Comparison of methods performed as cross checking results of the analysis and to overcome the limitations of the three methods. The analytical performance of non-destructive EDXRF was compared with other analytical techniques neutron activation analysis and atomic absorption spectrometry. The aim of this work is to demonstrate the applicability of EDXRF for food analysis. Therefore, the determination of Ca and K content in various foods needs to be done. The macro elements calcium and potassium constitute important nutrients required by the human body for optimal physiological functions. Thus, EDXRF spectrometry is applicable for food inspection. D.Д®nergy-dispersive X-ray fluorescence (EDXRF) spectrometry is a non-destructive, rapid, multi elemental, accurate, and environment friendly analysis compared with other detection methods. Macro elemental analysis of food samples by nuclear analytical technique These qualities make the LIBS technique uniquely suited for use in the lunar environment. LIBS also eliminates the need for sample retrieval and preparation preventing possible sample contamination. This technique provides simultaneous multielement detection and has good sensitivity for many elements. A single laser spark both vaporizes and excites the sample so that near real-time analysis (a few minutes) is possible. Since only optical access to a sample is required, areas inaccessible to a rover can be analyzed remotely. LIBS is a simple technique that can be automated for inclusion aboard a remotely operated vehicle. The light is spectrally resolved to identify the emitting species. Material in the plasma is vaporized, and the resulting atoms are excited to emit light. Laser-Induced Breakdown Spectroscopy (LIBS) is a form of atomic emission spectroscopy in which a powerful laser pulse is focused on a solid to generate a laser spark, or microplasma. For special demands, separations can be performed by capillary electrophoresis, which has very high separation efficiency.ДЄn in Situ Technique for Elemental Analysis of Lunar SurfacesДЄn in situ analytical technique that can remotely determine the elemental constituents of solids has been demonstrated. Thin-layer and paper chromatography are techniques that cannot be directly coupled with suitable detectors, which limit their applications. The application of gas chromatography is limited because only volatile compounds of REEs can be separated. Different combinations of stationary phases and mobile phases could be used in ion exchange chromatography, ion chromatography, ion-pair reverse-phase chromatography and some other techniques. Liquid chromatography is the most widely used technique. By coupling with sensitive detectors, many ambitious analytical tasks can be fulfilled. On the other hand, the determination of REEs very often depends on the preconcentration and separation of REEs, and chromatographic techniques are very powerful tools for the separation of REEs. The efficiency of spectroscopic methods was extraordinarily improved for the detection and determination of REE traces in various materials.

The present capability of rare earth element (REE) analysis has been achieved by the development of two instrumental techniques. Chromatographic Techniques for Rare Earth Elements AnalysisД¬hen, Beibei He, Man Zhang, Huashan Jiang, Zucheng Hu, Bin

Elemental studio percussion