Determination of the Novel Insecticide Flupyradifurone and Its Two Metabolites in Traditional Chinese Herbal Medicines Using Modified QuEChERS and High-Performance Liquid Chromatography-Tandem Mass Spectrometry

Table 1

Calibration information of target compounds in the range of 0.01–1 mg/L in different matrices.

Compound	Matrix	Calibration equation	R^2	ME (%)	LOQ (μg/kg)
DFA	Acetonitrile		0.9999	—	—
	a		0.9998	−17.9	100
	b		1	−45.0	100
	c		0.9997	−58.4	100
	d		0.9998	−50.6	100
6-CNA	Acetonitrile		0.9998	—	—
	a		0.9998	−20.0	100
	b		0.9999	12.3	100
	c		0.9998	20.0	100
	d		0.9999	15.8	100
FPO	Acetonitrile		0.9999	—	—
	a		0.9998	−23.3	10
	b		0.9998	8.5	10
	c		0.9998	−4.2	10
	d		0.9999	−1.1	10