摘要
目的明确磁石矿物学组成、元素组成、解离度和铁元素赋存状态,全面阐释磁石的物相特征。方法利用扫描电镜-能谱(SEM-EDS)、比表面及孔隙度分析(BET)、X射线衍射(XRD)、X射线光电子能谱(XPS)技术对磁石进行初步物相评价,再利用矿物自动定量分析系统(AMICS)对磁石进行深入物相研究。结果三批磁石样品微观结构差别较小,河北和河南磁石中铁元素和四氧化三铁含量高于山东磁石,同时河北磁石中Fe^(3+)和Fe^(2+)的比值为7∶3,更符合高质量磁石标准。该批样品通过AMICS检测到元素组成主要为Fe、O、Si,以及少量的Al、K、Mg等元素;矿物分布于磁铁矿、橄榄石、石英等36种矿物中,其中铁元素分布于磁铁矿、橄榄石、黑云母等23种矿物中,超过97%的矿物质被解析。结论AMICS技术可用于系统解析磁石的物相特征,由此获取的丰富的矿物学组成、元素组成、解离度和铁元素赋存状态等物相信息,为磁石标准制订、资源研究、品质评价等中药学基础研究提供支持。
Objective To clarify the mineralogical composition,elemental composition,dissociation degree,and occurrence state of iron in magnetitum,and to comprehensively characterize its mineral phase.Methods Scanning electron microscopy-energy dispersive spectroscopy(SEM-EDS),specific surface area and porosity analysis(BET),X-ray diffraction(XRD),and X-ray photoelectron spectroscopy(XPS)were used for preliminary mineral phase evaluation.Subsequently,an in-depth mineral phase analysis was conducted using the advanced mineral identification and characterization system(AMICS).Results The microstructural differences among the three batches of magnetitum samples were minor.The contents of Fe and Fe3O4 in the Hebei and Henan magnetitum were higher than those in the Shandong magnetitum.Furthermore,the ratio of Fe^(3+)to Fe^(2+)in the Hebei magnetitum was 7:3,aligning more closely with the standard for high-quality magnetitum.AMICS analysis revealed that the elemental composition was mainly Fe,O,and Si,with minor amounts of Al,K,Mg,and other elements.The minerals were distributed in 36 mineral types including magnetite,olivine,and quartz.Among these,iron was distributed in 23 mineral types including magnetite,olivine,and biotite.More than 97%of the mineral matter was resolved.Conclusion The AMICS technique can be used to systematically analyze the mineral phase characteristics of magnetitum.The comprehensive mineralogical information obtained,such as mineralogical composition,elemental composition,degree of dissociation,and the occurrence state of iron,provides support for fundamental research in traditional Chinese medicine(TCM),including the formulation of magnetitum standards,resource research,and quality evaluation.
作者
陈敬旭
卢闵
王程程
饶佳丽
向阳
李娟
曹艳
CHEN Jingxu;LU Min;WANG Chengcheng;RAO Jiali;XIANG Yang;LI Juan;CAO Yan(School of Pharmacy,Hubei University of Chinese Medicine,Wuhan 430065,China;Hubei Shizhen Laboratory,Wuhan 430061,China;Jianmin Pharmaceutical Group,Wuhan 430052,China)
出处
《时珍国医国药》
北大核心
2026年第1期102-107,共6页
JOURNAL OF LI-SHIZHEN TRADITIONAL CHINESE MEDICINE
基金
湖北省中医药管理局药用矿物学重点学科建设项目(5432-10100202)。
关键词
磁石
矿物药
物相
矿物自动定量分析系统
Magnetitum
Mineral-based Chinese medicine
Mineral phase
Advanced mineral identification and characterization system
