矿物基负离子发生材料的结构和组成特征

Structure and Composition Characteristic of Mineral Materials Generating Negative Ions

用X射线粉末衍射仪、X射线能谱仪和等离子体原子发射光谱仪分析了多种矿物基材料的主物相结构和元素组成，并用离子检测仪测定了各材料的负离子发生量。研究表明，具有负离子发生功能的矿物基材料可以由具有明显压电、热电效应的矿物组成，也可以由含有一定量稀土元素和天然原生放射性核素的矿物组成。矿物中适量天然原生放射性核素的存在对于制备高性能的矿物基负离子发生材料是有益的。

The crystal structure of dominant phase and the composition characteristic of some mineral material generating negative ions are confirmed by using X-ray powder diffractometer, energy dispersive X-ray spectrometry and inductively coupled plasma-atomic emission spectrometry. The generated negative ions are detected by ions tester. This study demonstrates that the mineral material generating negative ions is composed of the mineral which has the obvious piezoelectric effect and pyroelectric effect or which contains the proper quantity of rare earth element and natural primordial radionuclides. The presence of finite natural primordial radionuclides in the mineral is beneficial to the preparation of high performance mineral material generating negative ions.