采用激光烧蚀快脉冲放电等离子体光谱技术分析铝合金样品。记录了该技术激发铝合金样品后的发射光谱以及若干元素谱线的信噪比和谱线强度的相对标准偏差(RSD)。与传统的激光诱导击穿光谱技术相比，激光烧蚀快放电等离子体光谱技术应用于铝合金样品后所产生的辐射光谱强度和信噪比均有很大提高，发射光谱线强度的相对标准偏差也得到了改善。此外还得到了采用该技术对铝合金样品中若干微量元素进行定量检测的标准曲线。

Laser ablation fast pulse discharge plasma spectroscopy (LA-FPDPS) technique is used to analyse aluminum alloy. The optical emission spectra are recorded using this technique. From the measured spectra, the signal-to-noise ratio (SNR) and the relative standard deviation of several elemental lines are derived. Compared with the spectrum obtained from laser induced breakdown spectroscopy, the optical emission intensity and SNR in the LA-FPDPS spectrum of aluminum alloy increase greatly. The measurement precision in terms of relative standard deviation is improved as well. In addition, several calibration curves for trace elements analysis in aluminum alloy are obtained using LA-FPDPS technique, which can be used for quantitative analysis of those corresponding elements.