Feasibility of quantitative inorganic arsenic speciation at the parts-per-trillion level using solid phase extraction and femtosecond laser ablation inductively coupled plasma mass spectrometry

Journal of Analytical Science and Technology

Table 3 Determination of As(V) absorbed on the SPE filter disk by fs-LA-ICP-MS

Concentration of As(V) (μg/kg)	Concentration of DMA (μg/kg)	Results (μg/kg)	Recovery (%)
20.1	-	20.9 ± 2.7	103.8
62.3	-	66.3 ± 9.5	106.4
20.0¹	-	19.3 ± 2.4	96.4
19.9²	20.0	19.6 ± 1.3	98.3

¹10.0 μg/kg As(III), 10.0 μg/kg As(V), and hydrogen peroxide in the solution
²10.0 μg/kg As(III), 9.9 μg/kg As(V), 20.0 μg/kg DMA, and hydrogen peroxide in the solution