赤泥中稀土元素的主成分分析和聚类分析

Principal Component Analysis and Cluster Analysis of Rare Earth in Red Mud

采用电感耦合等离子体原子发射光谱法(ICP-AES)测定了不同来源的赤泥样品中包含La,Ce,Pr,Nd,Sc和Y在内的6种稀土元素的含量,建立了赤泥中稀土元素的指纹谱,并用SPSS 20.0对稀土元素进行了主成分分析和聚类分析。结果表明:主成分分析选出2个主因子,La,Ce,Pr,Nd,Sc和Y均是赤泥的特征元素;聚类分析将稀土元素和赤泥样品均聚为两类,这与稀土元素的含量、性质以及铝土矿的品质、地域分布有一定的联系。

The contents of six kinds of rare earth elements,such as La,Ce,Pr,Nd,Sc and Y in red mud of different sources were determined by means of inductively coupled plasma atomic emission spectrometry（ ICP-AES）.The results were used for the establishment of fingerprint chromatogram for rare earth elements in red mud,and the SPSS 20. 0 was used for the principal component analysis and cluster analysis. The results showed that the principal component analysis selected two main factors,La,Ce,Pr,Nd,Sc,and Y were all the characteristic elements of red mud; rare earth elements and red mud samples were all clustered into two groups by cluster analysis,it had a certain relationship with the contents and properties of rare earth elements,and also in contact with the quality and geographical distribution of bauxite.