所属单位：理学院

发表刊物：Spectrochimica Acta Part A

关键字：中文关键字：表面增强拉曼散射;银胶;三硝基甲苯;微波加热，英文关键字：SERS;Silver colloid;TNT;Microwave heating

摘要：Surface enhanced Raman spectroscopy (SERS) has been demonstrated for the detection of trace levels of explosives due to its high sensitivity, speed of detection and fingerprint feature. 2,4,6-Trinitrotoluene (TNT), a leading example of nitroaromatic explosives, is causing wide concern. In this study, SERS spectra of TNT solution in silver colloids have been successfully measured and a comparison was drawn with the normal Raman spectra of bulk TNT. The silver colloids were prepared by the microwave heating method and characterized by UV–Vis spectra and the scanning electron microscopy (SEM). NaCl and pH value have a great impact on SERS intensity of TNT, the corresponding experimental research results and theoretical interpretations were further illustrated to a certain extent. Moreover, the detection limit of TNT in aqueous solution was achieved as low as 10-10 mol/L and some preliminary experiments of detecting TNT vapor (about 10lg/L) using SERS have been carried out. Our results demonstrated the potential of SERS for probing TNT with high sensitivity, and suggest SERS as a powerful method for detection of TNT and similar species at trace levels.

备注：SCI（三区）

合写作者：韩德俊

第一作者：庞庆,王凯君,张春玲

论文类型：期刊论文

卷号：卷：122

期号：期：

页面范围：页：387-391

是否译文：否

发表时间：2014-03-01