Table 5: Analysis of standard reference materials (SRMs) by the Hydra C for Hg.

QC StandardsCertified Hg content
( g/g)
% recovery

SRM 3240 ephedra 0.0167 ± 0.0005101 ± 10
SRM tomato leaves0.0340 ± 0.004100 ± 2
SRM DOLT 3 dogfish liver3.37 ± 0.14101 ± 3