Research Status in the Use of Surface-Enhanced Raman Scattering (SERS) to Detect Pesticide Residues in Foods and Plant-Derived Chinese Herbal Medicines
Table 3
Comparison of advantages and disadvantages of pretreatment methods.
Pretreatment methods
Advantages
Disadvantages
SPE
Sample enrichment and purification can be completed at the same time, simple operation
High cost, limited enrichment capacity, poor repeatability
SPME
No need for organic solvents, low environmental pollution; simple instrumentation and easy to operate
Poor repeatability, low accuracy of quantitative detection, few types of commercially available polymers
QuEChERS
Rapid and simple operation, good sensitivity and accuracy, wide application range, less environment pollution
Impurities can be only partially removed, susceptible to matrix effects