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Table 5 Results from the analytical quality control

From: Mercury in human brain, blood, muscle and toenails in relation to exposure: an autopsy study

   Concentrations found  
Material Analyte a Mean SD N Method Recommended (or certified) values
LUTS-1; ng/g T-Hg 16.1 - 1 CVAFS 19.98 (0.20) b
  I-Hg 14.1 - 1 CVAFS -
  MeHg d 2.0 - 1 CVAFS 2.50 (0.21) b
LUTS-1; ng/g MeHg d 2.7 - 1 GC-ICPMS 2.50 (0.21) b
Seronorm 404107X; μg/L T-Hg 2.5 0.14 3 CVAFS 3 (2.2–3.3) c
  I-Hg 0.5 0.03 3 CVAFS -
  MeHg d 2.0 0.13 3 CVAFS -
Seronorm 404108; μg/L T-Hg 8.5 0.74 4 CVAFS 8 (6.7–8.4) c
  I-Hg 6.3 0.18 4 CVAFS -
  MeHg d 2.2 0.68 4 CVAFS -
LUTS-1; ng/g T-Hg 19.9 1.19 12 ICP-SFMS 19.98 (0.20) b
SRM 8414; ng/g T-Hg 5.5 0.63 8 ICP-SFMS 5 ± 3e
SRM 1577a; ng/g T-Hg 3.6 0.51 8 ICP-SFMS 4 ± 2e
  1. a) T-Hg: Total mercury concentration; I-Hg: Inorganic mercury concentration; MeHg: Methylmercury concentration
  2. b) Mean and one standard deviation, n = 4 for Hg and n = 5 for MeHg (Revised value by February 14, 2005; written personal communication, Dr. Ralph Sturgeon, National Research Council of Canada/Institute for National Measurement Standards). Values from the certificate, revised in August 1995, were 16.7 for T-Hg and 9.4 for MeHg with 95 percent confidence limits of 2.2 and 0.6, respectively.
  3. c) Recommended value (range)
  4. d) as Hg
  5. e) Estimated uncertainties