Radiological hazard assessments of natural radionuclides in surface soil in Chau Binh, Vietnam Van-Hao Duong, Bharathi Santhanabharathi, Kumara Perumal Pradhoshini, Tien Chu Trung, Thi Thuy Huong Ngo, Tien-Manh Nguyen, Van-Dung Nguyen, Linh Tin Khac Nguyen, Mohamed Saiyad Musthafa Environmental Pollution and Management, 2025 An assessment of primordial concentrations in soil samples from Chau Binh, Nghe province, Vietnam, was conducted to evaluate potential radiological hazards to local inhabitants. The average activity concentration of the radionuclides determined using HPGe γ-ray spectrometry, were found to be (96.8 kg −1 ) for 238 U, (249.7 kg −1 ) for 232 Th, and (473.5 kg −1 ) for 40 K, being higher than the world average concentration values. The risk indices computed, subsequently, indicate the absorbed dose (42.6 – 362.5 nGyh - 1 ) and annual effective dose equivalents (1.3 mSv) received by individuals to be higher than the permissible limits recommended by UNSCEAR. Such high radiation levels in Chau Binh attributes to the geological characteristics of the soil which is deposited with rich placers of monazite mineral. The composition including orthophosphate, Silimanite, Garnet, Biotite-amphibolite quarsite and marble lenses further adds to the elevated levels of radioactivity in this region. In addition to this, higher concentration of 232 Th than 238 U, indicates the environment to be oxidizing in nature. • A.C of 238 U, 232 Th and 40 K- were beyond the permissible limit. • High radiation levels in soil is due to the presence of monazite. • Significant radiological risks to the inhabitants due to higher AEDE, D R and ELCR.
Spatial distribution and radiological risk assessment of natural radionuclides in sediments from Kayamkulam Estuary, Kerala Bharathi Santhanabharathi, Munawar Suhail Ahmed, A. Chandrasekaran, Marckasagayam Priyadharshini, Kumara Perumal Pradhoshini, Murugavel Aarthi, V. Sathish, Raju Krishnamoorthy, Van-Hao Duong, Ismail M.M. Rahman, Mohamed Saiyad Musthafa Environmental Pollution and Management, 2025 The prevalence and spatial dispersal of primordial radionuclides in natural high background radiation areas (NHBRAs) require systematic environmental and health safety assessment monitoring, with estuarine environments serving as crucial indicators of radionuclide behavior and distribution patterns. This study investigates the spatial distribution of primordial radionuclides ( 238 U, 40 K, and 232 Th) within the sedimentary matrices of Kayamkulam Estuary, Kerala, an NHBRA region proximate to the well-documented Chavara region. Sediment samples were collected from ten locations using systematic random sampling techniques, and radionuclide concentrations were analyzed using a 3″ × 3″ NaI (Tl) scintillation detector coupled with a multi-channel analyzer. Activity concentrations exhibited significant spatial heterogeneity, with mean values of 343.8 Bq/kg for 238 U (range: 111–1834 Bq/kg), 583.9 Bq/kg for 232 Th (range: 118–3511 Bq/kg), and 910.2 Bq/kg for 40 K (range: 592–2599 Bq/kg), substantially exceeding global average values. Radiological risk assessment revealed elevated parameters, with mean radium equivalent activity of 1248.9 Bq/kg, absorbed dose rate of 549.7 nGy/h, and annual effective dose equivalent of 0.67 mSv/y. The mean gamma index of 4.37 and external hazard index of 3.37 exceeded recommended safety thresholds. Geochemical analyses indicated predominantly oxidizing conditions, with Th/U ratios ranging from 3.18 to 6.86. The study provides crucial insights into radionuclide behavior in estuarine environments, emphasizing the interplay of natural geological factors and potential anthropogenic influences, while highlighting the necessity for continuous surveillance and strategic management to alleviate prospective environmental and health hazards. • Activity concentration of primordial radionuclides was associated in the sediments of the Kayamkulam estuary. • Significant elevation in the activity concentration as well as elemental concentration in the sediments. • Ecological risk parameters were well above the world permissible limits. • Spacial heterogeneity can be attributed to its proximity to mining activities and natural background radiation area of Chavara.
