Table 2.

Resolution factors (R_s) for different pH and flow rate (mL/min) combinations at various standard concentrations

pH/flow rate (mL/min)	Resolution factor (Rs)
	Concentration of mixed standard (µg/L)	AsV-MMA	MMA-AsIII	AsIII-DMA
4.1/1.0	5	5.1	4.3	4.4
	10	5.3	4.3	4.5
	20	5.3	4.5	4.5
	%RSD	2.2	2.5	1.3
4.1/1.2	5	5.5	4.2	5.1
	10	5.4	4.5	5.2
	20	5.4	4.3	5.0
	%RSD	1.0	4.1	2.0
4.3/1.0	5	4.9	4.9	4.7
	10	4.9	4.9	4.4
	20	4.6	4.8	4.5
	%RSD	4.0	1.1	3.9
4.3/1.2	5	4.1	4.8	4.3
	10	4.5	4.6	4.2
	20	4.4	4.7	4.1
	%RSD	5.3	1.7	1.8