Accuracy of the method has been verified by analysing three certified reference materials
and different spiked samples. The values found for total Hg and MeHgþ for the CRMs did not differ
significantly from certified values at a 95% confidence level, and recoveries between 85% and 97% for
MeHgþ, based on spikes, were achieved. The detection limits (LODs) obtained were 0.001 mg Hg kg1 for
total mercury, 0.0003 mg Hg kg1 for MeHgþ and 0.0004 mg Hg kg1 for iHg