Determination of Pyrethroids in Paris polyphylla Sample by High-Performance Liquid Chromatography Using Ultrasound-Assisted Magnetic Solid-Phase Extraction

Table 2

Mean concentrations (ng g⁻¹) of pyrethroids found in Paris polyphylla sample of Kunming, and recoveries (%) obtained after spiking the samples with FP, FV, DT, and BT at three concentration levels.

Sample

Spiked (ng g^−1)

Found (ng g^−1)

Recovery (%) ± SD

FP

FV

DT

BT

FP

FV

DT

BT

FP

FV

DT

BT

Paris polyphylla of Kunming

0

ND

ND

ND

ND

-

-

-

-

20

18.5

18.1

17.9

17.1

92.5±4.6

90.5±5.1

89.5±3.7

85.5±4.8

50

46.7

46.2

45.9

45.8

93.4±3.9

92.4±4.8

91.8±4. 5

91.6±5.6

100

101.5

95.5

92.7

95.9

101.5±4.1

95.5±4.5

92.7±5.2

95.9±4.1

Standard deviation (n = 3).