Physical and chemical techniques for a comprehensive characterization of river sediment:A case of study,the Moquegua River,Peru  

作　　者：Luis De Los Santos Valladares Arquimedes Vargas-Luque Luis Borja-Castro Renato Valencia-Bedregal Jose de Jesús Velazquez-Garcia Eustace Peregrine Barnes Angel Bustamante Dominguez Patrick Byrne Pratap Kollu Marco Rodriguez Martínez Jose Antonio Coaquira Crispin Henry William Barnes 

机构地区：[1]Cavendish Laboratory,Department of Physics,University of Cambridge,J.J.Thomson Ave.,Cambridge,CB30HE,UK [2]Escuela Profesional de Ingeniería de Minas,Universidad Nacional de Moquegua,Prolongacion Ave.Ancash,Moquegua,Mariscal Nieto,18000,Peru [3]Laboratorio de Ceramicos y Nanomateriales,Facultad de Ciencias Físicas,Universidad Nacional Mayor de San Marcos,Lima,15081,Peru [4]School of Biological and Environmental Science,Liverpool John Moores University,Liverpool,L33AF,UK [5]Centre for Advances Studies in Electronics Science and Technology(CASEST),School of Physics,University of Hyderabad,Prof.C.R.Rao Rd,Gachibowli,Hyderabad,500046,India [6]Laboratory of Magnetic Characterization,Instituto de Física,Universidade de Brasília,Brasília,DF,70910-900,Brazil

出　　处：《International Journal of Sediment Research》2024年第3期478-494,共17页国际泥沙研究（英文版）

基　　金：supported by the Research Collaboration Agreement between the University of Cambridge,UK;the National University of Moquegua,Peru(Agreement RG85120)。

摘　　要：River sediment is comprised of complex mineral systems composed by different kinds of organic and inorganic matter,and thus,is difficult to characterize.Besides,some standard techniques,such as X-ray diffraction(XRD),energy dispersive X-ray(EDX),optical and scanning electron microscopy,Fourier transmission infrared spectroscopy,inductively couple plasma-mass spectrometry(ICP-MS),and simultaneous Thermogravimetric Analysis-Differential Thermal Analysis(TGA-DTA),Mossbauer spectroscopy and magnetometry can provide substancial information about the compositional,physical,and chemical characteristics.In the current study,the versality of these methods is tested and the information provided by these methods for eight sediment samples,collected from the Moquegua River,Peru is compared.Qualitative analysis indicates that the samples consist of sand grains with different shapes,sizes,and colors coexisting with the presence of some diatoms.The chemical and mineralogical analysis reveal that the samples are composed mainly of silicon(Si),aluminium(Al),sodium(Na),potassium(K),aluminon-silicates,and carbonates,typical for river sediment.More detailed information obtained by these techniques include the discovery of adsorbed oxygen-hydrogen(O-H),carbon-H(C-H)and C,from organic matter,the thermal reactions and decomposition of the components,and the identification of the minor iron-oxides components.Further,other properties such as magnetic interaction are also analyzed in detail.

关 键 词：River sediment X-ray diffraction(XRD) Magnetometry of minerals Mossbauer spectroscopy Fourier transform infrared(FTIR) Thermal analysis 

分 类 号：X522[环境科学与工程—环境工程]