Lei Liu, Zhenglan Bian, Zuoren Dong, Fenghong Chu, Yuanhang Wang, Jinglin Li, Lu Zhang. Detection of Residual Organic Pesticides in Yam by Surface Enhanced Raman Spectroscopy[J]. Laser & Optoelectronics Progress, 2022, 59(4): 0417001
- Laser & Optoelectronics Progress
- Vol. 59, Issue 4, 0417001 (2022)
Fig. 1. Schematic diagram of Raman detection system
Fig. 2. Theoretically calculated Raman spectra of fenthion (curve a) and SERS of 10 mg·L-1 fenthion standard solution (curve b)
Fig. 3. Theoretically calculated Raman spectra of triazophos (curve a) and SERS of 10 mg·L-1 triazophos standard solution (curve b)
Fig. 4. Theoretically calculated Raman spectra of thiram (curve a) and SERS of 10 mg·L-1 thiram standard solution (curve b)
Fig. 5. SERS of 20 mg·L-1 pesticide, hydrochloric acid, and gold nanosol with different volumes. (a) Fenthion; (b) triazophos; (c) pesticide thiram
Fig. 6. SERS analysis of fenthion. (a) SERS of fenthion pesticide in yam; (b) linear relationship between concentration of fenthion and SERS intensity at 1050 cm-1
Fig. 7. SERS analysis of triazophos. (a) SERS of triazophos pesticide residue in yam; (b) linear relationship between triazophos concentration and SERS intensity at 999 cm-1
Fig. 8. SERS analysis of thiram pesticide. (a) SERS of thiram pesticide in yam; (b) linear relationship between concentration of thiram and SERS intensity at 1150 cm-1
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