光谱学与光谱分析
光譜學與光譜分析
광보학여광보분석
SPECTROSCOPY AND SPECTRAL ANALYSIS
2014年
1期
217-220
,共4页
郭连波%张庸%郝中骐%沈萌%李常茂%任昭%李祥友%曾晓雁
郭連波%張庸%郝中騏%瀋萌%李常茂%任昭%李祥友%曾曉雁
곽련파%장용%학중기%침맹%리상무%임소%리상우%증효안
激光诱导击穿光谱%等离子体%钒和钛元素%定量检测
激光誘導擊穿光譜%等離子體%釩和鈦元素%定量檢測
격광유도격천광보%등리자체%범화태원소%정량검측
Laser-induced breakdown spectroscopy%Plasma%Vanadium and titanium elements%Quantitative analysis
采用激光诱导击穿光谱(LIBS)技术测量钢铁中钒、钛元素的含量。选取V Ⅰ440.85 nm和 Ti Ⅰ334.19 nm作为定量分析谱线、基体元素谱线Fe Ⅰ438.35 nm作为内标谱线,分别建立了基本定标法和内定标法的钢铁样品中V和Ti含量的光谱分析定标曲线,并将它们用于检验样品的定量分析。研究表明,V和T i基本定标曲线的拟合相关系数R2分别为0.9875和0.9909,对检验样品中V和T i元素的测定相对误差最大分别为11.1%和4.0%;而采用内定标法时, V 和 T i的拟合相关系数 R2分别达到0.9952和0.9921,对检测样品中V和T i元素的测定相对误差均可降低到4.0%以下。结果证明,采用内定标的激光诱导击穿光谱分析方法更适于钢铁样品中钒、钛含量的测定。
採用激光誘導擊穿光譜(LIBS)技術測量鋼鐵中釩、鈦元素的含量。選取V Ⅰ440.85 nm和 Ti Ⅰ334.19 nm作為定量分析譜線、基體元素譜線Fe Ⅰ438.35 nm作為內標譜線,分彆建立瞭基本定標法和內定標法的鋼鐵樣品中V和Ti含量的光譜分析定標麯線,併將它們用于檢驗樣品的定量分析。研究錶明,V和T i基本定標麯線的擬閤相關繫數R2分彆為0.9875和0.9909,對檢驗樣品中V和T i元素的測定相對誤差最大分彆為11.1%和4.0%;而採用內定標法時, V 和 T i的擬閤相關繫數 R2分彆達到0.9952和0.9921,對檢測樣品中V和T i元素的測定相對誤差均可降低到4.0%以下。結果證明,採用內定標的激光誘導擊穿光譜分析方法更適于鋼鐵樣品中釩、鈦含量的測定。
채용격광유도격천광보(LIBS)기술측량강철중범、태원소적함량。선취V Ⅰ440.85 nm화 Ti Ⅰ334.19 nm작위정량분석보선、기체원소보선Fe Ⅰ438.35 nm작위내표보선,분별건립료기본정표법화내정표법적강철양품중V화Ti함량적광보분석정표곡선,병장타문용우검험양품적정량분석。연구표명,V화T i기본정표곡선적의합상관계수R2분별위0.9875화0.9909,대검험양품중V화T i원소적측정상대오차최대분별위11.1%화4.0%;이채용내정표법시, V 화 T i적의합상관계수 R2분별체도0.9952화0.9921,대검측양품중V화T i원소적측정상대오차균가강저도4.0%이하。결과증명,채용내정표적격광유도격천광보분석방법경괄우강철양품중범、태함량적측정。
The concentrations of vanadium and titanium elements in the steel samples were quantitatively analyzed by Laser-in-duced breakdown spectroscopy technique in the present paper .The lines of V (V Ⅰ :440.85 nm) and Ti (Ti Ⅰ :334.19 nm) were chosen as the quantitative analysis spectral lines ,while spectral line of Fe (Fe Ⅰ :438.35 nm) was chosen as the internal calibration line due to it being the matrix element .Then the calibration curves of V and Ti elements were established with basic calibration method and internal calibration method respectively to quantitatively analyze the concentrations of vanadium and tita-nium elements in steel .The experimental results showed that the fitting correlation coefficient (R2 ) of vanadium and titanium el-ements are 0.987 5 and 0.990 9 when using basic calibration method ,and their maximum relative errors of measurement are 11.09% and 4% respectively ;while the fitting correlation coefficient (R2 ) of vanadium and titanium elements reachs 0.995 2 and 0.992 1 respectively when using internal calibration method ,at the same time ,the relative errors of measurement for vanadi-um and titanium elements were decreased to be lower than 4% .The results of this study demonstrated that the concentration measurement of vanadium and titanium elements in the steel was more suitable with internal calibration method in laser-induced breakdown spectroscopy .