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Abstract
We report on a low-level detection of anti-cancer drug (paclitaxel) in blood plasma using microwave-treated gold (Au) film-polystyrene (PS) beads as surface-enhanced Raman scattering (SERS) substrates. SERS spectra of paclitaxel can be acquired within 10 s at a concentration of 1 × 10 −8 M in blood plasma adsorbed on the modified Au-PS SERS substrates. The concentrations of paclitaxel ranging from 1.0 × 10 −8 to 1.0 × 10 −7 M in blood plasma can be well estimated with an accuracy of ∼3.8 × 10 −9 M using SERS technique. This work shows the promise of applying microwave-modified Au-PS as SERS substrates for rapid and accurate monitoring of the anti-cancer drug in blood plasma for immediate treatment decisions during cancer therapy.
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