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Quantifying of Radioactive Elements in Soil, Water and Plant Samples Using Laser Induced Breakdown Spectroscopy (LIBS) Technique
Quantifying of Radioactive Elements in Soil, Water and Plant Samples Using Laser Induced Breakdown Spectroscopy (LIBS) Technique
Abstract:- In this study, the laser-induced breakdown effects in addition to radiation burns (similar to thermal burns)
spectroscopy (LIBS) technique was applied to detect These effects depending on the type of radiation, the exposure
radioactive elements on surface soil, plant leaves dose, the time exposure, and the sensitivity of the exposed
(Tamarindus indica), and flow water collected from Bala, tissues [4,5].
Mayo-Kebbi Quest, Chad. The survey process indicates
that the samples contain radioactive elements U, Fr, Ce, Laser-induced breakdown spectroscopy (LIBS) involves
Ac, Cm, Tb, and Pm. The concentrations of the detected the collection and processing of the spectral signature
elements in samples were determined using the resulting from a high-irradiance pulsed laser generated plasma
calibration curve method, while the plasma temperatures containing an analyte [6-8]. It is also regarded as a sensitive
(Texc) and electron density (Ne) of the detected radioactive technique that can detect most elements in the range of μg g-
elements were calculated from Boltzmann linear plots. 1[9]. The purpose of this study is to determine the radioactive
Except for uranium, all elements in the soil sample had elements contained in soil, water, and plant (Tamarindus
amounts below the acceptable limit. The concentration of indica) samples taken in Bala, Mayo-Kebbi Quest, Chad. The
uranium in soil samples ranges from 0.024236 to 0.23439 presence of these elements can have major biological
ppm, with a safety limit of 0.03 ppm. The average plasma consequences.
temperature Texc for uranium (U) is 700, while the
electron density Ne is 500 cm-3. II. METHOD
Keywords:- LIBS, Plasma, Radioactive, Tamarindus Indica, Samples collection: In present work, a total of three
Temperature and Electron Density. samples of soil, water, and plan leaves (Tamarindus indica)
have been collected from Bala, Mayo-Kebbi Quest, Chad (9o,
I. INTRODUCTION 21'48" N14o54'36" E). The sample of soil was taken from the
surface; the plant sample was Tamarindus indica leaves; and
Radioactive materials are substances that contain the water sample was running water. All samples were used
unstable nuclei that spontaneously emit radiation in the form without treatment.
of alpha particles, beta particles, or gamma rays in order to
stabilize themselves in process known as radioactive decay LIBS Setup: The analysis of (surface soil, Plant
[1,2]. These materials can be found naturally or artificially (Tamarindus indica) and water) samples was carried out using
produced in laboratories [3]. Exposure to radiation cause set up depicted schematically in Fig (1).
Acute Radiation Syndrome (ARS) (nausea, vomiting,
diarrhea, and weakness. Exposure to radiation cause Acute
Radiation Syndrome (ARS), it is increasing the risk of
developing cancer and genetic Effects (DNA mutations),
likewise it can lead to organ damage Also, it can cause
cardiovascular disease and cataracts as long-term health
(1)
Fig 2 LIBS Spectrum of Soil, Water and Plant Samples Irradiated with100 mJ
Fig 3 Calibration Curve for Radioactive Elements Detected in Soil, Water and Plant Samples Obtained using
Analytic Calibration Function
Table 1 Analyzed Data of Libs Spectra Soil, Water and Plant Samples Irradiated by 400 Mj
The temperature and electron density were evaluated using the Boltzmann plot by plotting ln (I λ/g jAij) as a function of
energy (Ej/kB) [19,20], as displayed in figure (4).
Fig 4 Shows a Typical Linear Boltzmann Plot for Calculating Plasma Temperature for Radioactive Elements
Exist on Soil, Water, and Plant Samples
The Plasma Electronic Density can be Determined using the Following Relation:
(4)
Where T is the Plasma Temperature (K) and Eij is the transition energy (eV) [21,22].
Table 1 Plasma Temperature and Electron Density of Radioactive Elements Detected in Soil,
Water and Plant Samples Irradiated by 400 Mj
samples
Elements
Cm I UI Ce I Fr I Ac Tb Pm
4223
(1020cm-3) (Ko) (1020cm-3) (Ko) (1020cm-3) (Ko)
Texc
9.509
Ne
Ne
Ne
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