表4.

实际水样中7种苯氧羧酸类除草剂的分析结果(n=3)

Analyte	Spiked/(μg/L)	Tap water				Reservoir water
		Found/(μg/L)	Recovery/%	RSD/%		Found/(μg/L)	Recovery/%	RSD/%
4-CPA	0	ND				ND
	0.01	0.008	80	3.5		0.007	72	4.1
	0.05	0.043	86	0.6		0.046	92	2.6
	0.2	0.178	89	8.3		0.171	86	4.9
PB	0	ND				ND
	0.01	0.009	90	5.5		0.008	80	2.4
	0.05	0.044	88	2.3		0.045	90	4.1
	0.2	0.182	91	2.5		0.179	90	6.5
2,4-D	0	ND				ND
	0.01	0.008	80	11.3		0.009	90	7.6
	0.05	0.042	84	3.1		0.047	94	2.9
	0.2	0.179	90	2.3		0.168	84	1.5
MCPA	0	ND				ND
	0.01	0.008	80	9.5		0.009	90	5.4
	0.05	0.043	86	2.8		0.043	86	3.3
	0.2	0.167	84	4.4		0.158	79	4.2
2,4,5-T	0	ND				ND
	0.01	0.008	80	8.1		0.008	80	11.5
	0.05	0.046	92	2.4		0.045	90	3.2
	0.2	0.175	88	4.6		0.178	89	5.1
2,4-DB`	0	ND				ND
	0.01	0.010	102	6.2		0.011	110	7.5
	0.05	0.045	90	6.4		0.063	126	10.4
	0.2	0.166	83	9.6		0.214	107	6.6
2,4,5-TP	0	ND				0.004
	0.01	0.009	90	0.7		0.013	90	11.0
	0.05	0.047	94	8.1		0.047	86	9.1
	0.2	0.176	88	3.3		0.153	75	6.0

ND: not detected.