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

Table 2 The concentrations of urinary speciated inorganic arsenic metabolites by smoking status and seafood intake

		As ³⁺	As ⁵⁺	MMA	DMA	As ³⁺+ As ⁵⁺	As ³⁺+ As ⁵⁺+MMA	As ³⁺+ As ⁵⁺+MMA + DMA
No smoking	AM	1.67	0.58	2.96	33.72	2.25	5.21	38.93
(N = 22)	GM	1.33	0.37	2.62	26.92	1.80	4.51	32.48
	GSD	1.90	2.74	1.71	2.05	1.92	1.74	1.91
	Med	1.17	0.45	2.89	29.45	1.53	4.57	33.85
	Min	0.62	0.10	0.62	6.30	0.72	1.33	8.22
	Max	6.51	2.52	6.50	88.30	7.80	14.30	93.15
Smoking	AM	1.56	0.37	3.13	32.94	1.94	5.07	38.01
(N = 13)	GM	1.70	0.27	2.85	26.86	1.76	4.69	32.12
	GSD	1.62	2.38	1.59	2.00	1.64	1.52	1.88
	Med	1.70	0.35	2.59	29.62	2.21	4.67	36.93
	Min	0.55	0.10	1.27	10.27	0.65	2.70	13.56
	Max	2.49	0.94	5.37	69.39	2.83	7.94	74.07
P-value		0.75	0.40	0.63	0.99	0.92	0.83	0.96
No seafood	AM	1.82	0.41	3.23	29.23	2.23	5.46	34.69
(N = 22)	GM	1.50	0.29	2.93	23.98	1.87	4.89	29.41
	GSD	1.83	2.40	1.59	1.95	1.78	1.61	1.85
	Med	1.45	0.35	2.93	25.73	1.62	4.97	32.16
	Min	0.65	0.10	1.08	6.30	0.84	1.92	8.22
	Max	6.51	1.28	6.50	60.18	7.80	14.30	65.15
Seafood	AM	1.30	0.66	2.68	40.54	1.96	4.64	45.18
(N = 13)	GM	1.16	0.40	2.37	32.65	1.64	4.09	37.99
	GSD	1.67	2.96	1.74	2.08	1.87	1.71	1.91
	Med	1.14	0.50	2.48	39.31	1.94	4.07	40.65
	Min	0.55	0.10	0.62	8.88	0.65	1.33	10.96
	Max	2.62	2.52	5.37	88.30	5.14	9.53	93.15
P-value		0.20	0.33	0.23	0.21	0.52	0.31	0.25

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 t-test.

ISSN: 2052-4374