基于阳离子型金属有机骨架混合基质膜的分散固相萃取-超高效液相色谱-串联质谱法测定水中7种苯氧羧酸类除草剂

纪雪峰, 李爽, 吴阁格, 赵琳, 马继平

Determination of seven phenoxy acid herbicides in water by dispersive solid phase extraction-ultra performance liquid chromatography-tandem mass spectrometry based on cationic metal-organic framework mixed matrix membrane

JI Xuefeng, LI Shuang, WU Gege, ZHAO Lin, MA Jiping

表3 7种苯氧羧酸类除草剂的回收率和精密度(n=5)

Table 3 Recoveries and precisions of the seven phenoxy acid herbicides (n=5)

Analyte	Spiked/ (μg/L)	Recovery/ %	RSDs/%		Analyte	Spiked/ (μg/L)	Recovery/ %	RSDs/%
Analyte	Spiked/ (μg/L)	Recovery/ %	Intra-day	Inter-day	Analyte	Spiked/ (μg/L)	Recovery/ %	Intra-day	Inter-day
4-CPA	0.005	80	5.7	4.2	2,4,5-T	0.005	88	4.7	6.0
	0.05	89	2.4	7.3		0.05	92	2.9	10.7
	0.2	92	1.4	5.6		0.2	89	4.7	6.0
PB	0.005	81	8.8	7.2	2,4-DB`	0.005	81	8.9	12.3
	0.05	93	4.4	6.0		0.05	85	7.9	12.6
	0.2	91	3.9	4.9		0.2	82	8.0	9.8
2,4-D	0.005	81	7.4	9.8	2,4,5-TP	0.005	102	9.4	10.8
	0.05	91	3.9	5.2		0.05	91	3.2	8.2
	0.2	89	3.1	4.6		0.2	88	3.1	8.2
MCPA	0.005	91	7.0	5.2
	0.05	92	3.0	7.3
	0.2	84	2.8	5.1