scholarly journals Case Study On The Relationships Between Soil Contents Of Some Harmful Chemical Elements Determined By Different Equipment

2015 ◽  
Vol 1 ◽  
pp. 89
Author(s):  
Rimantė Zinkutė ◽  
Ričardas Taraškevičius
Keyword(s):  
Linear Relationship ◽  
Chemical Elements ◽  
Linear Equations ◽  
Atomic Emission ◽  
Energy Dispersive ◽  
X Ray ◽  
Edxrf Analysis

Comparison of total contents of Ba, Cr, Cu, Mn, Mo, Ni, Sn, Pb, V, Zn, Al, Ca, Fe, Mg determined in topsoil of central part of Vilnius by optical atomic emission spectrophotometry (OAES) with respective contents determined by energy-dispersive x-ray fluorescence (EDXRF), analysis of their correlation and linear relationship with and without outliers are the tasks of research. For most elements, except Ca, Sn, Ba, the contents determined by EDXRF are significantly lower and less variable. They can be predicted according to OAES-contents using linear equations. After elimination of outliers for all elements the correlation is significant at p<0.05.

scholarly journals First results on the use of a EDXRF scanner for 3D imaging of paintings

ACTA IMEKO ◽  
2018 ◽  
Vol 7 (3) ◽  
pp. 8
Author(s):  
Roberto Cesareo ◽  
Stefano Ridolfi ◽  
Antonio Brunetti ◽  
Ricardo T Lopes ◽  
Giovanni E Gigante
Keyword(s):  
High Intensity ◽  
3D Imaging ◽  
Chemical Elements ◽  
Energy Dispersive ◽  
X Ray ◽  
Alternative Method ◽  
Edxrf Analysis ◽  
First Results ◽  
Synchrotron Light

A 3D map of chemical elements distribution from energy-dispersive X-ray fluorescence (EDXRF) analysis would be a perfect conclusion<br />in a detailed study of any type of artifact. This map can be easily achieved by using synchrotron light as source of radiation, and micro-<br />optics both at the source and at the detector. In such a manner a micro-voxel is irradiated and detected, which can be at any depth with<br />respect to the surface of the artifact. This method is effective but needs a high-intensity X-ray source; therefore, its use in archaeometry<br />is limited. An alternative method is proposed in the present paper, which uses a portable EDXRF-device to measure the altered Ka/Kb<br />or La/Lb-ratios, which allow to locate the chemical elements. Several examples are described.

The Effective use of Filters with Direct Excitation of EDXRF

1979 ◽  
Vol 23 ◽  
pp. 231-239 ◽  
Author(s):  
Ronald A. Vane ◽  
William D. Stewart
Keyword(s):  
Spectral Region ◽  
Energy Dispersive ◽  
Primary Beam ◽  
Proper Choice ◽  
X Ray ◽  
Direct Excitation ◽  
Edxrf Analysis ◽  
Beam Transmission ◽  
Effective Use ◽  
Excitation Conditions

AbstractPrimary beam transmission filters in energy dispersive X-ray fluorescence (EDXRF) analysis are used to shape the spectral output of the X-ray tube. The effective use of these filters allows the optimization of excitation conditions for each different analysis. Filters are used in two basic ways in EDXRF; either as edge filters or as white filters. The proper choice of filter and excitation conditions optimizes the analysis of a particular element or spectral region by shaping the primary radiation to reduce background and to maximize excitation.

scholarly journals White Spots on Smoke Rings by Bruce Nauman: A Case Study On Contemporary Art Conservation Using Microanalytical Techniques

2014 ◽  
Vol 21 (1) ◽  
pp. 15-19 ◽  
Author(s):  
Ana Cardeira Mafalda ◽  
Rodrigo Bettencourt da Câmara ◽  
Patrick Strzelec ◽  
Nick Schiavon ◽  
José Mirão ◽  
...  
Keyword(s):  
Energy Dispersive ◽  
Al Alloy ◽  
Main Concern ◽  
Art Conservation ◽  
X Ray ◽  
Alloy Substrate ◽  
White Spots ◽  
Bruce Nauman ◽  
Zircon Particles

AbstractThe artwork “Smoke Rings: Two Concentric Tunnels, Non-Communicating” by Bruce Nauman represents a case study of corrosion of a black patina-coated Al-alloy contemporary artwork. The main concern over this artwork was the widespread presence of white spots on its surface. Alloy substrate, patina, and white spots were characterized by means of energy-dispersive X-ray fluorescence and scanning electron microscopy with energy-dispersive spectroscopy. Alloy substrate was identified as an aluminum alloy 6,000 series Al–Si–Mg. Patina’s identified composition confirmed the documentation provided by the atelier. Concerning the white spots, zircon particles were found on patina surface as external elements.

