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

Table 3

Recovery rates of all target compounds spiked in three different matrices at two different concentrations (interday 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	72	12.7	100	6.4	78	9.8	95	7.8	83	9.2	94	8.3
5-OH-IMI	79	9.7	76	9.1	79	8.5	89	7.9	80	8.6	86	8.3
6-CHL	82	11.6	103	6.0	71	10.8	87	9.3	73	10.3	85	6.9
NTP	78	8.9	97	6.4	78	10.1	85	8.8	82	9.4	81	9.5
ACE	70	12.5	85	7.6	84	7.7	83	7.9	90	9.2	80	10.2
DM-ACE	77	9.5	106	6.0	90	7.6	78	9.2	93	8.1	75	9.1
IM-1-4	74	9.6	86	7.1	73	10.2	74	10.9	76	11.0	81	9.9
THA	77	10.3	86	7.5	89	9.8	99	7.0	94	7.5	96	7.7
IMIT	72	9.7	92	6.7	74	8.1	107	7.3	75	9.9	103	6.6
CYC	83	12.1	92	7.3	83	8.7	103	8.1	86	8.2	102	7.5
THX	75	9.1	75	9.4	84	8.4	78	9.2	90	8.8	80	9.5
CLO	69	11.3	98	6.7	81	10.0	103	7.2	87	9.3	103	7.3
DM-CLO	82	9.7	97	6.3	91	7.4	74	10.2	93	10.1	71	11.8
DNT	84	9.6	75	10.4	73	10.8	73	10.5	79	9.6	73	10.0
DN	80	11.0	94	6.3	80	8.7	81	10.6	86	8.3	74	10.4
UF	70	10.9	88	6.7	81	9.6	98	7.7	85	12.0	98	7.6
SUL	81	7.9	73	8.2	75	9.6	73	11.5	77	9.3	85	7.8
FLO	71	9.7	97	6.1	90	9.1	91	8.3	92	6.8	87	8.8
TFNG	73	9.3	102	6.2	75	8.8	85	9.4	80	10.6	83	9.0
TFNA-AM	74	10.4	73	8.2	86	7.2	82	9.1	87	8.3	84	9.6