摘要
本文旨在探讨金属元素的理化性质和其地壳丰度(CA)的分布规律。利用相关性分析和集对分析研究了金属的理化性质和其地壳丰度的关系。结果表明,金属元素21种理化参数与地壳丰度之间均有不同程度的相关性。其中10种理化参数和地壳丰度显著相关(P≤0.05),包括共价指数(X2mr)、原子密度(ρ)、原子序数(AN)、原子量(AW)、有效核电荷(Z*)、电负性(Xm)、软指数(σp)、电子亲和能(EA)、极化力(Z*2/r)和电化学势(ΔE0)。集对分析进一步表明:X2mr,ρ,Z*和Xm与log(CA)之间趋同性较好,支持了相关分析的结论。研究结果暗示金属的理化性质与地壳丰度之间存在密切的内在关系,这为地球演化成因、元素丰度演变规律提供了新证据,对岩石、矿产资源开发和利用等有重要意义。
The study was aimed to analyze the relationship between physicochemical properties of metals and their crustal abundances. The results showed that 10 out of 21 physicochemical properties of metals were significantly related with the logarithm of their crustal abundances, ranking in the following order according to the size of the correlation coefficient (R^2 ) : covalent-bonding index (Xm^2 r) , atom density (p) , atomic number (AN) , atom weight (AW) , efficient nuclear charges (Z^*) , electronegativity (Xm ) , softness index ( σp ) , electron affinities (EA) , polarization force ( Z^* 2/r) and electrochemical potential (△E0). The relationship was further proved by the set pair analysis. It was indicated that the physicochemical properties of metals were closely related with their crustal abundances. The study is helpful to know more about the Earth evolution and elements and to make best use of the rock and mineral resources.
出处
《矿物岩石地球化学通报》
CAS
CSCD
北大核心
2015年第2期419-425,共7页
Bulletin of Mineralogy, Petrology and Geochemistry
基金
国家重点基础研究发展计划项目(41261140337)
国家自然科学基金项目(40973090)
关键词
环境地球化学
定量结构活性相关
线性回归
集对分析
environmental geochemistry
quantitative structure-activity relationships
liner regression
set pair analysis