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All Journal JURNAL ILMIAH PENDIDIKAN FISIKA AL BIRUNI International Journal of Hydrological and Environmental for Sustainability
Dewalkar, Snehal V
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Education Electrical & Electronics Engineering Environmental Science Physics

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Alkalinity, Major and Trace Elements as Hydrological Tracers in Different Seasons: Implications for the Origin of Hot Springs in Non-Volcanic Areas, Odisha, India Dewalkar, Snehal V; Shinde, Nishant; Kaur, Manmeet; Bhuie, Prabhjot Singh; Hadap, Arti; Kshetri, Shivmurti B
International Journal of Hydrological and Environmental for Sustainability Vol. 3 No. 3 (2024): International Journal of Hydrological and Environmental for Sustainability
Publisher : CV FOUNDAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/ijhes.v3i3.518

Abstract

During the rainy season, surface water can infiltrate and mix with groundwater, making it difficult to identify different groundwater sources. In addition, mixing of water from different sources over time can obscure the original characteristics of groundwater. In this study, we used geochemical analyses such as alkalinity, major elements, hydrological modelling and long-term monitoring before, during and after the rainy season to understand the changes in concentrations, and determine the origin of groundwater sources despite different seasonal conditions. The data from this study was taken from a previous study and examined 18 water samples with different locations and weather conditions. Determination of 9 elements including alkalinity and trace elements was conducted as the main elements in this study. In the experiment, water temperature, pH, alkalinity, and free CO content were measured in situ from non-volcanic hot water, Odisha, India. In the process, the water was put into two polypropylene bottles, and cation and anion analyses were conducted in the laboratory. The results showed that seasonal differences clearly affected the changes in alkalinity concentration of each hot spring. However, hot springs with higher alkalinity experienced larger changes. In contrast, the analysed chlorine (Cl) concentrations < 100 mg/L were more susceptible to shifts due to monsoon, whereas Cl concentrations > 100 mg/L were more homogeneous despite the influence of monsoon (seasonal differences). Differences in the rainy season affected the concentration changes in Attri, Tarabalo and Deulajhari hot springs. Meanwhile, hot springs dominated by meteoric water such as Badaberena, Taptapani and Boden are less affected. This proves that Attri, Tarabalo and Deulajhari hot springs originate and are dominated by deep groundwater.
Photoluminescence and Characterization of Eu2+ Doped Ca10(PO4)6F2 phosphor Panse, Vishal R; Saregar, Antomi; Dewalkar, Snehal V; Waghare, S. M.; Dixit, Aparna
Jurnal Ilmiah Pendidikan Fisika Al-Biruni Vol 14 No 2 (2025): Jurnal Ilmiah Pendidikan Fisika Al-Biruni
Publisher : Universitas Islam Negeri Raden Intan Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/jipfalbiruni.v14i2.24652

Abstract

Efficient blue-emitting phosphors are crucial for the development of near-ultraviolet (near-UV) pumped white light-emitting diode (LED) devices. In this study, Ca10(PO4)6F2 triggered with Eu2+ phosphors were successfully synthesized via a facile combustion synthesis route in an open-air environment, enabling the formation of homogeneous and crystalline fine powders. The structural and morphological characteristics were analyzed using X-ray diffraction (XRD) and scanning electron microscopy (SEM), confirming the formation of a single-phase apatite structure with well-defined particle morphology. Photoluminescence (PL) properties were investigated under ultraviolet excitation. The synthesized Ca10(PO4)6F2:Eu2+ phosphors exhibited an intense blue emission centered at 432 nm when excited at 348 nm, which is attributed to the allowed 4f7  4f65d1 electronic transition of Eu2+ ions. The strong blue emission in the near-UV excitation region indicates effective luminescence performance of the host lattice. These results demonstrate that Ca10(PO4)6F2:Eu2+ phosphors prepared by the combustion method are promising candidates for blue-emitting components in near-UV pumped white LED applications.
Co-Authors Antomi Saregar Bhuie, Prabhjot Singh Dixit, Aparna Hadap, Arti Kshetri, Shivmurti B Manmeet Kaur Panse, Vishal R Shinde, Nishant Waghare, S. M.