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Table 2 Descriptive statistics of children’s blood and toenail metal levels (n = 20)

From: Toxic metal levels in children residing in a smelting craft village in Vietnam: a pilot biomonitoring study

Metala Mean ± stdev (μg/g) Geometric mean (μg/g) Minimum (μg/g) 95thpercentile (μg/g) Maximum (μg/g)
Pb-Bb 21.5 ± 16.2 17.3 6.7 62.3 62.3a
As-N 0.364 ± 0.312 0.289 0.109 1.09 1.46
Cd-N 0.286 ± 0.326 0.204 0.079 1.07 1.52
Cr-N 0.922 ± 0.554 0.809 0.321 2.09 2.87
Pb-N 157 ± 315 29.3 5.88 957 1120
Mn-N 7.41 ± 4.41 6.17 2.34 15.6 18.9
Hg-N 2.63 ± 7.07 1.08 0.328 17.2 32.6
  1. aB denotes blood metal levels. N denotes toenail metal levels.
  2. bBlood Pb units are expressed in μg/dL. Three BLLs which exceeded the 69 μg/dL maximum quantifiable level were excluded from the calculated descriptive statistics.