. 2014 Dec 10;88(6):807–818. doi: 10.1007/s00420-014-1009-7

Table 2.

Relationship between inorganic arsenic concentration in the air and different forms of the biomarkers in urine

As₂O₃ in air (µg/m³) GM ± GSD	Arsenic metabolites	N	Regression equation	Correlation coefficient
27.6 ± 4.9	As^III	149	y = 17.20 + 1.85x	r = 0.334*
	As^III + As^V	149	y = 17.99 + 1.13x	r = 0.300*
	As^III + As^V + MMA	149	y = 17.24 + 0.80x	r = 0.286*
	As^III + As^V + MMA + DMA	149	y = 19.82 + 0.24x	r = 0.188
	As total	149	y = 26.30 + 0.04x	r = −0.09

* Statistically significant at p < 0.05