Health risk assessment of radionuclides in edible fruits cultivated around natural high background radiation areas of Manavalakurichi, Tamil Nadu, India Munawar Suhail Ahmed, Marckasagayam Priyadharshini, Bharathi Santhanabharathi, Kumara Perumal Pradhoshini, Mohamat Hanifa Shafeeka Parveen, Mehraj Ud Din War, Kannayiram Muthukumaravel, Van-Hao Duong, Mohamed Saiyad Musthafa International Journal of Environmental Analytical Chemistry, 2025 This study aimed to investigate the dynamics of 210Po and 210Pb accumulation in fruits cultivated in the NHBR area of Manavalakurichi, India. Fruits and soil samples were collected from 8 agricultural fields in Manavalakurichi. Standard procedures were followed to analysis the activity concentrations of 210Po and 210Pb. The annual effective ingestion dose and Excessive Lifetime Cancer risk (ELCR) assessment were calculated using established models. The average activity concentrations in soil were 64.74 Bqkg−1 for 210Pb and 9.12 Bqkg−1 for 210Po. Fruit samples showed varying levels of 210Po (1.946 to 6.910 Bqkg−1) and 210Pb (12.750 to 29.125 Bqkg−1), with the highest levels found in coconut (210Po: 6.910 Bqkg−1, 210Pb: 24.625 Bqkg−1) and specific banana varieties (210Po: 1.946 to 4.973 Bqkg−1, 210Pb: 19.750 to 21.500 Bqkg−1). The calculated annual effective radiation doses were 167.9 μSv yr−1 for adults, 239.9 μSv yr−1 for juveniles, and 352.1 μSv yr−1 for children, significantly higher compared to other studies The annual effective dose is well below the acceptable level set by the ICRP and IAEA, which is 1 mSv/year. The ELCR values of 210Po ranged between (8.63 × 10−6 − 4.85 × 10−4) and 210Pb ranged between (1.17 × 10−4− 1.47 × 10−3) which is significantly lower than the ELCR value of 2.5 × 10−3 recommended by the ICRP. The concentration ratio (CR) of 210Po and 210Pb in the fruits cultivated around natural high background radiation areas of Manavalakurichi was determined to assess the transfer of radionuclides from soil to fruits. The study provides valuable insights into the complex pathways of radionuclide accumulation in agricultural systems and contributes to the development of evidence-based policies and practices.
Natural radioactivity estimation and heavy metals concentration in commercial tea brands–a baseline study on human health risk hazards due to tea consumption in Tamilnadu, India Kumara Perumal Pradhoshini, Bharathi Santhanabharathi, Munawar Suhail Ahmed, Marckasagayam Priyadharshini, Murugesan Palanivel, Pandurangan Saranya, Palanishamy Prakasheswar, Van Hao Duong, Subbaiah Krishnakumar, Mohamed Saiyad Musthafa International Journal of Environmental Analytical Chemistry, 2025 In the current study, natural radioactivity and heavy metal concentration were analysed in the most commonly consumed 30 tea brands, available at Tamil Nadu, India. Heavy metal concentration in all the tested tea samples followed the order as Mn > Fe > Pb > Zn > Cu > Ni > Cr > Co > Cd. The concentration of heavy metals was comparatively higher in black tea when compared to that of green tea and indicates that the load of heavy metals gets reduced nearly 10 times after the process of brewing. With respect to radioactivity, the gross alpha activity in all the tea brands were below the detectable limits. The gross beta activity for the black tea ranged from 0.69–1.29 Bq/2 gm and for green tea, it was 0.54–0.86 Bq/2 gm. The gross beta activity was very low in the infused or brewed extracts, when compared to that of the raw tea. The study found the ratio of dissolution to be 4:1, where only 25% of radionuclides got transferred from 2 g of tea to the aqueous extract using 100 ml of boiling water with 5-where minute infusion time. The internal dose received by the people due to their regular tea drinking habits were however below the recommended limit of 0.3–0.8mSv/y for the beta emitters, as prescribed by WHO and below 1 mSv/y as set by ICRP. The quantity of heavy metals that one might uptake by consuming this beverage, was minimal and within the acceptable limits.
