[Research progress in Raman spectra and its test sample pretreatment].

It is generally accepted that Raman spectroscopy is an advanced method with simple operation, small amount of specimens needed as well as rapid on-line screening, detection and identification. However, in the technology of determination, sample preparation is also an significant factor during analysis process. It would affect the accuracy and precision of the results, and normally involved complicated procedure. Developing a rapid and effective sample preparation method coupled with Raman detective technology is a method worth study. In the present paper, the simply basic principle, the origin and development of generating Raman spectra were introduced, some Raman technology, such as the surface-enhanced Raman spectroscopy, tip-enhanced Raman spectroscopy, shell-isolated nanoparticle enhanced Raman spectroscopy and the sample preparation were discussed.