Rapid Residue Analysis of Phthalanilic Acid in Cereals and Oilseed Rape by High-Performance Liquid Chromatography Coupled to Tandem Mass Spectrometry

Table 2

Performance characteristics of the method for phthalanilic acid in cereals, wheat straw, and rapeseeds.

Crops	Spiked level(mg·kg^−1)	Average recovery(%) (n = 5)	RSD(%)	Matrix		Acetonitrile		LOQ(mg·kg^−1)
				Regression equation	r	Regressionequation	r
Wheat grains	0.01	103	6	Y = 15020 X + 1115	r = 0.9992	Y = 20487 X + 1638	r = 0.9990	0.01
	0.1	98	1
	1	92	3
Wheat straw	0.05	113	3	Y = 6214 X + 98	r = 0.9990			0.05
	0.5	100	1
	5	96	4
Rapeseeds	0.02	88	4	Y = 10170 X + 249	r = 0.9999	Y = 20271 X + 1594	r = 0.9990	0.02
	0.2	91	2
	2	93	3
Corn	0.01	93	5	Y = 45569 X + 2023	r = 0.9997			0.01
	0.1	95	4
	1	95	3
Rice	0.01	90	1	Y = 41500 X + 1399	r = 0.9997	Y = 48582 X + 10592	r = 0.9959	0.01
	0.1	107	2
	1	103	2
Millet	0.01	93	3	Y = 37143 X + 2097	r = 0.9994			0.01
	0.1	106	1
	1	94	1