摘要
目的:进行滑石粉中主要元素的分析研究,并对滑石粉和石棉进行微形态分析。方法:利用扫描电子显微镜/X-射线能谱仪(Scanning Electron Microscope/Energy Dispersive X-ray Spectrometer)对滑石粉中元素组成进行了测定,计算它们的相对重量百分比,并进行滑石粉和石棉的微形态分析。结果:滑石粉中主要元素为Mg、Si,还有少量的Fe、Ca、Al等元素;石棉中也含有Mg、Si元素,但比例组成与滑石粉的比例组成不同。滑石粉中Si和Mg,二者相对重量百分比约为(1.3～1.7)︰1,温石棉样品中二者比约为0.6︰1。滑石粉的微区形态为致密块状或鳞片状,石棉的微区形态为长纤维状。结论:不同产地滑石粉中主要元素Mg、Si的比例基本相同。山东产的药用滑石粉中检出少量的Ca,而广西产的药用滑石粉中检出少量的Fe和Al,说明滑石粉中伴生元素的种类有地域特征;工业用滑石粉中均伴生有Ca、Fe和Mg。微形态分析能够直观区分滑石粉和石棉,为检测滑石粉中的石棉成分提供了新方法、新思路。
Objective： To analyze the main elements and research micromorphology of Talci pulvis and asbestos.Method： The surface chemistry components of Talci pulvis and asbestos and their main elements contents were determined by Energy Dispersive X-ray Spectrometer（EDS）.The micromorphologies of Talci pulvis and asbestos were observed by Scanning Electron Microscope（SEM）.Results： The main elements were Mg and Si.The trace elements were Fe,Ca and Al in Talci pulvis and asbestos.The percentage content ratio of the Si and Mg was（1.3-1.7）︰1 in Talci pulvis,and the percentage content ratio of Si and Mg was 0.6：1 in asbestos.The micromorphology of Talci pulvis was dense bulk or scale,but the micromorphology of asbestos was long fibers.Conclusion： The percentage content ratios of the main elements were constant in Talci pulvis of different habitat.Micromorphology analysis could different asbestosfromTalci pulvis.
出处
《药物分析杂志》
CAS
CSCD
北大核心
2012年第3期488-493,共6页
Chinese Journal of Pharmaceutical Analysis
基金
中药质量标准研究和信息化体系建设平台(课题编号2009ZX9308-004)课题内容之一
