期刊
ANALYTICAL LETTERS
卷 43, 期 14, 页码 2135-2141出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/00032711003687039
关键词
Gold surfaces; Melamine; Powdered milk; SERS
资金
- Seoul RBD program [10543]
We detected a trace amount of melamine in powdered milk using surface enhanced Raman scattering (SERS) on gold surfaces at an excitation wavelength of 632.8 nm. A detection limit of similar to 100 ppm (mu g/g) melamine in milk was attained within a few minutes by the gold nanoparticle substrate from chemical reduction; whereas, better sensitivity, as low as similar to 200 ppb (ng/g), was achieved by the roughened gold substrate. Our method has the advantage of fast and sensitive detection of melamine in powdered milk without pre-treating the samples.
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