{"title":"Isotopes of feather art: location, husbandry, production and antiquity.","authors":"Noreen Tuross, Linda M Reynard","doi":"10.1080/10256016.2026.2647478","DOIUrl":"https://doi.org/10.1080/10256016.2026.2647478","url":null,"abstract":"<p><p>The provenance, antiquity, duration of production, animal husbandry and geographical location of materials used to make one of the largest feather art objects ever produced are explored via analysis of four stable isotopes (<i>δ</i><sup>2</sup>H, <i>δ</i><sup>18</sup>O, <i>δ</i><sup>13</sup>C and <i>δ</i><sup>15</sup>N) combined with radiocarbon measurements. We document the monotonously fed rearing of thousands of captive macaws in the Amazon region and the acquisition of camelid fibres from the high Andes to produce ninety-six large feather panels. Multiple radiocarbon dates from both feathers and fibres confirm the Wari (600-100 AD) origin of the panels and suggest a short and intensive production schedule. Stable isotopes document the collection of materials that took the artisans over hundreds of kilometres from the Amazon to near the Pacific coast.</p>","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":" ","pages":"1-13"},"PeriodicalIF":1.4,"publicationDate":"2026-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147609060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Assessment of uranium with toxicological and radiological implications in potable water sources of the eastern region of Kumaun Himalaya, India.","authors":"Taufiq Ahamad, Om Prakash Nautiyal, Prakhar Singh, Rohit Singh Sajwan, Manish Joshi, Abhay Anand Bourai","doi":"10.1080/10256016.2026.2644989","DOIUrl":"https://doi.org/10.1080/10256016.2026.2644989","url":null,"abstract":"<p><p>In the present investigation, a total of 62 potable water samples were analyzed to assess uranium concentrations and the associated toxicological and radiological risks from the eastern region of Kumaun Himalaya, India, using LED fluorometry technique. The Oakton Benchtop device was used to measure physicochemical parameters, including pH, temperature, total dissolved solids and electrical conductivity. Uranium concentration in water samples ranged from 0.5 ± 0.1 to 96.1 ± 0.7 µg/L, with a mean value of 23.5 ± 27.7 µg/L; with 16 % of the water samples exceeding the provisional guideline value (30 µg/L) provided by the World Health Organization. Comparative analysis reveals that hand-pumped water showed a higher average (40.3 µg/L) than tap and spring water sources. Nevertheless, all samples remain below the radiological-based limit set by the Atomic Energy Regulatory Board. Radiological risks were evaluated by calculating annual effective doses and excess cancer risk. Results indicated that estimated annual effective ingestion doses for different age groups and genders were comparatively higher in males. Further, chemical risks were quantified by estimating the lifetime average daily dose and health quotient. The average excess cancer risk was found to be 3.23 × 10<sup>-5</sup>, with lifetime average daily dose ranging from 0.003 to 2.75 µg/kg/day, averaging 0.66 µg/kg/day. The investigation found no significant chemical toxicity from uranium in water, as the computed health quotient was below 1. A strong correlation was observed between uranium and total dissolved solids, with a Pearson's <i>r</i> value of 0.82. Statistical model, including ANOVA, indicates that the rock/soil types of the study area contribute to the uranium distribution over the region. Further, cluster analysis was also performed on the obtained data. The findings of the present study indicated that the sedimentation zone near river confluences shows elevated uranium content, likely due to the leaching of soil/rocks from the upper Himalayan terrain.</p>","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":" ","pages":"1-27"},"PeriodicalIF":1.4,"publicationDate":"2026-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147485912","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mohammed S Jalal, Jahfer M Smail, Zakariya A Hussein
{"title":"Assessment of radioactivity levels in poultry feed from various sources for chicken production in Erbil Province, Iraq.","authors":"Mohammed S Jalal, Jahfer M Smail, Zakariya A Hussein","doi":"10.1080/10256016.2026.2641134","DOIUrl":"https://doi.org/10.1080/10256016.2026.2641134","url":null,"abstract":"<p><p>This study investigates the activity concentrations of naturally occurring radionuclides (²²⁶Ra, ²³²Th, and ⁴⁰K) in poultry feed samples collected from thirty different commercial and local production sites across Erbil Province, Iraq. Using high-purity germanium (HPGe) gamma-ray spectrometry, a total of 30 poultry feed samples were analyzed to assess radiological safety and evaluate potential exposure risks through the poultry food chain. The measured activity concentrations ranged from 0.18-5.27 Bq kg<sup>-</sup>¹ for ²²⁶Ra, below detection to 5.16 Bq kg<sup>-</sup>¹ for ²³²Th, and 46.12-268.20 Bq kg<sup>-</sup>¹ for ⁴⁰K. The mean concentrations of 1.556 Bq kg<sup>-</sup>¹ (²²⁶Ra), 1.34 Bq kg<sup>-</sup>¹ (²³²Th), and 167.52 Bq kg<sup>-</sup>¹ (⁴⁰K) were all moderately low compared to other countries' work. Regional variation in radionuclide levels was observed, particularly for ²²⁶Ra and ²³²Th, with the highest levels detected in samples from Pirmam, potentially due to geogenic factors or mineral-based additives. Descriptive statistics and histogram analysis showed that ⁴⁰K concentrations followed a near-Gaussian distribution, while ²²⁶Ra and ²³²Th exhibited positive skewness. Comparative analysis with data from other countries confirmed that the activity concentrations in this study were significantly lower than those reported in Nigeria, Serbia, and Uganda. This research provides a vital radiological baseline for poultry feed in the region and demonstrates that the feeds currently used in Erbil pose no significant radiological hazard to poultry or human health. These findings emphasize the importance of continued surveillance of feed materials, especially in regions with diverse geological sources, to ensure food chain safety and compliance with international radiological protection standards.