Rapid Trace Detection of Pesticide Residues on Tomato by Surface-Enhanced Raman Spectroscopy and Flexible Tapes

Table 1

Modeling results based on characteristic peak.

Pesticide	Characteristic peak band (cm^−1)	Calibration set			Prediction set
			RMSEC (ng·cm^−2)		RMSEP (ng·cm^−2)	RPD
Thiabendazole	760–800 LSSVM	0.972	31.944	0.960	36.103	5.004
	980–1020 LSSVM	0.995	13.253	0.887	56.138	3.111
Carbendazim	1200–1235 LSSVM	0.937	50.267	0.748	133.166	1.837
	1235–1280 LSSVM	0.993	17.498	0.933	68.922	3.504
Chlorpyrifos	580–630 LSSVM	0.985	25.668	0.864	92.847	2.507
	660–690 LSSVM	0.984	30.761	0.796	108.231	1.823