Table 3.

Geometric mean values of arsenic and chemical species in urine of copper mill workers and control group

Parameter	N	Total As		AsB		AsIII		DMA		MMA		AsV
GM ± GSD (range)		µg/l As	µg/g creat.	µg/l As	µg/g creat.	µg/l As	µg/g creat.	µg/l As	µg/g creat.	µg/l As	µg/g creat.	µg/l As	µg/g creat.
Copper mill workers	149	37.8 ± 2.5 (2.8–511.6)	34.8 ± 2.1 (5.2–319.6)	5.5 ± 4.2 (0.2–370.6)	5.0 ± 3.6 (0.1–241.3)	4.0 ± 3.1 (0.1–37.7)	3.6 ± 2.8 (0.1–32.3)	15.6 ± 2.7 (0.4–112.3)	14.4 ± 2.3 (1.0–85.2)	3.7 ± 2.2 (0.4–26.0)	3.4 ± 2.1 0.3–17.3)	2.0 ± 3.4 (0.1–23.8)	1.8 ± 2.9 (0.1–50.4)
Control group	52	6.7 ± 3.4 (1.2–124.2)	5.4 ± 3.3 (0.7–73.9)	1.3 ± 5.6 (0.15–86.8)	1.0 ± 5.1 (0.4–73.1)	0.3 ± 2.7 (<LOD–1.7)	0.3 ± 2.8 (<LOD–1.09)	4.1 ± 2.8 (1.0–34.8)	3.4 ± 2.5 (1.5–23.5)	0.3 ± 2.3 (0.05–1.3)	0.3 ± 2.5 (0.11–1.2)	0.2 ± 2.4 (<LOD–0.8)	0.2 ± 2.5 (<LOD–0.6)
p		p < 0.05*	p < 0.05	p < 0.05	p < 0.05	p < 0.05	p < 0.05	p < 0.05	p < 0.05	p < 0.05	p < 0.05	p < 0.05	p < 0.05

* Statistical significance as compared to the controls