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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
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Environmental Health

ISSN: 1476-069X