Sensing and Spectroscopy Lab

This study developed preliminary semi-quantitation methods for determine the carbendazim in astragalus using SERS (with 785 nm laser excitation).

For carbendazim, Raman shifts were observed at 624, 771, 1003, 1222, 1269, 1459, and 1514 cm-1.

The carbendazim residue in Astragalus was particularly identified at 771 and 1222 cm-1; the calibration curves could be developed by a linear equation (R2>0.97) or the Hill equation (R2>0.99).