Speciation Analysis of Arsenic Compounds by HPLC-ICP-MS: Application for Human Serum and Urine

Table 4

Average concentrations of arsenic species in serum and urine.

Sample	Concentrations of As species (ng·mL^−1)
	AsB	As(III)	DMA	MMA	As(V)	Total iAs^a	Total As^b
Serum
Male (n = 7)	6.93 (1.63–19.8)	7.31 (1.5–22.0)	6.01 (0.35–11.23)	0.46 (0.4–0.8)	0.27 (0.27–0.27)	7.58 (1.77–22.3)	20.5 (6.4–26.5)
Female (n = 10)	6.64 (1.09–17.7)	7.20 (1.5–21.6)	10.0 (0.35–39.6)	1.46 (0.4–0.98)	0.80 (0.27–5.54)	8.00 (1.77–27.14)	24.9 (13.7–40.5)
Urine
Male (n = 7)	2.26 (0.36–4.28)	1.50 (1.5–1.50)	2.16 (0.47–3.80)	0.97 (0.15–1.52)	0.56 (0.09–1.3)	2.06 (1.59–2.8)	60.6 (22.7–99.6)
Female (n = 10)	1.85 (0.25–5.20)	1.50 (1.5–1.50)	1.77 (0.43–3.66)	0.91 (0.36–1.35)	0.34 (0.27–0.83)	1.84 (1.77–2.33)	46.0 (9.60–106)

^aTotal concentrations of inorganic arsenic species were defined by the sum of As(III) and As(V); ^btotal concentrations of arsenic were determined by microwave digestion and ICPMS measurement.