水体悬浮颗粒物的扫描电镜与X射线能谱显微分析  

Microanalysis of Suspended Particulates in Water Environment by Scanning Electron Microscope and Energy Dispersive X-ray Spectroscopy

作　　者：盛东[1] 胡忻[1,2] 刘锡尧[2] 

机构地区：[1]南京大学现代分析中心,江苏南京210093 [2]厦门大学近海海洋环境科学国家重点实验室海洋与环境学院,福建厦门361005

出　　处：《岩矿测试》2010年第6期679-682,共4页Rock and Mineral Analysis

基　　金：国家自然科学基金项目资助(20607010);近海海洋环境科学国家重点实验室(厦门大学)开放基金项目资助(MEL0705)

摘　　要：利用扫描电子显微镜和X射线能谱仪对在厦门湾采集的水体悬浮颗粒物进行形态观察和X射线能谱微区元素分析。用扫描电镜研究不同深度采集的悬浮颗粒物,表明悬浮颗粒物形貌主要由硅藻及其碎片、块状结构、粒状结构、片层结构等形状规则结构和无定形结构组成。X射线能谱微区元素分析表明,氧、硅和铝是颗粒物的主要组成元素。硅、铝的含量一般分别在20%和10%,无明显的有机颗粒存在。表层细粒径(<63μm)沉积物的组成与悬浮颗粒物相似,具有相同的来源。Suspended particulate matters in water environment collected from western Xiamen Bay were analyzed using scanning electron microscope（SEM） and energy dispersive X-ray spectroscopy（EDS）.The results from SEM showed that suspended particle matters in water from the different depth mainly included diatom and their fragments,regular shape such as blocks,pieces and particles and amorphous particulate matters.EDS analysis showed that Si,O and Al were the main components of suspended particulate matters.Concentrations of Si and Al were generally about 20% and 10%,respectively.Scarcely any organic particulates were found.The main components of fine grain-size fraction（〈63 μm）of surface sediment were consistent with that of the suspended particulate matters.

关 键 词：扫描电镜 X射线能谱 水体 颗粒物 微区分析 

分 类 号：P575.2[天文地球—矿物学] P575.5[天文地球—地质学]