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  • Title: On-column enrichment and surface-enhanced Raman scattering detection in nanoparticles functionalized porous capillary monolith.
    Author: Jiang Q, Zeng T, Yang S, Chen Q, Chen L, Ye Y, Zhou J, Xu S.
    Journal: Spectrochim Acta A Mol Biomol Spectrosc; 2015 Apr 15; 141():244-51. PubMed ID: 25681809.
    Abstract:
    A monolithic column functionalized with gold nanoparticles (GNPs) was designed to provide ultrasensitive detection with surface-enhanced Raman scattering (SERS). The monolithic column based on poly (glycidyl methacrylate-co-ethylene dimethacrylate) (GMA-co-EDMA) was served as the enrichment sorbent to concentrate GNPs and targets. We found that 60 nm GNPs-functionalized monolithic columns demonstrated the best SERS enhancement, and the lowest detectable concentration for PATP and CV could be achieved at 10(-7) and 10(-11) M, respectively. Moreover, the columns exhibit a good reproducibility in both spot-to-spot (∼10%) and batch-to-batch (∼15%). The SERS monolithic column with a high sensitivity and reproducibility has a great potential in the field-based rapid detection of targets in complex real-world samples.
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