Analytical quality control was performed by using Certified Reference
Materials (CRMs):
- BCR 060 — Aquatic plant (Lagarosiphon major); 0.34 ± 0.04 mg kg−1
(total Hg)
- CRM 021 — USEPA certified soil reference; 4.7 ± 0.4 mg kg−1
(total Hg)
- TORT2— Lobster Hepatopancreas; 0.27 ± 0.06 mg kg−1 (total Hg).
The CRMs were analyzed every day prior to the beginning of the
analysis and repeated at the end of the day. All percentages of recovery
for THg were within the range of 87–113% (n = 19).