Fig. 2From: 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(a) Calibration curve for As(V) absorbed in the SPE filter disk obtained by fs-LA-ICP-MS and (b) RSD values estimated for the corresponding standards. The error bar in a represents the standard deviation value obtained from four repetitive measurements for each standardBack to article page