表面增强拉曼光谱法在果蔬农药残留检测中的应用

农药的使用对果蔬产业的提升起到了重要作用,但不合理的施用必然会对环境及果蔬产品造成污染,因此必须加强检测和管控工作。相较于质谱法,表面增强拉曼光谱检测法可以通过将痕量的农残分子吸附于基底表面达到增强拉曼散射信号的效果,因其具有快速、无损、易操作等优点,被视为一款新型的农药残留快速检测技术。本文针对果蔬农残检测领域,综述了表面增强拉曼光谱在基底制备、样品前处理、农药残留定性判别和定量分析方面的国内外研究进展。总结了贵金属纳米材料的形状、尺寸、组成对拉曼信号稳定性和灵敏度的影响,重点介绍了柔性基底材料、光谱数据模型构建的最新研究进展,同时展望了表面增强拉曼光谱农残检测技术的发展方向和应用前景。

Application of surface enhanced Raman spectroscopy in detection of pesticide residues in fruits and vegetables

The application of pesticides plays an important role in improving the fruit and vegetable industry. However, unreasonable use will inevitably lead to excessive pesticide residues in agricultural products, which poses potential threats to the health of consumers. Therefore, detection and control work must be strengthened. Surface enhanced Raman spectroscopy has the advantages of fast, non-destructive and easy to operate, which is regarded as a new rapid detection technology. The progress was introduced from four items, including surface-enhanced substrate, pretreatment of samples, pesticide residues in SERS (surface - enhanced Raman technology) qualitative identification and quantitative analysis. The development direction of SERS in pesticide residue detection was prospected.