scholarly journals Elemental contents in exotic Brazilian tropical fruits evaluated by energy dispersive X-ray fluorescence

2006 ◽  
Vol 63 (1) ◽  
pp. 82-84 ◽  
Author(s):  
Alessandra Lopes de Oliveira ◽  
Eduardo de Almeida ◽  
Fernanda Bevilácqua Rodrigues da Silva ◽  
Virgílio Franco Nascimento Filho
Keyword(s):  
Nutritional Composition ◽  
The Other ◽  
Energy Dispersive ◽  
Tamarindus Indica ◽  
Tropical Fruits ◽  
X Ray ◽  
Eugenia Uniflora ◽  
Elemental Contents ◽  
Edxrf Technique ◽  
Hancornia Speciosa

The exotic flavor of Brazilian tropical fruits led to increased consumption. Consumers awareness regarding balanced diets, makes necessary determining nutritional composition - vitamins and minerals of the fruits ordinarily consumed. This study contributed to the evaluation of macro (K, Ca) and microelements (Mn, Fe, Cu, Zn and Br) in eight exotic Brazilian tropical fruits: "abiu" (Lucuma caimito Ruiz & Pav.), "jenipapo" (Genipa americana L.), "jambo rosa" (rose apple, Eugenia Jambos L.), "jambo vermelho" (Syzygium malaccence L., Merr & Perry), "macaúba" (Acrocomia aculeata Jacq. Lood. Ex Mart.), "mangaba" (Hancornia speciosa), "pitanga" (Brazilian Cherry, Eugenia uniflora L.), and tamarind (Tamarindus indica L.), using the Energy Dispersive X-Ray Fluorescence (EDXRF) technique. "jambo vermelho" and "macaúba" presented the highest values of K concentrations, 1,558 and 1,725 mg 100 g-1, respectively. On the other hand, Ca concentrations were highest in "macaúba" (680 mg 100 g-1) and "jenipapo" (341 mg 100 g-1). The microelemental concentrations in these eight fruits ranged from: 0.9 to 2.0 mg 100 g-1 for Mn, 3.9 to 11.4 mg 100 g-1 for Fe, 0.5 to 1.0 mg 100 g-1 for Cu, 0.6 to 1.5 mg 100 g-1 for, Zn and 0.3 to 1.3 mg 100 g-1 for Br. The amounts of macro and microelements in the eight fruits analyzed were compared to other tropical fruits and it was found that some of them could be classified as rich sources for these macro and microelements.

ANALYSIS OF INDIAN SILVER COINS BY EDXRF TECHNIQUE

2009 ◽  
Vol 19 (03n04) ◽  
pp. 167-173 ◽  
Author(s):  
B. B. TRIPATHY ◽  
T. R. RAUTRAY ◽  
SATYA R. DAS ◽  
MANAS R. DAS ◽  
V. VIJAYAN
Keyword(s):  
Major Elements ◽  
Energy Dispersive ◽  
Fluorescence Technique ◽  
X Ray ◽  
British Rule ◽  
Edxrf Technique ◽  
Minor Concentration

The analysis of some of the Indian silver coins during British rule were analysed by Energy Dispersive X-Ray Fluorescence Technique. Eight elements namely Cr , Fe , Ni , Cu , Zn , As , Ag and Pb were estimated in this study which also seems to indicate the fragmentation as well as the impoverishment of the power for the regimes that had produced the studied coins. While Cu and Ag were present as major elements, other elements were found to be present in minor concentration.

