ICP光源的激光烧蚀固体样品引入方法进展

根据近几年来国内外的有关文献，叙述了ICP光源的激光烧蚀固体进样方法的研究进展及其在物质成分分析中的应用。着重阐述了激光输出特性(输出波长、脉冲宽度、重复频率、能量密度)和环境气氛(氦气、氩气)对样品烧蚀过程的影响，讨论了激光烧蚀室、气溶胶传输管道及样品引入改进装置在蒸发物质被传输到ICP光源过程中的作用。获得较小而均匀的气溶胶颗粒和稳定高效地将烧蚀物质输送到ICP是完善激光烧蚀固体进样技术的关键环节，元素分馏效应及蒸发物沉积是影响分析性能的重要因素。作为实际例子，也讨论了激光烧蚀固体进样电感耦合等离子体发射光谱法/质谱法在金属、玻璃、有机物及其他样品分析方面的应用，对分析方法的准确度、精密度、检出限和灵敏度进行了简要论述。

Progress in the Method of Laser Ablation Solid Sample Introduction to Inductively Coupled Plasma Source

On the basis of consulting the home and abroad literatures in recent years, the research progress in the method of laser ablation solid sampling to the inductively coupled plasma source and its application in the analysis of material compositions are described, The present paper emphatically reviewed the influence of the laser-beam properties (output wavelength, pulse duration, repetition frequency, energy density) and atmosphere gases (helium and argon) on the sample ablation process, and discussed the functions of the laser ablation chamber, aerosol transmission pipelines, and sample introduction devices improved in the process of the evaporated material transferring to the inductively coupled plasma source. Getting small uniform aerosol particles and transporting the ablated materials to the inductively coupled plasma source efficiently and steadily are the key points to make laser ablation solid sampling technique more perfect, and the elements fractionation and evaporation deposition are important influence factors for the analysis performance. As a practical example, the application of laser ablation solid sampling inductively coupled plasma atomic emission spectrometry/mass spectrometry in the analysis of metal, glass, organic substance, and other samples was also discussed. The accuracy, precision, detection limits, and sensitivity of the analysis method were briefly reviewed.