激光消融-快脉冲放电等离子体光谱定量检测铝合金中元素  

Quantitative Analysis of Elements in Aluminum Alloy Using Laser Ablation Fast Pulse Discharge Plasma Spectroscopy

作　　者：李科学[1] 周卫东[1] 钱惠国[1] 李霞芬[1] 任志君[1] 彭保进[1] 

机构地区：[1]浙江师范大学信息光学研究所,浙江金华321004

出　　处：《激光与光电子学进展》2012年第1期133-136,共4页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(61178034);浙江省自然科学基金(Y1100268);浙江省高校重大科技攻关项目(ZD2009006)资助课题

摘　　要：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.

关 键 词：光谱学 激光消融-快脉冲放电等离子体光谱 信号增强 铝合金 定量分析 

分 类 号：O433.4[机械工程—光学工程]