Crossroads of vibrational (infrared and Raman) spectroscopy and X-ray powder diffraction in identification and characterization of some minerals – advantages and limitations. A review

IF 1.1 4区 化学 Q3 CHEMISTRY, MULTIDISCIPLINARY
P. Makreski, L. Pejov, G. Jovanovski
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引用次数: 0

Abstract

Many analytical methods have been successfully employed for the study of minerals, in particular, vibrational infrared (FTIR) and Raman spectroscopies and X-ray powder diffraction (XRPD). The advantages of the vibrational spectroscopic techniques for identifying and characterizing minerals include: rapid and versatile use; qualitative and quantitative chemical signatures; distinctive chemical fingerprint of a material; indirect determination of the crystal features (polymorphism, isomorphism, coordination, degree of deformation of structural polyhedra); small sample quantity (area less than 1 μm2 for Raman); wide coverage of 4,000 – 50 cm−1 region in a single scan; in situ and direct measurements without sample preparation; nondestructive use; etc. On the other hand, XRPD is a destructive technique that, depending on the method used and the density of the material, requires from a few micrograms up to around 5 grams of sample quantity for analysis. In spite of that, it is a rapid and powerful technique used in mineral studies with relatively straightforward interpretation of the results. During the last decade, portable X-ray powder diffractometers for the nondestructive analysis of art and archeological materials have been developed along with the portable and hand-held vibrational spectroscopy instrument. Here, some advantages and limitations in the process of the complementary use of FTIR and Raman vibrational spectroscopy and XRPD for identification and characterization of minerals are outlined.
振动(红外和拉曼)光谱与 X 射线粉末衍射在某些矿物的鉴定和表征中的交叉应用--优势和局限性。综述
许多分析方法已被成功用于矿物研究,特别是振动红外(FTIR)和拉曼光谱以及 X 射线粉末衍射(XRPD)。振动光谱技术在鉴定和表征矿物方面的优势包括:使用快速、用途广泛;定性和定量化学特征;材料的独特化学指纹;间接测定晶体特征(多态性、同构性、配位、结构多面体的变形程度);样品量小(拉曼光谱的样品面积小于 1 μm2);一次扫描可广泛覆盖 4,000 - 50 cm-1 区域;原位直接测量,无需样品制备;无损使用等。另一方面,XRPD 是一种破坏性技术,根据所使用的方法和材料的密度,分析所需的样品量从几微克到 5 克左右不等。尽管如此,X 射线粉末衍射仍是矿物研究中使用的一种快速而强大的技术,对结果的解释也相对简单。近十年来,用于艺术品和考古材料无损分析的便携式 X 射线粉末衍射仪以及便携式手持振动光谱仪相继问世。在此,将概述傅立叶变换红外光谱、拉曼振动光谱和 X 射线粉末衍射仪在矿物鉴定和表征过程中互补使用的一些优势和局限性。
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来源期刊
CiteScore
1.60
自引率
20.00%
发文量
14
审稿时长
>12 weeks
期刊介绍: Macedonian Journal of Chemistry and Chemical Engineering (Mace­d. J. Chem. Chem. Eng.) is an official publication of the Society of Chemists and Technologists of Macedonia. It is a not-for-profit open acess journal published twice a year. The journal publishes ori­ginal scientific papers, short commu­ni­ca­tions, reviews and educational papers from all fields of chemistry, chemical engineering, food technology, biotechnology and material sciences, metallurgy and related fields. The papers pub­lished in the Journal are summarized in Che­mi­cal Abstracts.
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