Radiological Risk Assessment of Primordial Radionuclides in Sediment: A Case Study of Southeast Chennai, Tamil Nadu, India M Priyadharshini, MS Ahmed, A Chandrasekaran, B Santhanabharathi, ... Regional Studies in Marine Science, 104731 , 2025 2025
Evaluation of 210 Po, 210 Pb, and potentially toxic element concentrations in aquatic environments and polychaetes along the southeast coast of Chennai, Tamil … M Priyadharshini, KP Pradhoshini, A Chandrasekaran, ... International Journal of Environmental Analytical Chemistry 105 (18), 6571-6594 , 2025 2025 Citations: 5
Assessment of heavy metal concentration in pelagic fish species and associated health risks along the Kanyakumari coast, India–a baseline study MH Shafeeka Parveen, M Ud Din War, M Suhail Ahmed, ... International Journal of Environmental Analytical Chemistry 105 (17), 6109-6126 , 2025 2025 Citations: 3
Health risk assessment of radionuclides in edible fruits cultivated around natural high background radiation areas of Manavalakurichi, Tamil Nadu, India M Suhail Ahmed, M Priyadharshini, B Santhanabharathi, KP Pradhoshini, ... International Journal of Environmental Analytical Chemistry 105 (16), 4293-4306 , 2025 2025 Citations: 4
Spatial distribution and radiological risk assessment of natural radionuclides in sediments from Kayamkulam Estuary, Kerala B Santhanabharathi, MS Ahmed, A Chandrasekaran, M Priyadharshini, ... Environmental Pollution and Management 2, 77-86 , 2025 2025 Citations: 11
Assessment of gross alpha, gross beta, 210Po, and 210Pb in rice and their associated health risks in Tamil Nadu, India: A baseline study M Priyadharshini, B Santhanabharathi, A Chandrasekaran, MS Ahmed, ... Applied Radiation and Isotopes, 112253 , 2025 2025
Ecological risk assessment due to heavy metals prevalence in the sediments of Kayamkulam estuary, Kerala, India B Santhanabharathi, M Suhail Ahmed, KP Pradhoshini, M Priyadharshini, ... International Journal of Environmental Analytical Chemistry 105 (12), 2687-2707 , 2025 2025 Citations: 8
Radioecological dynamics of primordial radionuclides in rice agroecosystems: A comprehensive assessment of transfer pathways and health risk assessment in the Manavalakurichi NHBRA MS Ahmed, B Santhanabharathi, A Chandrasekaran, KP Pradhoshini, ... Science of The Total Environment 994, 180029 , 2025 2025 Citations: 2
Health risk assessment of 210Po and 210Pb due to consumption of dried fish from natural high background radiation areas of Kanyakumari coast, Tamil Nadu, India JKR Khan, R Thangarasu, MS Ahmed, M Priyadharshini, ... Marine Pollution Bulletin 217, 118040 , 2025 2025 Citations: 3
Natural radioactivity estimation and heavy metals concentration in commercial tea brands–a baseline study on human health risk hazards due to tea consumption in Tamilnadu, India KP Pradhoshini, B Santhanabharathi, M Suhail Ahmed, M Priyadharshini, ... International Journal of Environmental Analytical Chemistry 105 (9), 2174-2192 , 2025 2025 Citations: 4
Radiological hazard assessments of natural radionuclides in surface soil in Chau Binh, Vietnam VH Duong, B Santhanabharathi, KP Pradhoshini, TC Trung, TTH Ngo, ... Environmental Pollution and Management , 2025 2025 Citations: 4
Source, fate and transfer of primordial radionuclides as potential contaminants in environmental matrices of high and low background radiation areas–a critical review B Santhanabharathi, KP Pradhoshini, M Suhail Ahmed, M Priyadharshini, ... International Journal of Environmental Analytical Chemistry 105 (4), 954-980 , 2025 2025 Citations: 33
Radiation doses received by humans in their dwellings–a baseline report on radionuclides exposure from construction materials used in Chennai, Tamil Nadu, India KP Pradhoshini, B Santhanabharathi, A Chandrasekaran, MS Ahmed, ... Journal of Hazardous Materials 484, 136754 , 2025 2025 Citations: 5
