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Table 3 The concentrations of urinary speciated inorganic arsenic metabolites (in µg/L) by work group

From: Assessment of Arsenic Exposure by Measurement of Urinary Speciated Inorganic Arsenic Metabolites in Workers in a Semiconductor Manufacturing Plant

  As 3+ As 5+ MMA DMA As 3++ As 5+ As 3++ As 5++MMA As 3++ As 5++MMA + DMA
Clean AM 1.87 0.95 3.60 48.70 2.82 6.42 55.12
(N = 8) GM 1.73 0.76 3.45 43.65 2.58 6.11 51.32
GSD 1.54 1.99 1.38 1.72 1.57 1.42 1.52
Med 2.03 0.68 3.40 48.84 2.61 6.71 54.55
Min 0.83 0.34 1.94 14.07 1.17 3.11 23.60
Max 2.63 2.52 5.37 88.30 5.14 9.53 93.15
Ion implantation AM 1.88 0.48 3.26 27.23 2.36 5.62 32.85
(N = 13) GM 1.74 0.39 3.08 23.17 2.23 5.34 28.92
GSD 1.51 2.11 1.42 1.76 1.43 1.40 1.66
Med 1.86 0.50 2.96 19.94 2.30 5.51 25.86
Min 0.76 0.10 1.84 12.28 1.21 3.25 16.35
Max 4.09 0.94 5.37 69.39 4.53 9.89 74.07
Office AM 1.26 0.27 2.47 30.47 1.53 4.00 34.47
(N = 14) GM 0.95 0.18 2.10 23.43 1.17 3.37 27.57
GSD 1.86 2.36 1.83 2.22 1.82 1.74 2.08
Med 0.74 0.10 2.27 28.35 1.07 3.27 31.70
Min 0.55 0.10 0.62 6.30 0.65 1.33 8.22
Max 6.51 1.28 6.50 60.18 7.80 14.30 65.15
All AM 1.63 0.50 3.02 33.43 2.13 5.15 38.59
(N = 35) GM 1.36 0.33 2.71 26.90 1.78 4.58 32.35
GSD 1.79 2.60 1.65 2.01 1.80 1.65 1.88
Med 1.14 0.41 2.88 29.62 1.70 4.67 36.93
Min 0.55 0.10 0.62 6.30 0.65 1.33 8.22
Max 6.51 2.52 6.50 88.30 7.80 14.30 93.15
P-value   <0.05 <0.05 <0.05 0.08 <0.05 <0.05 0.06
  1. As3+: trivalent arsenic, As5+: pentavalent arsenic, GM, Geometric mean; GSD, Geometric standard deviation, N, Number of subjects; MMA, Monomethylarsonic acid; DMA, Dimethylarsinic acid, P-value: probability by ANOVA test.