Method Validation and Measurement Uncertainty Estimation for Determination of Multiclass Pesticide Residues in Tomato by Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)

Table 2

Regression coefficient (R²), slope, matrix effect, method LOQ, and method range of the pesticides.

S. N.	Pesticide	Solvent standard calibration curve		Matrix-matched calibration curve		% matrix effect	Method LOQ (µg/kg)	Method range (µg/kg)
		R^2	Slope	R^2	Slope
1	3-Hydroxycarbofuran	0.999	177.591	0.999	187.511	6	5	5–400
2	Acephate	1.000	797.581	0.999	783.193	−2	5	5–400
3	Alachlor	0.999	458.473	0.999	438.277	−4	5	5–400
4	Aldicarb sulfone	0.999	663.776	0.999	657.814	−1	5	5–400
5	Aldicarb sulfoxide	0.999	383.474	0.999	388.445	1	5	5–400
6	Aldicarb	1.000	922.285	0.999	864.694	−6	5	5–400
7	Carbaryl	0.998	59.901	0.998	50.906	−15	10	10–800
8	Carbendazim	0.999	3505.077	0.999	3320.299	−5	5	5–400
9	Carbofuran	1.000	2655.585	0.999	2394.499	−10	5	5–400
10	Cyprodinil	1.000	714.738	0.999	692.753	−3	5	5–400
11	Dimethoate	0.999	1627.152	0.999	1570.99	−3	5	5–400
12	Ethoprophos	0.999	1167.623	0.998	1125.412	−4	5	5–400
13	Imazalil	1.000	561.124	0.999	492.480	−12	5	5–400
14	Imidacloprid	1.000	270.316	1.000	325.353	20	5	5–400
15	Kresoxim-methyl	0.999	851.743	0.999	808.224	−5	5	5–400
16	Metalaxyl	0.999	2456.334	0.999	2413.506	−2	5	5–400
17	Methidathion	1.000	894.615	0.999	908.447	2	5	5–400
18	Methiocarb	0.999	1140.993	0.999	1141.137	0	5	5–400
19	Methomyl	1.000	578.232	1.000	576.797	0	5	5–400
20	Monocrotophos	1.000	779.925	0.999	790.445	1	5	5–400
21	Oxamyl	1.000	756.761	0.999	772.839	2	5	5–400
22	Penconazole	0.999	1371.04	0.998	1279.036	−7	5	5–400
23	Propargite	0.999	4822.576	0.999	4457.998	−8	5	5–400
24	Propoxur	1.000	2128.077	0.999	1817.774	−15	5	5–400
25	Thiabendazole	1.000	1222.917	1.000	1209.514	−1	5	5–400
26	Trichlorfon	0.994	501.997	0.999	601.180	20	5	5–400

Matrix effects with negative values indicate signal suppression, whereas positive values indicate signal enhancement.