A Brief Study of Cambodian Circular Earthwork Ceramics as

2012 ◽  
Vol 31 ◽  
pp. 64
Author(s):  
Michael F Dega ◽  
Kyle Latinis
Keyword(s):  
Mekong Delta ◽  
Ceramic Production ◽  
Energy Dispersive ◽  
Ceramic Assemblage ◽  
X Ray ◽  
Site Characteristics ◽  
Edxrf Analysis ◽  
Additional Level ◽  
Material Record ◽  
Level Of Analysis

Prehistoric circular earthwork sites occurring across the basaltic plateau of eastern Cambodia/western Vietnam are internally homogenous in terms of site characteristics and material record. Energy Dispersive X-Ray fluorescence (EDXRF) analysis of several earthwork ceramic assemblage samples was studied in efforts to identify if ceramic production centers could be recognized within the circular site grouping. The EDXRF study provides an additional level of analysis to show that earthwork pottery was not being traded further south, into the Mekong Delta floodplains, and vice-versa.

EDXRF ANALYSIS OF SOME INDIAN TOBACCO PRODUCTS AND BLOOD ELEMENTS OF TOBACCO USERS

2001 ◽  
Vol 11 (01n02) ◽  
pp. 27-34 ◽  
Author(s):  
PRADEEP KUMAR HOTA ◽  
V. VIJAYAN ◽  
LAMBODAR PRASAD SINGH
Keyword(s):  
Human Blood ◽  
Energy Dispersive ◽  
Tobacco Products ◽  
Blood Samples ◽  
X Ray ◽  
Edxrf Analysis ◽  
Indian Tobacco ◽  
Blood Elements ◽  
Healthy Persons

Seventy-five samples of some Indian tobacco-products, 48 blood samples drawn from some tobacco- users and 14 blood samples from some healthy persons without having any tobacco habits were analysed for elements such as K, Ca, Fe, Cu, Zn, Mn, Sr, Se, As and Pb using Energy Dispersive X-ray Fluorescence (EDXRF) spectrometry at the Institute of Physics, Bhubaneswar. Comparison was made between the results from this work and the reported literature values. Tobacco-products were found to be enriched with multi-elements, and it was observed that the human blood-elements were slowly decreasing with respect to their increasing habits of tobacco.

scholarly journals Spanish Colonial Period Bricks from Churches in Laguna, Philippines: A Preliminary Chemical Characterisation Using X-ray Diffraction, Energy Dispersive X-ray Fluorescence and Fourier Transform Infrared

2021 ◽  
Vol 32 (2) ◽  
pp. 105-124
Author(s):  
Jan-Michael C. Cayme ◽  
Arturo F. Bermejo III ◽  
Chris Allen Earl T. Francia ◽  
Aniano N. Asor Jr ◽  
Eric T. Miranda
Keyword(s):  
Fourier Transform ◽  
Chemical Elements ◽  
Fourier Transform Infrared ◽  
The Philippines ◽  
Colonial Period ◽  
Energy Dispersive ◽  
Clay Material ◽  
X Ray Diffraction ◽  
Spanish Colonial ◽  
X Ray

Spanish Colonial Period brick samples dating to the 19th century from the Municipalities of Liliw and Pagsanjan in Laguna, Philippines was investigated. These samples were obtained from two church structures, a church bell tower from Liliw and a church convent from Pagsanjan. Combined X-ray diffraction (XRD), energy dispersive X-ray fluorescence (EDXRF) and Fourier transform infrared (FTIR) spectroscopy allowed the determination of chemical elements and minerals attributed to clay and sand, such as montmorillonite, quartz, corundum, hematite and calcite. On the basis of these compositions, the possible kilning conditions employed to fire the bricks during manufacture was also proposed. MATLAB™ programme was utilised in this study to interpret the data from XRD and FTIR to rationalise the overlapping peaks in the spectrum. Results show that both brick samples were made of clay material that is non-calcareous with low refractory. The firing was performed in an oxidising atmosphere or an open-air environment at an estimated temperature of between 650°C and 850°C. This preliminary study provides a baseline chemical characterisation data of colonial period bricks in the Philippines which will be useful for future conservation and restoration work not only locally but also within the Southeast Asian region.

Energy-dispersive X-ray analysis on thin sections and unimpregnated soil material.

