Development and Validation of a HPLC-UV Method for Simultaneous Determination of Five Sulfonylurea Herbicide Residues in Groundnut Oil Followed by Matrix Solid-Phase Dispersion

Table 1

Recoveries of the sulfonylurea herbicides from fortified groundnut oil control sample (n = 6).

Fortification concentration	Replication	Recovery (%)
in 𝜇g/mL		Nicosulfuron	Pyrazosulfuron ethyl	Metsulfuron methyl	Chlorsulfuron	Azimsulfuron
	R1	88	87	90	89	91
	R2	90	90	91	88	90
	R3	91	89	89	89	94
0.03	R4	89	88	93	90	93
	R5	89	88	90	91	91
	R6	90	90	90	93	90
	Mean	90	89	91	90	92
	RSD	1.17	1.36	1.52	1.99	1.80
	R1	95	93	95	93	96
	R2	98	96	93	93	93
	R3	96	94	96	94	92
0.3	R4	95	94	92	92	95
	R5	95	93	94	93	93
	R6	93	93	92	95	92
	Mean	95	94	94	93	94
	RSD	1.71	1.25	1.74	1.11	1.76