Radioactive heat production characterization of Ar-Rassafeh Badyieh area (area-2), Syria by using aerial gamma ray spectrometric and fractal modeling techniques

Aerial gamma-ray spectrometric technique is used herein to evaluate the radioactive heat production (HP) of Ar-Rassafeh Badyieh Area (Area-2), Syria. The nine already established lithological scored units of Area-2 have been separately characterized for the heat production HP parameter. The Concentration-number (C-N) model and the log-log plots associated with fractal technique are proposed and applied as a new approach to map the measured equivalent uranium (eU), the equivalent thorium (eTh), and potassium (K%) and the computed heat production (HP) of Area-2. The HP of Area-2 varies between a minimum of 0.06 and a maximum of 4.28 ?w/m3 with an average of 0.548 ?w/m3 and a standard deviation of 0.27?w/m3. The highest observed HP values are related to the phosphatic environments represented by two lithological scored units A and B.

Comparative Studies of Lead and Chromium Concentration in Red Chili and Turmeric Powder

The red chili and turmeric powder available commercially in Lahore supermarkets which were randomly analyzed to evaluate the lead (Pb), and chromium (Cr) concentration by atomic absorption spectrometric technique. Lead and chromium were found to be in the ranges of 0.0050-0.01 ppm and 0.0430-0.1482 ppm, respectively. The mean concentration of lead in the red chili and turmeric powders were found to be 2.6 mg/Kg and 5.3 mg/Kg respectively, while that of the chromium was found to be 0.0419 mg/Kg and 0.1142 mg/Kg respectively. Levels of both these metals (lead and chromium) are therefore lower in the red chili compared to the turmeric powder. Also, both the samples are comparatively rich in lead as compared to chromium.

XRF ANALYSIS OF ARSENIC AND SELECTED METALS IN CONTAMINATED SAND FROM THE DISMANTLING OF INDUSTRIAL DISTILLATION PLANTS

This paper refers to the application of XRF method for the simultaneous determination of arsenic and selected metals from waste samples resulted from the dismanlting of distilleries in the perimeter of Azomures S.A., Mures County, Romania. The dismantling operation was carried out by a specialized Romanian company, and from this operation resulted several refractory construction wastes, such as sands with a very high content of arsenic and its chemical compounds. In order to determine the arsenic and other metals concentration, the energy-dispersive X-ray fluorescence (ED-XRF) spectrometric technique was employed. Application of the ED-XRF method was performed in an accredited laboratory for the determination of toxic substances from various samples, using a Genius portable XRF (p-XRF) spectrometer manufactured by Skyray Instruments Inc.

Integrated Cross Sections of the Photo-Neutron Reactions Induced on \(^{197}\)Au with 60 \(\text{MeV}\) Bremsstrahlung

Seven photo-neutron reactions 197Au(γ,xn)197-xAu (with x=1-7) produced by the bremsstrahlung end-point energy of 60 MeV were identified. In this work, we focus on the measurement of integrated sections. Experiments were carried out based on the activation method in combination with off-line gamma-ray spectrometric technique. The integrated cross sections of the investigated reactions were determined relative to that of the monitoring reaction 197Au(γ,n)196Au. To validate the experimental results, theoretical predictions were also made using the computer code TALYS 1.9. The current integrated cross-sections of the 197Au(γ,xn)197-xAu reactions with 60 MeV bremsstrahlung end point energy are measured for the first time.