Liquid Chromatography-Tandem Mass Spectrometry Detection of Human and Veterinary Drugs and Pesticides in Surface Water

Table 3

LC-MS/MS acquisition parameters for analytes in negative mode.

Analytes	M.W.	R.T.^a (min)	Q1	Q3	DP^b	CE^c	EP^d	CXP^e	Dwell^f	Peak no.
Diethylstilbrstrol	268.35	6.31	267.3	237.1/251.1	−100	−37/-32	−10	−12	50	6
Estradiol	272.38	5.93	271.1	144.8/183.1	−84	−53/-53	−8	−10	50	4
Estrone	270.37	5.74	269.1	145/183.2	−83	−48/-45	−10	−10	50	2
Estriol	288.38	4.28	287.1	145.1/171	−85	−48/-55	−8	−12	50	1
Diethylstilbrstrol-d8	276.35	6.26	275.2	213/259.1	−50	−49/-36	−10	−12	10	5
Estradiol-d2	274.38	5.91	273.1	147/185	−89	−51/-52	−8	−10	10	3

The first MRM transitions were used for quantification. ^aRetention time. ^bDeclustering potential. ^cCollision energy. ^dEntrance potential. ^eCollision cell exit potential. ^fDwell time.