ANALYSIS OF COPPER COINS BY EDXRF TECHNIQUE

2004 ◽  
Vol 14 (03n04) ◽  
pp. 133-139 ◽  
Author(s):  
T. R. RAUTRAY ◽  
V. VIJAYAN ◽  
P. K. NAYAK ◽  
S. JENA
Keyword(s):  
Trace Elements ◽  
Major And Trace Elements ◽  
Spectroscopic Technique ◽  
Energy Dispersive ◽  
Historical Events ◽  
Trade Routes ◽  
X Ray ◽  
Edxrf Technique ◽  
Non Destructive ◽  
Archaeological Objects

Coins are important archaeological objects that can provide useful information regarding preparation methodology and provenance. Their classification plays a fundamental role in dating historical events, in constructing trade routes and in establishing the welfare of population. Several Indian copper coins of different periods have been studied using Energy Dispersive X-ray Fluorescence (EDXRF) spectroscopic technique. The method is rapid, efficient, multi elemental and non-destructive in nature. Concentrations of the major and trace elements like Ca , Ti , V , Cr , Mn , Fe , Co , Ni , Cu , Zn , As and Pb have been estimated in these copper coins. In the present investigation, an attempt has been made to characterize some Indian copper coins of different periods using EDXRF technique.

scholarly journals Determination of Fe and Zn Accumulation in Leafy Vegetables and Mushrooms Using Energy Dispersive X-Ray Fluorescence Technique

2011 ◽  
Vol 68 (2) ◽  
Author(s):  
Claudia STIHI ◽  
Gabriela BUSUIOC ◽  
Cristiana RADULESCU ◽  
Carmen ELEKES ◽  
Sorin CIULEI
Keyword(s):  
Leafy Vegetables ◽  
Energy Dispersive ◽  
Wild Edible Mushrooms ◽  
X Ray ◽  
Zn Uptake ◽  
Edxrf Technique ◽  
Armillariella Mellea ◽  
Relationship Of ◽  
The Relationship

The aim of this study was to determine the Fe and Zn concentrations in some leafy vegetables (cabbage, spinach, celery and lettuce) and in their growing soil collected from sites with different industrial activity; in fruiting body of wild edible mushrooms (Armillariella mellea) and in their substrate (soil) collected at different distances by a metal smelter, by using energy dispersive X-ray fluorescence (EDXRF) technique. A quantitative evaluation of the relationship of Fe and Zn uptake by the vegetables and mushrooms from soil was made by calculating the coefficient accumulation Ka. The results reveal that lettuce is a accumulator of Fe and Armillariella mellea is a accumulator of Zn.

Determination of iron in uranium matrix using energy dispersive X-ray fluorescence (EDXRF) technique

2015 ◽  
Vol 306 (2) ◽  
pp. 543-548 ◽  
Author(s):  
Sujoy Biswas ◽  
V. H. Rupawate ◽  
K. N. Hareendran ◽  
S. B. Roy
Keyword(s):  
Energy Dispersive ◽  
X Ray ◽  
Edxrf Technique ◽  
Uranium Matrix

Simultaneous determination of trace elements in serum by energy-dispersive x-ray fluorescence spectrometry.

1984 ◽  
Vol 30 (8) ◽  
pp. 1300-1303 ◽  
Author(s):  
F Rastegar ◽  
E A Maier ◽  
R Heimburger ◽  
C Christophe ◽  
C Ruch ◽  
...  
Keyword(s):  
Analytical Procedure ◽  
Internal Standard ◽  
Detection Limits ◽  
The Other ◽  
Energy Dispersive ◽  
Statistical Distributions ◽  
Polypropylene Film ◽  
X Ray ◽  
Large Numbers

Abstract Energy-dispersive x-ray fluorescence is applied in the analysis of human serum to determine the concentrations of several elements simultaneously with minimal manipulation of the sample. The analytical procedure has been developed with standard sera, and standardization, detection limits, and reproducibility have been established. A 50-microL sample of diluted serum, to which an internal standard has been added, is deposited on a thin (4-microns thick) polypropylene film and analyzed by x-ray fluorescence. We report the statistical distributions of the concentrations of Fe, Cu, Zn, and Br obtained in the population (103 samples) studied, and report detection limits for the other 22 elements studied. The simplicity of the method, the high throughput, and the possibility of automating the measurements make this procedure suitable for screening large numbers of sera.

