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中文摘要：
将高能激光脉冲聚焦在合金样品表面形成样品的高温等离子体，用光栅光谱仪与增强型电感耦合装置（ICCD）分析等离子体的发射谱线来测定合金中的元素种类与浓度．实验以系列标准铝合金的光谱来标定Fe，Si，Cu的定量分析标准曲线，分析了铝合金中主要元素的测量精度与探测限．研究表明，该方法在合金元素质量分数大于0．01％时，测量相对误差在5％之内；在合金元素质量分数低于0．01％时，测量绝对误差在0．001％之内，对3种合金元素的检出限可达6×10^-5～10×10^-3。左右，且采用基体元素作为内标可进一步提高分析精度．
英文摘要：
An intense laser radiation was focused on the surface of the sample to generate a plasma plume which vaporized a small amount of alloy material. The emission spectrum emitted as the plasma cooling off, which contained the information of elemental species and concentration in alloy, was collected and analyzed by high-resolution echelle grating spectrometer coupled to intensified charge coupled device （ICCD） camera. A series of standard aluminum alloy reference samples were analyzed for their alloying elements, including Fe, Si, and Cu. Results for Fe, Si, and Cu indicated limits of detection that ranged from 6 × 10^-5-10 × 10^-5 and almost all measurement relative errors less than 5 when mass concentration are over 0.01 %. The absolute measurement errors for element with mass concentration under 0.01 % were less than 0. 001%.
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