|a英文題名:Analysis Of Cu, Zn, Fe And Sn In Alloys By Powerchip Laser-induced Breakdown Spectrometry
|a雷射感應破裂光譜法具有不需樣品前處理、可遙測、幾乎不破壞、樣品用量極少、可作多元素測定等許多優點。因此近年來，雷射感應破裂光譜法已成為國際分析化學的熱門研究領域之一。使用動力晶片雷射可將大型之雷射感應破裂光譜儀微小化。然而動力晶片雷射僅提供低雷射能量與高脈衝重複率，雖然其可在大氣壓下進行樣品偵測，但仍有許多困難尚待克服。本研究比較動力晶片雷射感應破裂光譜法與傳統之雷射感應破裂光譜法於銅合金分析之差異性與優缺點。本研究針對銅合金中之銅、鋅、鐵與錫元素作深入之探討。依此數種元素在銅合金中之含量與其在所選擇之原子放射譜線之強度分別選用適當之原子放射譜線為： Cu I 324.75 nm和327.40 nm； Zn I 330.26 nm和334.50 nm； Fe I 236.95 nm； Sn I 283.99 nm和Sn I 286.33 nm。除此之外，本研究還包括：雷射聚焦位置的影響，移動平台速度對訊號強度之影響，定量分析以及雷射剝蝕效率。|uLaser-induced breakdown spectroscopy (LIBS) has numerous advantages such as no sample pretreatment, remote measurement, non-intrusive, minimal sample volume and multi-elemental analysis. In recent years, LIBS has become one of the most popular research subjects in analytical chemistry. LIBS can be miniaturized by using a powerchip laser instead of bulky conventional laser systems. The powerchip laser, which offered low energy pulses and high pulse repetition frequency (up to several kHz), was feasible for sample detection at atmospheric pressure in air, but there were still many problems yet to overcome. In this work, powerchip LIBS and conventional LIBS were compared for the analysis of copper alloys. This work determined Cu, Zn, Fe and Sn contents in copper alloys. The atomic emission lines identified in this work for the elements in copper alloys were Cu I 324.75 nm, Cu I 327.40 nm, Zn I 330.26 nm, Zn I 334.50 nm, Fe I 236.95 nm, Sn I 283.99 nm and Sn I 286.33 nm, respectively. In addition, the influence of laser focusing position, the influence of the different moving speed of stage on signal intensity, quantitative analysis and ablation efficiency were also studied.
|aAnalysis Of Cu, Zn, Fe And Sn In Alloys By Powerchip Laser-induced Breakdown Spectrometry