Table 2. Relevant parameters of the GC-MS.

EEs	linearequation	r 2	Qualificationions (m/z)	Quantitationions (m/z)	Recovery	LODs (ng/L)
E1	Y = 10.6X−18.7	0.9972	342	257, 218, 327	ND	10
E2	Y = 7.65X−16.0	0.9961	285	416, 232, 401	82.3	5
E3	Y = 2.05X−10.6	0.9946	285	368, 232, 218	ND	5
EE2	Y = 6.04X+40.9	0.9984	345	311, 504, 386	ND	3
4-t-OP	Y = 96.5X−1060	0.9984	207	208, 278, 209	112	3
4-n-OP	Y = 37.4X−292	0.9944	179	278, 180, 263	85.3	40
NP	Y = 23.3X+308	0.9994	179	180, 372, 193	190	40
BPA	Y = 86.3X−751	0.9954	357	372, 207, 179	235	40
DEP	Y = 237X−241	1.0000	121	149, 205, 223	ND	40
DnBP	Y = 443X−1620	1.0000	149	167, 205, 223	ND	10
DEHP	Y = 202X−1820	1.0000	113	149, 167, 279	82.3	5
DNOP	Y = 159X−2090	0.9996	149	167, 261, 279	ND	5

LODs: limits of detection; ND: not detected.