Assessment of natural radioactivity levels in polychaetes along southeast coast of Chennai, Tamil Nadu, India–a pilot study M Priyadharshini, M Suhail Ahmed, B Santhanabharathi, KP Pradhoshini, ... Toxicological & Environmental Chemistry 107 (1), 78-97 , 2025 2025 Citations: 1
Heavy metals toxicity in edible bivalves and risk exposure to humans through its consumption from Adyar Estuary, Tamilnadu, India–A baseline study TS Chandrasekaran, J Milton, B Santhanabharathi, KP Pradhoshini, ... Regional Studies in Marine Science 79, 103854 , 2024 2024 Citations: 17
Physalis Genus, a Plant Source against Breast Cancer on MCF-7 Cell Line: A Systematic Review SP Sethuraman, S Velemurugan, K Raju, NK Velayutham, MS Ahmed, ... Current Pharmacology Reports 10 (6), 454-466 , 2024 2024 Citations: 1
Human health risk assessment due to consumption of dried fish in Chennai, Tamil Nadu, India: a baseline report M Priyadharshini, MS Ahmed, KP Pradhoshini, B Santhanabharathi, ... Environmental Science and Pollution Research 31 (29), 41388-41401 , 2024 2024 Citations: 21
Microbial consortium and impact of industrial mining on the Natural High Background Radiation Area (NHBRA), India–Characteristic role of primordial radionuclides in influencing … KP Pradhoshini, B Santhanabharathi, M Priyadharshini, MS Ahmed, ... Environmental Research 244, 118000 , 2024 2024 Citations: 9
Radiological hazard assessment of 210 Po in freshwater mussels ( Sinanodonta jourdyi ) and golden apple snail ( Pomacea canaliculata ) in Vietnam VH Duong, TC Trung, TX Pham-Thi, TN Ngoc, B Santhanabharathi, ... Environmental Science and Pollution Research 31 (10), 14949-14958 , 2024 2024 Citations: 5
Biological effects of ionizing radiation on aquatic biota–A critical review KP Pradhoshini, M Priyadharshini, B Santhanabharathi, MS Ahmed, ... Environmental toxicology and pharmacology 99, 104091 , 2023 2023 Citations: 30
MOST CITED SCHOLAR PUBLICATIONS
Source, fate and transfer of primordial radionuclides as potential contaminants in environmental matrices of high and low background radiation areas–a critical review B Santhanabharathi, KP Pradhoshini, M Suhail Ahmed, M Priyadharshini, ... International Journal of Environmental Analytical Chemistry 105 (4), 954-980 , 2025 2025 Citations: 33
Biological effects of ionizing radiation on aquatic biota–A critical review KP Pradhoshini, M Priyadharshini, B Santhanabharathi, MS Ahmed, ... Environmental toxicology and pharmacology 99, 104091 , 2023 2023 Citations: 30
Human health risk assessment due to consumption of dried fish in Chennai, Tamil Nadu, India: a baseline report M Priyadharshini, MS Ahmed, KP Pradhoshini, B Santhanabharathi, ... Environmental Science and Pollution Research 31 (29), 41388-41401 , 2024 2024 Citations: 21
Potential biomarker of phenol toxicity in freshwater fish C. mrigala: Serum cortisol, enzyme acetylcholine esterase and survival organ gill K Muthukumaravel, V Kanagavalli, KP Pradhoshini, N Vasanthi, ... Comparative Biochemistry and Physiology Part C: Toxicology & Pharmacology … , 2023 2023 Citations: 20
Heavy metals toxicity in edible bivalves and risk exposure to humans through its consumption from Adyar Estuary, Tamilnadu, India–A baseline study TS Chandrasekaran, J Milton, B Santhanabharathi, KP Pradhoshini, ... Regional Studies in Marine Science 79, 103854 , 2024 2024 Citations: 17
Sublethal effects of phenol on histology of selected organs of freshwater fish Mystus vittatus K Muthukumaravel, N Vasanthi, A Stalin, L Alam, B Santhanabharathi, ... Environmental Science and Pollution Research 28 (11), 13752-13760 , 2021 2021 Citations: 15
Spatial distribution and radiological risk assessment of natural radionuclides in sediments from Kayamkulam Estuary, Kerala B Santhanabharathi, MS Ahmed, A Chandrasekaran, M Priyadharshini, ... Environmental Pollution and Management 2, 77-86 , 2025 2025 Citations: 11
