Table 3.

Accuracy results for spiked oil matrix.

Analyte	Accuracy Levels	Targets (μg/L)	Average (μg/L)	% RSD	% Accuracy
Al	Low	7.5	7.52	2.1	100
	Mid	25	25.8	2.6	103
	High	40	41.4	2.1	103
Cr	Low	0.375	0.373	0.8	99
	Mid	1.25	1.25	0.8	100
	High	2	2.01	1.2	101
Fe	Low	1.88	1.94	6.8	103
	Mid	6.25	6.17	2.5	99
	High	10	10	1.6	100
Co	Low	0.375	0.372	0.8	99
	Mid	1.25	1.24	1.1	99
	High	2	2.01	1.4	101
Ni	Low	0.375	0.405	9.1	106
	Mid	1.25	1.26	2.2	100
	High	2	2.02	1.8	101
Cu	Low	0.75	0.74	1.5	96
	Mid	2.5	2.4	1.6	97
	High	4	4	1	98
Cd	Low	0.075	0.073	2.7	95
	Mid	0.25	0.246	1.8	98
	High	0.4	0.388	1.9	97
Sn	Low	0.15	0.162	2.1	96
	Mid	0.5	0.502	2.2	97
	High	0.8	0.802	2.8	98
Ba	Low	0.375	0.347	2.5	93
	Mid	1.25	1.21	1	97
	High	2	1.97	1	98
Pb	Low	0.375	0.369	1.8	99
	Mid	1.25	1.23	1.9	98
	High	2	1.99	2.1	99