Energy-Dispersive X-ray Spectrometry Performance on Multiple Transmission Electron Microscope Platforms

2010 ◽  
Author(s):  
James Demarest ◽  
Chris Deeb ◽  
Thomas Murray ◽  
Hong-Ying Zhai
Keyword(s):  
State Of The Art ◽  
Analytical Tool ◽  
The Other ◽  
Energy Dispersive ◽  
X Rays ◽  
X Ray ◽  
Root Cause ◽  
Analytical Tem ◽  
Transmission Electron ◽  
Multiple Transmission

Abstract Energy-dispersive X-ray spectrometry (EDS) is a key analytical tool aiding root cause determination in the failure analysis (FA) process. This paper looks at a number of analytical TEM microscopes currently in use in various facilities: microscope A, a STEM operated at 200kV; microscope B, a 300kV TEM; and microscopes C and D, both 200kV TEMs. EDS counts per unit time from multiple microscope platforms were examined. Microscope D demonstrated two orders of magnitude higher counts per unit time than the other three microscopes. Microscope D represents the state-of-the-art EDS analytical TEM configuration and has achieved this through a novel windowless EDS configuration which significantly increases the detector area (by about a factor of three) that receives X-rays generated from the sample.

Cathodoluminescence of Diffusion Layer Synthesized by Coupling of β-Ga2O3 and ZnO

2006 ◽  
Vol 320 ◽  
pp. 121-124 ◽  
Author(s):  
Kenichi Suzuki ◽  
Yuichiro Kuroki ◽  
Tomoichiro Okamoto ◽  
Masasuke Takata
Keyword(s):  
Zinc Oxide ◽  
Diffusion Layer ◽  
Gallium Oxide ◽  
The Other ◽  
Energy Dispersive ◽  
X Ray ◽  
Eds Analysis ◽  
Other Hand ◽  
Zno Ceramics

Beta gallium oxide (β-Ga2O3) ceramics was coupled and reacted with zinc oxide (ZnO) ceramics at 1200oC for 24 h. Energy dispersive X-ray spectroscopy (EDS) analysis revealed the existence of diffusion layer near the interface between β-Ga2O3 and ZnO. Furthermore, the layer showed monochromatic and intense cathodoluminescence (CL) at 3.5 eV. On the other hand, very weak emissions were observed from the out of the layer. The compound in the layer is considered to be an attractive material for ultraviolet optoelectronics.

scholarly journals MICROELEMENTAL ANALYSIS OF RICE (ORYZA SATIVA) USING ENERGY DISPERSIVE X-RAY SPECTROSCOPIC (EDXRF) TECHNIQUE

2014 ◽  
Author(s):  
V. K. Rewatkar A. A. Saoji K. G. Rewatkar V. K. Rewatkar A. A. Saoji K. G. Rewatkar ◽  
Keyword(s):  
Oryza Sativa ◽  
Energy Dispersive ◽  
X Ray ◽  
Edxrf Technique

K shell absorption jump ratios and jump factor measurements for some elements in the range of 40 ≤ Z ≤ 50

2019 ◽  
Vol 97 (7) ◽  
pp. 786-790
Author(s):  
A. Turşucu
Keyword(s):  
Point Source ◽  
Atomic Number ◽  
Semiconductor Detector ◽  
Theoretical Calculations ◽  
Energy Dispersive ◽  
X Rays ◽  
Number Range ◽  
X Ray ◽  
Edxrf Technique ◽  
Experimental Values

In this study, K shell absorption jump ratios (JK) and jump factors (rK) of specimens in the atomic number range of 40 ≤ Z ≤ 50 were measured using the energy dispersive X-ray fluorescence (EDXRF) technique. Related specimens were excited using 59.54 keV γ-photons that were radiated from a 241Am point source. Typical K X-rays emitting from specimens were detected from silicon drifted lithium (Si(Li)) semiconductor detector. Derived JK and rK values of related specimens were compared with calculated theoretical and other experimental values. The agreement of measured values was reasonable with theoretical calculations.

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