Shuai YAN, Yong-yu LI, Yan-kun PENG, Ya-chao LIU, Dong-hai HAN. A Method for Correcting Nitrofurantoin Raman Signal in Honey Based on Internal Standard of Substrate[J]. Spectroscopy and Spectral Analysis, 2021, 41(2): 546
- Spectroscopy and Spectral Analysis
- Vol. 41, Issue 2, 546 (2021)
Fig. 1. Raman spectrum of nitrofurantoin standard products (a) and honey SERS spectrum (b) containing nitrofurantoin
Fig. 2. Surface enhanced Raman spectra of honey containing nitrofurantoin after baseline deduction
Fig. 3. Raw spectra (a) of 20 mg·kg-1 nitrofurantoin honey and spectra (b) calibrated with Raman characteristic peaks at 739 cm-1
Fig. 4. Linear relationship between nitrofurantoin concentration and Raman strength at 1 353 cm-1 (a) and 1 612 cm-1 (b) before and after internal standard calibration
Fig. 5. Surface enhanced Raman spectra of nitrofurantoin honey
(a): Before correction; (b): After correction
(a): Before correction; (b): After correction
Fig. 6. Comparison of validation set models before and after correction of 1 612 cm-1
(a): Calibration set; (b): Verification set
(a): Calibration set; (b): Verification set
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Table 1. Quantitative prediction model of nitrofurantoin in honey
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