3.2.2. Analysis of Hg species
The accuracy of the method proposed for MeHgþ speciationwas verified by analysis of BCR-463 (Tuna fish), DOLT-4 (Dogfish liver) and TORT-2 (Lobster hepatopancreas) CRMs. The values for each CRM are given in Table 2 and did not differ significantly at a 95% confidence level from certified values. The amount of iHg was also analysed in the BCR-463, DOLT-4 and TORT-2 CRMs. The recovery or each CRM was calculated by comparing the sum of MeHgþ and