1975 ◽  
Vol 23 (2) ◽  
pp. 113-125
Author(s):  
E.B.A. Bisdom ◽  
S. Henstra ◽  
A. Jongerius ◽  
F. Thiel
Keyword(s):  
Chemical Elements ◽  
Research Abstract ◽  
Energy Dispersive ◽  
Topographic Image ◽  
Thin Sections ◽  
Soil Material ◽  
Crystalline Materials ◽  
X Ray ◽  
Loose Soil

A combination of scanning electron microscopy (SEM) and energy-dispersive X-ray analysis (EDXRA) was used in the study of soil materials. The investigation in situ of components in thin sections was used to estimate chemical elements with atomic numbers 11 upwards, from sodium on. EDXRA could detect chemical elements up to magnifications of X 10 000. The composition of amorphous and micro-crystalline materials cannot be estimated in thin sections by light microscopy but by this technique was clearly displayed. Composition of loose soil material can also be investigated. The material that could be studied by SEM-EDXRA did not need high polishing of the thin section, and the plastic used for impregnation of the soil material was not affected by the investigation.Identification of chemical elements in situ, high resolution of the topographic image and relatively short testing times for the elements make this combination of techniques useful for soil research. (Abstract retrieved from CAB Abstracts by CABI’s permission)

The Application of Scanning Electron Microscopy with Energy-Dispersive X-Ray Spectroscopy (SEM-EDX) in Ancient Dental Calculus for the Reconstruction of Human Habits

2017 ◽  
Vol 23 (6) ◽  
pp. 1207-1213 ◽  
Author(s):  
Dana Fialová ◽  
Radim Skoupý ◽  
Eva Drozdová ◽  
Aleš Paták ◽  
Jakub Piňos ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Chemical Elements ◽  
Energy Dispersive ◽  
Dental Calculus ◽  
X Ray ◽  
A Charge ◽  
High Degree ◽  
The 19Th Century ◽  
Scanning Electron

AbstractThe great potential of scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDX) is in detection of unusual chemical elements included in ancient human dental calculus to verify hypotheses about life and burial habits of historic populations and individuals. Elemental spectra were performed from archeological samples of three chosen individuals from different time periods. The unusual presence of magnesium, aluminum, and silicon in the first sample could confirm the hypothesis of high degree of dental abrasion caused by particles from grinding stones in flour. In the second sample, presence of copper could confirm that bronze jewelery could lie near the buried body. The elemental composition of the third sample with the presence of lead and copper confirms the origin of individual to Napoleonic Wars because the damage to his teeth could be explained by the systematic utilization of the teeth for the opening of paper cartridges (a charge with a dose of gunpowder and a bullet), which were used during the 18th and the 19th century AD. All these results contribute to the reconstruction of life (first and third individual) and burial (second individual) habits of historic populations and individuals.

scholarly journals Applying Energy-Dispersive X-Ray Fluorescence Analysis to Detect Tungsten Inclusions in Nuclear Fuel Rod End Plug TIG Welds

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Runqiu Gu ◽  
Jianfeng Cheng ◽  
Wanchang Lai ◽  
Guangxi Wang
Keyword(s):  
Nuclear Fuel ◽  
Fluorescence Analysis ◽  
Simulation Method ◽  
Energy Dispersive ◽  
Tungsten Particle ◽  
X Rays ◽  
X Ray ◽  
Fuel Rod ◽  
Edxrf Analysis ◽  
Relative Standard

This study proposes a new method of detecting tungsten inclusions in nuclear fuel rod upper-end plug welds using energy-dispersive X-ray fluorescence (EDXRF) analysis. The Monte Carlo simulation method was used to simulate the process of detecting tungsten inclusions in nuclear fuel rod upper-end plug welds by the EDXRF. The detectable tungsten particle diameters in the zirconium alloy at different depths in welds and the detection limits of the trace tungsten dispersed in welds were obtained. Then, we constructed an experimental device that uses a CdTe detector with an X-ray tube. The results showed that the relative standard deviation of the net count rate of tungsten K-series characteristic X-rays [W (Kα)] was 1.46%, and the optimum parameters are a tube voltage of 150 kV and current of 0.5 mA. These values were used to perform energy-dispersive X-ray fluorescence analysis. These results were compared to the X-ray radiographic results, which were broadly similar. Furthermore, the results of EDXRF analysis were more legible and reliable than those from X-ray radiographic inspections. This study demonstrates the feasibility of applying EDXRF analysis to detect tungsten inclusions.

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