黄铁矿和毒砂XPS谱图上83eV激发峰的新归因  

THE NEW EXPLANATION OF ENERGY PEAK AT 83 eV IN XPS CHARTS OF PYRITE AND ARSENOPYRITE

作　　者：王玉明[1,2,3] 季寿元[1,2,3] 丘第荣 

机构地区：[1]山西大学师范学院地理系 [2]南京大学地球科学系 [3]南京大学现代分析中心

出　　处：《南京大学学报（自然科学版）》1996年第2期281-286,共6页Journal of Nanjing University（Natural Science）

摘　　要：从原子及离子中电子的行为与结合能之间的关系出发，结合有关的实验事实，指出结合能不仅与氧化态（价态）正相关，而且与颗粒粒径也正相关，并推导出了结合能与粒径之间的关系式。同时笔者由Ａｌｒｅｄ－Ｒｏｃｈｏｗ电负性数据判断认为黄铁矿和毒砂中次显微金不可能呈负氧化数金Ａｕ－形式存在，并因而认为黄铁矿和毒砂ＸＰＳ谱图上出现了８３ｅＶ附近的激发峰是由粒径细小的微包裹体自然金颗粒所引起的。计算得到这些金颗粒的半径约为５００ｎｍ。由此出发笔者还解释了ＸＰＳ实验的一些其他事实。并最终认为次显微金在黄铁矿和毒砂中不可能以类质同象金（Ａｕ１＋、Ａｕ３＋、和Ａｕ－）形式存在。According to the relationship between binding energy and eleetron behavior of atom and ion, and in reference to the effects of relative experiments, the authors point out that the binding energy has direct proportion relation with both oxidation number and radius of particle, and carries out the relation formula between binding energy and radius. Meanwhile, the author also thinks that the submicro gold cannot be negative oxidafion number gold (Au -) in Pyrite and Arenopyrite, according to the Allred Rochow electronegativity data of elements. So, the author considers that the energy peak near 83 ev in XPS charts of Pyrite and Arsemopyrite, is produced by micro inclusion native gold. The calculated radius of those particles is alout 500 nm. Then, the author also explains some other conclusions of XPS experiment. It is finally considered that the submicro gold in Pyrite and Arsenopyrite cannot be isomorphous gold (Au 1+ , Au 3+ , Au -).

关 键 词：黄铁矿 毒砂 XPS 激发峰 金 赋存状态 

分 类 号：P578.292[天文地球—矿物学]