Skip to main content

Table 2 Certified and found heavy metal concentrations (μg/g) in the reference materials

From: Selected toxic and essential heavy metals in impacted teeth and the surrounding mandibular bones of people exposed to heavy metals in the environment

Element

Certified value

Experimental value

Pb

1.335 ± 0.014

1.483 ± 0.024

Cd

0.011a

0.013 ± 0.010

Fe

99 ± 8

112 ± 14

Mn

1.16a

1.32 ± 0.36

Cr

0.03b

0.03 ± 0.010

Cu

0.8a

0.91 ± 0.07

Zn

147 ± 16

141 ± 12

  1. SRM 1486 bone meal (Cd, Cu, Fe, Mn, Pb, and Zn concentrations) and SRM 1400 bone ash (Cr concentrations); both reference materials were supplied by the US National Institute of Standards and Technology (Gaithersburg, MD, USA)
  2. anon-certified value
  3. bSRM 1400 bone ash; non-certified value
Back to article page

Journal of Occupational Medicine and Toxicology

ISSN: 1745-6673