 and 882/2004. The method is based on a double liquid-liquid extraction, first with an organic solvent and then with a cysteine solution. The final quantification is done with a direct mercury analyzer.
The repeatability relative standard deviation (RSDr) ranged from 3.9 to 12.3 % while the reproducibility relative standard deviation (RSDR) ranged from 8.4 to 24.8 %.The method demonstrates to have acceptable precision for all test materials, thus it fit for its intended analytical purpose.