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Elemental abundances, natural radioactivity and physicochemical records of a southern part of Bangladesh: Implication for assessing the environmental geochemistry

Khan, Rahat, Parvez, Md. Shohel, Jolly, Yeasmin Nahar, Haydar, Md. Abu, Alam, Md. Ferdous, Khatun, Mst. Afifa, Sarker, Md. Mizanur Rahman, Habib, Md. Ahosan, Tamim, Umma, Das, Sopan, Sultana, Shahnaz, Islam, Mohammad Amirul, Naher, Kamrun, Paul, Debasish, Akter, Shirin, Khan, Md. Harunor Rashid, Nahid, Farzana, Huque, Roksana, Rajib, Mohammad, Hossain, Syed Mohammod
Environmental nanotechnology, monitoring & management 2019 v.12 pp. 100225
aluminum, anthropogenic activities, antimony, arsenic, atomic absorption spectrometry, barium, cadmium, calcium, cesium, chlorides, chromium, cobalt, copper, developing countries, electrical conductivity, energy-dispersive X-ray analysis, gamma spectrometry, geochemistry, health hazards, industrialization, iron, lead, manganese, neutron activation analysis, nitrates, pH, phosphates, pollution load, potassium, radioactivity, radionuclides, radium, remediation, risk assessment, river water, rubidium, sediments, sodium, soil, soil sampling, statistical analysis, strontium, sulfates, thorium, titanium, ultraviolet-visible spectroscopy, vanadium, water hardness, zinc, zirconium, Bangladesh
Nowadays developing countries around the globe have been undergoing rapid industrialization which is eventually responsible for environmental contamination. For proper assessment of the level of pollution and the proper application of remediation measures, it is imperative to know the pristine geochemistry of the system. In that regard, environmental-geochemistry of a southern part (Rampal: potential site of rapid industrialization) of Bangladesh, has been investigated for elemental abundances, natural radioactivity and physicochemical records of environmental compartments (soil, sediments, river-water). Nuclear analytical techniques such as instrumental neutron activation analysis, energy dispersive X-ray fluorescence, gamma spectrometry were used for soil sample study whereas atomic absorption spectroscopy, UV–vis spectrophotometer etc. were used for water sample analysis. Twenty six elemental abundances (Na, Al, K, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Cu, Zn, Ga, As, Rb, Sr, Y, Zr, Sb, Cs, Ba, Hf, Ta, W, Pb) including three naturally occurring radionuclides (226Ra, 232Th, 40K) in soil samples and six elemental concentrations (Cu, Zn, Fe, Mn, Cd, Pb), four anionic concentrations (NO3-, SO4-2, PO4-3, Cl-) and four physicochemical parameters (total-alkalinity, total-hardness, electrical-conductivity, pH) of river water were investigated in this study. Along with the experimental data, statistical analysis, several environmental indices (geo-accumulation index, enrichment factor, pollution load index, Potential ecological risk index) and radiological health related indices (radium equivalent activity, radiation hazard index, absorbed dose rate, annual effective dose rate) have been identified for comprehensive assessment of our study site. This study reveals that Rampal receives trivial anthropogenic impact and possesses insignificant ecological and radiological health hazards.