Determination of 20 Neonicotinoid Insecticides and Their Metabolites in Infant Foods by a Modified QuEChERS Method Combined with HPLC-MS/MS

Table 2

Recovery rates of all target compounds spiked in three different matrices at two different concentrations (intraday n = 6).

Analytes	Vegetable and fruit cookies				Grain rice cereals				Vegetable purees
	1.0 μg·kg^−1		10 μg·kg^−1		1.0 μg·kg^−1		10 μg·kg^−1		1.0 μg·kg^−1		10 μg·kg^−1
	Recovery (%)	RSD (%)	Recovery (%)	RSD (%)	Recovery (%)	RSD (%)	Recovery (%)	RSD (%)	Recovery (%)	RSD (%)	Recovery (%)	RSD (%)
IMI	74	12.7	98	5.2	81	7.3	100	6.9	83	9.3	97	5.7
5-OH-IMI	79	6.5	78	12.2	78	8.6	86	9.7	80	11.9	86	9.7
6-CHL	75	7.3	104	3.9	69	13.1	86	11.6	71	12.7	84	6.8
NTP	76	11.2	97	7.5	78	10.1	87	8.2	81	8.5	83	8.5
ACE	64	8.4	90	3.5	80	6.8	82	9.5	84	6.1	81	9.5
DM-ACE	76	11.3	100	7.2	91	8.4	75	7.6	89	7.2	75	10.3
IM-1-4	77	13.3	83	4.5	73	9.7	72	14.6	81	11.3	77	10.0
THA	76	11.2	86	6.6	88	9.2	100	8.5	90	9.5	92	9.0
IMIT	70	11.9	94	6.5	74	10.2	105	9.9	80	11.1	101	6.3
CYC	80	10.6	93	7.4	84	10.1	104	6.8	91	6.3	101	8.2
THX	76	10.6	73	11.0	88	10.1	76	7.5	95	8.7	78	13.0
CLO	70	13.4	99	7.0	80	11.8	105	8.5	82	10.9	107	4.2
DM-CLO	76	11.7	101	5.2	89	5.1	72	11.2	92	10.9	72	14.1
DNT	84	8.9	73	8.5	72	10.2	73	6.8	78	9.4	77	10.6
DN	82	10.1	91	7.3	81	11.1	82	11.1	83	9.0	72	14.1
UF	64	14.6	88	10.0	77	8.1	99	7.6	84	8.9	101	5.2
SUL	79	8.1	76	7.3	79	4.5	73	12.2	75	11.0	89	6.5
FLO	73	13.3	97	5.6	85	8.7	98	9.4	94	6.3	83	6.3
TFNG	73	6.0	108	6.1	75	6.8	88	9.2	83	8.9	82	7.2
TFNA-AM	70	13.7	71	10.2	84	3.6	79	9.9	88	9.4	88	12.3