Optimized Multiresidue Analysis of Organic Contaminants of Priority Concern in a Daily Consumed Fish (Grass Carp)

Table 2

Comparison of recoveries and relative standard deviation of PAHs, OCPs, PBDEs, and PCBs by SPE cartridge (SC) cleanup and chromatography column (CC) cleanup.

	PAHs		OCPs		PBDEs		PCBs
SPE cartridge cleanup
	RV, %	RSD, %	RV, %	RSD, %	RV, %	RSD, %	RV, %	RSD, %
AM	98.6	7.4	87.8	3.7	103.6	3.2	87.8	4.5
SD	19.4	8.2	12.0	4.1	13.5	2.6	10.4	1.8
CV	0.196	1.114	0.137	1.086	0.131	0.811	0.119	0.392
MD	95.3	3.6	87.4	2.3	100.3	2.5	85.6	4.4
Chromatography column cleanup
	RV, %	RSD, %	RV, %	RSD, %	RV, %	RSD, %	RV, %	RSD, %
AM	95.1	6.9	95.7	9.9	82.7	7.9	91.1	12.5
SD	14.3	7.5	6.4	16.9	13.6	6.6	13.6	8.8
CV	0.150	1.094	0.067	1.708	0.164	0.843	0.149	0.701
MD	94.9	4.0	96.1	5.8	87.9	7.5	91.6	9.8
ANOVA test between SC and CC
p	0.394		0.004		0.001		0.244
The number of the cleanup methods with the better recovery as indicated by IST
	Number (ratio, %)		Number (ratio, %)		Number (ratio, %)		Number (ratio, %)
	18 (60.0)		15 (57.7)		5 (33.3)		24 (68.6)
	5 (16.7)		0 (0.0)		9 (60.0)		2 (5.7)
	7 (23.3)		11 (42.3)		1 (6.7)		9 (25.7)

Notes: AM, SD, CV, and MD denoted the arithmetic mean, the standard deviation, the coefficient of variation, and the median. In “QJ” column in Table S10, “” denoted that there were no significant differences between recoveries of the two cleanup methods; “CC” denoted that chromatography column cleanup method was better; “SC” denoted that SPE cartridge cleanup method was better. For one chemical group, , , and denoted the number of “,” the number of “CC,” and the number of “SC.” Values in the bracket denoted ratios of , , and to total number of chemicals in specific chemical group.