Chemical Vapour Deposition of MWCNT on Silica Coated Fe₃O₄ and Use of Response Surface Methodology for Optimizing the Extraction of Organophosphorus Pesticides from Water

Table 2

The analytical performance of MSPE-LC-MS method for determination of OPPs.

OPPs	Regression equation	R^2	Linear range (μg/L)	LOD (μg/L)	LOQ (μg/L)	RSD (%, n=5)	EF
Azinphos methyl	y = 2864.6x + 14251	0.9977	10-200	0.004	0.013	5.7	721
Chlorpyrifos	y = 488.28x + 870.33	0.9976	10-200	0.026	0.085	3.6	541
Malathion	y = 2203x - 1349	0.9971	10-200	0.006	0.021	5.1	394
Parathion	y = 113.78x + 85.255	0.9955	10-200	0.150	0.499	4.3	431