Four phototrophic bacterial species Blastochloris sulfoviridis, Rhodocista pekingensis,Rhodopseudomonas palustris and Rhodomicrobium vannielii, isolated from hot springs were analysed forcellular elemental affinity between them and to determine possible relationship between physiological featuresand the constituent elements. A novel methodology using Energy-dispersive X-ray spectroscopy (EDS/EDX) ofpigments produced by the bacteria was adopted and applied. Results did show close affinity of cellular elementswith little or no difference in weighted and atomic percentages of the constituent elements. There was also littleor no inference in the effects of these elements on the pigments and other features of the bacteria such as colourand morphological differences could not be fully attributed to the elemental inclusions. It was concluded thatsystemic factors that were responsible for extraneous features such as pigmentation, pigment density etc, couldbe a combination of elemental inclusion variations, genetics and other factors in-between rather than one.Required energy sources and metabolic factors were assumed to play key roles in contents and types of cellularelements in relation to pigmentation. Energy-Dispersive X-Ray Spectroscopy Procedure for Analysing Cellular Elemental Affinity of Pigmented Photographs.1.IOSR Journal of Pharmacy and Biological Sciences (IOSR-JPBS)e-ISSN: 2278-3008, p-ISSN:2319-7676.

Energy-dispersive X-ray spectroscopy (also known as EDS, EDX, or EDXA) is a powerful technique that enables the user to analyze the elemental composition of a desired sample. The major operating principle that allows EDS to function is the capacity of high energy electromagnetic radiation (X-rays) to eject 'core' electrons (electrons that are.

Meshcam alternatives. Volume 10, Issue 1 Ver. II (Jan -Feb. 2015), PP 15-21www.iosrjournals.orgDOI: 10.9790/301 www.iosrjournals.org 15 PageEnergy-Dispersive X-Ray Spectroscopy Procedure for AnalysingCellular Elemental Affinity of Pigmented Photographs1,2,.Dr.

The properties of core-shell nanoparticles, which are used for many catalytic processes as an alternative to platinum, depend on the size of both the particle and the shell. It is thus necessary to develop a quantitative method to determine the shell thickness. Pd–Pt core-shell particles were analyzed using scanning transmission electron microscopy (STEM) and energy-dispersive X-ray spectroscopy (EDX). Quantitative EDX line profiles acquired from the core-shell particle were compared to four core-shell models. The results indicate that the thickness of the Pt shell corresponds to two atomic layers. Meanwhile, high-angle annular dark-field STEM images from the same particle were analyzed and compared to simulated images. Again, this experiment demonstrates that the shell thickness was of two atomic layers. Our results indicate that, in small particles, it is possible to use EDX for a precise atomic-scale quantitative analysis.