本文選題：LA-ICP-AES　切入點：主成分分析　出處：《光譜學(xué)與光譜分析》2016年10期

【摘要】：目前寶玉石文物無損,微損分析檢測技術(shù)發(fā)展較快,激光剝蝕電感耦合等離子體光譜法(LA-ICPAES)作為幾乎無損的分析方法具有多重優(yōu)點。嘗試采用該方法檢測包括辣子崖采礦遺址綠松石在內(nèi)的東秦嶺五處不同產(chǎn)地的綠松石樣品,獲得樣品的主,微量元素數(shù)據(jù)。運用主成分模型(PCA)分析數(shù)據(jù)結(jié)果,得到3個主成分,其累計方差貢獻(xiàn)率達(dá)84.96%。前兩個主成分的方差貢獻(xiàn)率為72.29%,確定其所對應(yīng)的V2O5,NiO,B2O3,SrO,BaO,CaO,ZrO,MnO2為不同產(chǎn)地綠松石的特征化學(xué)成分。經(jīng)相關(guān)化學(xué)成分的對比分析發(fā)現(xiàn),不同礦點所產(chǎn)綠松石樣品在某些化學(xué)成分含量方面存在差異,且相關(guān)化學(xué)成分的比值散點圖也呈現(xiàn)一定程度的產(chǎn)地聚集性,兩種分析方式相結(jié)合可基本實現(xiàn)不同產(chǎn)地綠松石的鑒別。還發(fā)現(xiàn)某些化學(xué)成分含量存在某種程度的正,負(fù)相關(guān)關(guān)系,此現(xiàn)象既可以成為研究綠松石礦的成因的線索,亦可以作為樣品的產(chǎn)地特征。研究結(jié)果初步表明LA-ICP-AES結(jié)合PCA和化學(xué)成分含量對比分析,在一定程度上具有區(qū)分不同產(chǎn)地綠松石的功能。
[Abstract]:At present, Baoyu cultural relics are not damaged, and the technology of micro-damage analysis and detection is developing rapidly. Laser denudation inductively coupled plasma spectroscopy (LA-ICPAESs) has many advantages as an almost non-destructive analysis method. This method is used to detect turquoise samples from five different areas of East Qinling Mountain, including turquoise from Laziya mining site. The main and trace element data of the sample were obtained, and three principal components were obtained by using the principal component model (PCA). The cumulative variance contribution rate is 84.96. The variance contribution rate of the first two principal components is 72.29. The corresponding V _ 2O _ 5 Nio _ 2O _ 3 SrO _ 2O _ 3 SrO _ 2O _ 3 and Bao _ 2O _ (3) -Bao _ (10) O _ (ZrO _ (2)) MNO _ (2) are the characteristic chemical constituents of turquoise from different producing areas. There are differences in some chemical components in the samples of turquoise from different ore sites, and the ratio scattered plot of related chemical components also shows a certain degree of accumulation in the area. The combination of the two analytical methods can basically realize the identification of turquoise from different habitats. It is also found that there are some positive and negative correlations between the contents of some chemical constituents, which can be used as a clue to study the genesis of turquoise ores. The results showed that LA-ICP-AES combined with PCA and chemical composition analysis could distinguish turquoise from different producing areas to some extent.
【作者單位】： 北京科技大學(xué)冶金與生態(tài)工程學(xué)院;陜西考古研究院;北京大學(xué)考古文博學(xué)院;
【基金】：國家自然科學(xué)基金項目(51374030)資助
【分類號】：O657.3;TS933
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本文編號：1669825