School of Food Science and Engineering, Jiangxi Agricultural University, Nanchang 330045, People's Republic of China.
School of Food Science and Engineering, Jiangxi Agricultural University, Nanchang 330045, People's Republic of China.
Spectrochim Acta A Mol Biomol Spectrosc. 2022 May 5;272:120960. doi: 10.1016/j.saa.2022.120960. Epub 2022 Jan 29.
In this study, we developed an innovative approach that combines solid phase microextraction (SPME) with surface-enhanced Raman spectroscopy (SERS) to detect pesticide ferbam rapidly. An Au nano-glass capillary was fabricated by coating template-freely synthesized three-dimensional network Au nanostructures (3D-NW AuNSs) on the roughened surface of glass capillary and used for SPME and SERS respectively. Significant Raman signals were obtained by the SPME-SERS method, followed by detection of ferbam in water and orange juice samples with only 1 min SPME process. Results showed that Au nano-glass capillaries could achieve the detection of ferbam with limit of detection of 0.05 μg/L, and coefficient of determination (R) of 0.9913. The recovery of predicted results was in the range of 88.46-103.29% and the relative standard deviation (RSD) was 3.5-8.2%. This study demonstrated potential capability of the SPME-SERS method for rapid (within 1 min) and sensitive detection of organic compounds in complex matrices. The SERS-active Au nano-glass capillary is easy to carry and operate, and is expected to play a role in the detection of trace pollutants.
在本研究中，我们开发了一种创新的方法，将固相微萃取（SPME）与表面增强拉曼光谱（SERS）相结合，快速检测农药福美双。通过在玻璃毛细管粗糙表面上涂覆无模板合成的三维网络金纳米结构（3D-NW AuNSs），制备了 Au 纳米玻璃毛细管，分别用于 SPME 和 SERS。通过 SPME-SERS 方法获得了显著的拉曼信号，随后仅通过 1 分钟的 SPME 过程即可在水样和橙汁样品中检测福美双。结果表明，Au 纳米玻璃毛细管能够实现对福美双的检测，检出限为 0.05μg/L，决定系数（R）为 0.9913。预测结果的回收率在 88.46%-103.29%之间，相对标准偏差（RSD）为 3.5%-8.2%。本研究证明了 SPME-SERS 方法在快速（1 分钟内）和灵敏检测复杂基质中有机化合物方面的潜在能力。SERS 活性 Au 纳米玻璃毛细管易于携带和操作，有望在痕量污染物检测中发挥作用。
