Intelligent Detection and Analysis of Polycyclic Aromatic Hydrocarbons Based on Surface-Enhanced Raman Scattering Spectroscopy

Table 1

Existing detection methods of PAHs and their advantages and disadvantages.

Detection method	Advantages	Disadvantages
Gas chromatography	High selectivity, high separation efficiency, high sensitivity, fast speed	Small application range, weak pertinence
High-performance liquid chromatography	Can analyze multiple compounds at the same time, good selectivity, high detection sensitivity	Solvent consumption is large, detectors have high separation efficiency, price is expensive
Chromatography and mass spectrometry	High separation efficiency, can determine the structural characteristics of the compound instrument	Expensive equipment, immature interface technology
Thin-layer chromatography	Simple, fast speed, intuitive	Low sensitivity, low separation efficiency
Capillary electrophoresis	High separation efficiency, simple operation	Sensitivity of existing detectors is not high
Immunoassay method	Strong pertinence, high sensitivity, low cost	Only one substance can be analyzed at a time, little information