Determination of Acephate Pesticide Residues in Chives by Photoacoustic Spectroscopy

Photoacoustic spectroscopy was applied for the rapid quantitative determination of acephate residues in chives. Different concentrations of acephate were used to collect photoacoustic spectroscopy. Spectral scanning range was 300 ~700 nm,and the modulation frequency was 5~200 Hz. The results showed that the linear range was 0.00~8.75 μg / m L with correlation coefficient of 0.998 1,and detection limit was 0.013 μg / m L. There was good reproducibility and no significant difference with high performance liquid chromatography method. This study can provided a rapid method for the analysis of pesticide residues in leaf vegetables.