Table 3.

Analyte Accuracy of Quantification Using the Method From This Study

Elution order	Analyte	Spiked concentration, 2 μg/L (n = 6)		Spiked concentration, 10 μg/L (n = 6)		Spiked concentration, 100 μg/L (n = 6)
		Precision (RSD [%])	Trueness (recovery [%])	Precision (RSD [%])	Trueness (recovery [%])	Precision (RSD [%])	Trueness (recovery [%])
1	F–	NA	NA	20.3	47.5	2.2	99.5
2	Cl–	NA	NA	12.2	90.6	0.9	96.2
3	${NO}_2^{-}$	0.0	95.8	2.4	97.2	1.3	97.6
4	${NO}_3^{-}$	60.7	42.6	3.1	99.1	0.9	96.3
5	${SO}_4^{2-}$	NA	NA	7.3	92.6	1.5	101.0
6	Se (VI)	3.2	106.4	1.3	100.8	0.8	102.2
7	As (V)	0.0	102.2	0.0	101.7	0.7	107.9
8	${ClO}_4^{-}$	0.0	104.6	1.6	105.3	0.7	103.1
9	Cr (VI)	5.2	98.3	1.7	100.1	0.7	98.7

NA, not applicable (concentration below limit of detection); RSD, relative standard deviation.