Microbial consortium and impact of industrial mining on the Natural High Background Radiation Area (NHBRA), India–Characteristic role of primordial radionuclides in influencing … KP Pradhoshini, B Santhanabharathi, M Priyadharshini, MS Ahmed, ... Environmental Research 244, 118000 , 2024 2024 Citations: 9
Ecological risk assessment due to heavy metals prevalence in the sediments of Kayamkulam estuary, Kerala, India B Santhanabharathi, M Suhail Ahmed, KP Pradhoshini, M Priyadharshini, ... International Journal of Environmental Analytical Chemistry 105 (12), 2687-2707 , 2025 2025 Citations: 8
Evaluation of 210 Po, 210 Pb, and potentially toxic element concentrations in aquatic environments and polychaetes along the southeast coast of Chennai, Tamil … M Priyadharshini, KP Pradhoshini, A Chandrasekaran, ... International Journal of Environmental Analytical Chemistry 105 (18), 6571-6594 , 2025 2025 Citations: 5
Radiation doses received by humans in their dwellings–a baseline report on radionuclides exposure from construction materials used in Chennai, Tamil Nadu, India KP Pradhoshini, B Santhanabharathi, A Chandrasekaran, MS Ahmed, ... Journal of Hazardous Materials 484, 136754 , 2025 2025 Citations: 5
Radiological hazard assessment of 210 Po in freshwater mussels ( Sinanodonta jourdyi ) and golden apple snail ( Pomacea canaliculata ) in Vietnam VH Duong, TC Trung, TX Pham-Thi, TN Ngoc, B Santhanabharathi, ... Environmental Science and Pollution Research 31 (10), 14949-14958 , 2024 2024 Citations: 5
Health risk assessment of radionuclides in edible fruits cultivated around natural high background radiation areas of Manavalakurichi, Tamil Nadu, India M Suhail Ahmed, M Priyadharshini, B Santhanabharathi, KP Pradhoshini, ... International Journal of Environmental Analytical Chemistry 105 (16), 4293-4306 , 2025 2025 Citations: 4
Natural radioactivity estimation and heavy metals concentration in commercial tea brands–a baseline study on human health risk hazards due to tea consumption in Tamilnadu, India KP Pradhoshini, B Santhanabharathi, M Suhail Ahmed, M Priyadharshini, ... International Journal of Environmental Analytical Chemistry 105 (9), 2174-2192 , 2025 2025 Citations: 4
Radiological hazard assessments of natural radionuclides in surface soil in Chau Binh, Vietnam VH Duong, B Santhanabharathi, KP Pradhoshini, TC Trung, TTH Ngo, ... Environmental Pollution and Management , 2025 2025 Citations: 4
Assessment of heavy metal concentration in pelagic fish species and associated health risks along the Kanyakumari coast, India–a baseline study MH Shafeeka Parveen, M Ud Din War, M Suhail Ahmed, ... International Journal of Environmental Analytical Chemistry 105 (17), 6109-6126 , 2025 2025 Citations: 3
Health risk assessment of 210Po and 210Pb due to consumption of dried fish from natural high background radiation areas of Kanyakumari coast, Tamil Nadu, India JKR Khan, R Thangarasu, MS Ahmed, M Priyadharshini, ... Marine Pollution Bulletin 217, 118040 , 2025 2025 Citations: 3
Radioecological dynamics of primordial radionuclides in rice agroecosystems: A comprehensive assessment of transfer pathways and health risk assessment in the Manavalakurichi NHBRA MS Ahmed, B Santhanabharathi, A Chandrasekaran, KP Pradhoshini, ... Science of The Total Environment 994, 180029 , 2025 2025 Citations: 2
Assessment of natural radioactivity levels in polychaetes along southeast coast of Chennai, Tamil Nadu, India–a pilot study M Priyadharshini, M Suhail Ahmed, B Santhanabharathi, KP Pradhoshini, ... Toxicological & Environmental Chemistry 107 (1), 78-97 , 2025 2025 Citations: 1
Physalis Genus, a Plant Source against Breast Cancer on MCF-7 Cell Line: A Systematic Review SP Sethuraman, S Velemurugan, K Raju, NK Velayutham, MS Ahmed, ... Current Pharmacology Reports 10 (6), 454-466 , 2024 2024 Citations: 1