Determination of Polar Pesticides Based on a Modified QuPPe with Liquid Chromatography Coupled to Tandem Mass Spectrometry

Table 4

Average recoveries (R), repeatability and reproducibility (intraday and interday) of polar herbicides.

Pesticide	Intra-day				Inter-day				Measurement uncertainty (%)
	Recovery (%)	Repeatability (% RSD. n = 10)	Recovery (%)	Repeatability (% RSD. n = 10)	Recovery (%)	Reproducibility (% RSD. n = 10)	Recovery (%)	Reproducibility (% RSD. n = 10)
	0.01 (mg/kg)		0.05 (mg/kg)		0.01 (mg/kg)		0.05 (mg/kg)
Tomato
AMPA	114	4.83	117	13.84	99	2.96	87	19.31	46
AMPA N acetyl	115	1.21	119	1.98	110	7.89	93	19.06	44
Chlormequat chloride	114	1.98	115	0.89	93	15.96	107	6.01	36
Cyanuric acid	93	5.73	101	3.31	108	7.61	103	4.36	20
Ethephon	115	2.78	116	2.45	102	13.29	88	18.00	45
ETU	89	11.19	110	3.42	96	15.36	106	9.27	36
Fosetyl Al	118	1.98	117	2.29	109	8.89	98	19.82	45
Glufosinate ammonium	116	2.17	116	1.54	106	9.26	92	19.77	44
Glufosinate N acetyl	97	4.11	111	2.66	97	11.82	92	18.15	39
Glyphosate	104	9.22	100	7.55	102	11.09	95	17.74	37
Maleic hydrazine	101	6.53	116	2.08	99	14.50	102	17.41	42
Phosphonic acid	89	7.99	101	3.52	100	15.16	105	6.93	32
PTU	102	12.53	114	2.60	109	9.04	110	7.58	30
Wheat
AMPA	111	5.77	92	3.18	95	14.71	91	18.93	43
AMPA N acetyl	115	2.53	90	1.61	110	5.83	97	17.24	37
Chlormequat chloride	108	1.44	106	1.59	94	10.87	105	2.39	22
Cyanuric acid	94	8.50	99	3.52	10	9.44	105	4.51	22
Ethephon	116	2.51	103	1.50	104	12.16	92	19.61	43
ETU	92	7.89	113	3.52	96	14.77	105	7.78	34
Fosetyl Al	117	1.40	111	0.98	111	7.23	98	18.43	40
Glufosinate ammonium	116	2.21	108	1.08	106	9.32	95	17.50	38
Glufosinate N acetyl	114	4.06	95	1.33	101	12.83	90	17.79	41
Glyphosate	107	5.36	86	3.06	102	5.93	94	18.15	36
Maleic hydrazine	113	2.84	101	2.19	99	19.15	98	14.65	43
Phosphonic acid	91	8.29	97	3.40	100	13.23	101	9.69	30
PTU	99	10.12	115	2.91	93	9.53	107	7.34	29
Olive
AMPA	111	5.50	96	3.60	97	14.65	88	15.10	39
AMPA N acetyl	114	3.08	92	2.41	108	5.95	94	19.45	39
Chlormequat chloride	102	2.20	106	0.63	91	9.04	103	2.44	19
Cyanuric acid	108	6.05	102	2.98	103	11.53	104	7.15	26
Ethephon	113	4.12	104	1.47	102	13.88	89	18.73	42
ETU	113	4.95	114	2.29	100	16.43	106	10.17	39
Fosetyl Al	114	3.80	110	0.70	110	8.66	94	17.63	39
Glufosinate ammonium	115	2.85	112	1.06	106	9.82	93	17.95	40
Glufosinate N acetyl	107	3.42	94	4.31	99	15.41	89	17.06	41
Glyphosate	107	6.10	93	2.91	100	6.19	93	16.95	33
Maleic hydrazine	111	8.03	101	1.69	98	16.66	97	13.86	39
Phosphonic acid	99	8.64	101	4.43	105	14.29	101	6.28	26
PTU	94	9.38	115	2.12	98	11.02	106	6.94	30
Sunflower
AMPA	109	8.86	93	3.76	99	13.77	88	8.59	43
AMPA N acetyl	96	4.60	86	1.13	102	10.16	95	17.92	38
Chlormequat chloride	85	0.96	112	0.85	85	3.33	105	4.51	26
Cyanuric acid	105	6.85	112	4.24	102	12.09	107	7.85	30
Ethephon	96	3.99	102	1.69	99	15.41	91	19.89	43
ETU	112	3.62	116	2.59	100	13.34	106	9.04	35
Fosetyl Al	109	0.55	115	0.95	110	7.74	97	19.81	41
Glufosinate ammonium	111	1.22	109	0.71	104	9.90	94	16.98	37
Glufosinate N acetyl	115	3.35	95	3.61	99	15.62	89	18.16	45
Glyphosate	103	7.12	87	3.55	99	6.94	92	14.53	32
Maleic hydrazine	106	2.51	86	5.54	100	16.35	94	17.71	44
Phosphonic acid	94	8.18	101	3.74	99	12.77	103	6.60	27
PTU	95	9.27	113	3.82	99	10.24	109	8.45	29
Herbal tea
AMPA	103	8.01	91	3.73	96	12.33	88	19.22	41
AMPA N acetyl	88	2.64	88	2.05	105	11.97	91	18.68	42
Chlormequat chloride	86	1.16	109	0.54	89	2.33	105	3.40	21
Cyanuric acid	109	9.73	104	3.70	106	4.35	104	10.40	25
Ethephon	95	2.26	102	1.61	101	12.60	91	19.44	40
ETU	113	2.33	115	2.56	99	16.20	106	10.26	38
Fosetyl Al	115	1.15	113	0.95	111	7.73	99	19.78	42
Glufosinate ammonium	108	1.35	109	0.85	105	7.84	91	18.69	37
Glufosinate N acetyl	115	2.98	97	1.82	101	13.25	90	17.77	41
Glyphosate	95	3.96	87	3.11	99	8.66	93	17.83	37
Maleic hydrazine	109	5.02	98	3.31	101	14.61	96	14.56	36
Phosphonic acid	100	10.49	98	3.08	101	10.35	98	7.18	26
PTU	98	13.72	114	1.03	101	8.96	108	7.79	29