A Green and Efficient Method for the Preconcentration and Determination of Gallic Acid, Bergenin, Quercitrin, and Embelin from Ardisia japonica Using Nononic Surfactant Genapol X-080 as the Extraction Solvent

Table 3

Recovery for four analytes in samples.

	Sample^1 (µg)	Spiked (µg)	Determined^2 (µg)	Recovery (%)	RSD (%)
Gallic acid	0.82	0.80	1.59	96.3	4.22
Bergenin	21.07	21.00	41.66	98.0	3.21
Quercitrin	1.39	1.40	2.77	98.6	1.28
Embelin	2.22	2.24	4.46	100	3.51

amounts of analytes in plant samples extracted by ultrasonic assisted micellar extraction and then preconcentrated by cloud point extraction. amounts of analytes in the spiked plant samples extracted by ultrasonic assisted micellar extraction and then preconcentrated by cloud point extraction.