Evaluation of Shifted-Excitation Raman Difference Spectroscopy and Comparison to Ordinary Portable Raman Spectroscopy in Identification of Seized Drugs

Rapid and accurate identification detection of illicit drugs are important for combating drug crimes. As a newly developed technology, shifted-excitation Raman difference spectroscopy (SERDS) can greatly reduce the interference caused by fluorescence improve potential distinguishing compounds in seized samples with fluorescent additives. In this work, 43 random were scanned analyzed both SERDS ordinary portable spectrometers first time. The detected results two technologies confirmed gas chromatographic mass spectrometry test results, compared detail aspects rate matching accuracy. had significant advantages eliminating very high 93.0%, 53.3% obtained an spectrometer, although spectrometer composition multi-component mixed higher To some extent, realized functional complementarity, rational use types may be benefit rapid drugs.