Software Develoment And Application Of Portable Laser-induced Breakdown Spectroscopy

Laser-induced breakdown bpectroscopy(LIBS) is a rapid developing analytical technique with the advantages of fast analysis, real-time and online analysis or monitoring, minimal sample preparing, multi-element analysis etc. However, it is not convenient for conventional LIBS system in the occasion of in situ, online, wild and extreme envirvonment. Portable LIBS provides a way to addess these problems and is especially applicable in real-time and in situ analysis. In addition, controlling software plays an important role in the portable LIBS systems, by which the hardwares were controlled and the analysis results could be obtained. The controlling software of portable LIBS was developed and applied in this dissertation.The controlling software was composed of central terminal and remote terminal. The central terminal based on Windows mainly connects the equipment, sets parameters of the equipment and triggers the equipments. At the same time, the spectral data could be processed and the calibration curve could be plotted by the central terminal. The remote terminal based on Android communicates with the central terminal using Http protocol, controlls theequipments remotely and obtains the analysis results. Furthermore, data analysis methods, such as basic scaling, internal calibration and SIMPLS Partial Least Square, were also integrated into the controlling software.The performance of the controlling software was evaluated by analyzing MBH nickel alloys. That is, the central terminal and the remote terminal separately triggered the equipment, and then collected and analyzed the spectral data. Afterwards, the calibration curves of Titanium and Manganese were plotted and both the R2 were bigger than 0.9. These results suggested that the controlling software could met the demands of portable LIBS.