表面增强拉曼散射光谱同时检测4种痕量多环芳烃

Surface enhanced Raman scattering technique for simultaneous detection of four trace polycyclic aromatic hydrocarbons

合成了植酸保护的纳米金,其具有较强的疏水性和表面增强拉曼散射(SERS)活性.利用小型拉曼光谱仪和分子光谱的指纹信息特征,建立可同时分析水中多种多环芳烃的SERS分析方法.多环芳烃检出限如下:蒽为100μg/L,荧蒽为100μg/L,芘达到10μg/L和苯并芘可达1μg/L.

Phytic acid modified Au （IP6@ Au） nanoparticles with high surface enhanced Raman scattering （ SERS） activity as well as hydrophobicity were synthesized. Based on IP6@ Au and the molecular fingerprint information, we developed a SERS-based method for simultaneous detection of four polycyclic aromatic hydrocarbon species in river water by using a portable Raman sys-tem. The limit of detection for anthracene,fluoranthene,pyrene and benzopyrene were 100,100,10 and 1 μg/L,respectively.