</p>","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":" ","pages":"1-14"},"PeriodicalIF":1.4,"publicationDate":"2026-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147467159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Quantifying the radiological hazards due to the naturally occurring radionuclides in specific agricultural land in the Tangail district of Bangladesh.","authors":"Shikha Pervin, Tanzina Akter, Kaniz Fatema Kakolee, Shanjib Karmaker, Tanzeem Tahmeed Reza, Selina Yeasmin, Mayeen Uddin Khandaker","doi":"10.1080/10256016.2026.2640111","DOIUrl":"10.1080/10256016.2026.2640111","url":null,"abstract":"<p><p>The rapid development of industries near forest and river has led to concerns about the toxic metal contamination of agricultural land following the release of radiotoxic elements. The study area, characterized by agricultural land influenced by the Jamuna River, Madhupur forest and numerous industries, has been assessed for concentrations of natural radionuclides and associated radiological hazards. A total of 48 agricultural soil samples were collected from twelve upazilas of the Tangail district. The measurement was performed using gamma-ray spectrometry, employing a high-purity germanium (HPGe) detector. The measured mean activity concentrations of ²²<sup>6</sup>Ra, ²³²Th, and <sup>40</sup>K in soil samples were found to be 25.63 ± 5.00, 43.63 ± 2.00, and 451 ± 15 Bq kg<sup>-</sup>¹, respectively. The mean radium equivalent activity, absorbed dose rate for indoor and outdoor environments, and indoor and outdoor annual effective doses were lower than the world average value. Hazard indices such as external hazard index (H<sub>ex</sub>), and internal hazard index (H<sub>in</sub>) were found to be less than unity. However, the gamma index (I<sub>γ</sub>) was found higher than unity for some locations. The annual gonadal dose equivalent (AGDE) and excess lifetime cancer risk (ELCR) exceeded the global average. These findings are likely attributed to the natural environmental features of Tangail, including the geological characteristics of the Jamuna River, Madhupur forest, and industrial regions. The presented data may serve as the baseline radioactivity data for this area and may be useful for assessing any future radiological risk of this region.</p>","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":" ","pages":"1-23"},"PeriodicalIF":1.4,"publicationDate":"2026-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147432738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Measurement of radon concentrations in vegetable and soil, and evaluation of lifetime cancer risk using a CR-39 detector.","authors":"Khabat Kamaran Muhamad, Najeba Farhad Salih","doi":"10.1080/10256016.2025.2580681","DOIUrl":"https://doi.org/10.1080/10256016.2025.2580681","url":null,"abstract":"<p><p>Exposure to radon contributes to more than 50 % of the total radiation dose received from natural sources by human beings; therefore, radon measurements are crucial in monitoring human health and safety. It can migrate from the soil into plants, further contributing to human exposure through the consumption of contaminated vegetables. The present study aims to determine the concentration of radon in 18 different types of vegetable collected from Bazyan location in Kurdistan Iraqi region which are frequently consumed because most of the population in Kurdistan depend on those vegetable foods. In methodology, CR-39 detector and PVC tube were used to record the tracks of alpha particles released from the radon content within the vegetable samples. The results showed that the concentration levels of radon in vegetable samples ranged from the highest value 310.963 Bq m<sup>-3</sup> in the green peppers sample to lowest value 9.830 Bq m<sup>-3</sup> in the wild rocket sample, with an average concentration in the samples of 161.965 Bq m<sup>-3</sup>. Therefore, the concentrations of radon in vegetable samples were lower than the global permissibility limit of exposure to radon according to the International Commission on Radiological Protection and the International Atomic Energy Agency (200-800 Bq m<sup>-3</sup>). Results were also found to be lower than the 400 Bq m<sup>-3</sup> according to ICRP in foods; therefore, this will not form any risk on human life.</p>","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":" ","pages":"1-18"},"PeriodicalIF":1.4,"publicationDate":"2026-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147372530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Stable isotope analysis of root water uptake in urban endemic plants of north-central Texas using centrifugation.","authors":"Suprina Shrestha, Ricardo Sánchez-Murillo","doi":"10.1080/10256016.2026.2633177","DOIUrl":"https://doi.org/10.1080/10256016.2026.2633177","url":null,"abstract":"<p><p>Root water uptake (RWU) is fundamental to plant function and ecosystem processes, yet isotopic inconsistencies between plant compartments challenge interpretations of water sources. In this study, we examined RWU patterns of three urban endemic species: boxelder maple (<i>Acer negundo)</i>, cherry laurel (<i>Prunus caroliniana</i>), and elderberry <i>(Sambucus canadensis)</i>, within a humid, subtropical environment of north-central Texas (USA). Mobile water was extracted from stems, roots, and soils using centrifugation, and analyzed for δ¹⁸O, δ<sup>2</sup>H, and <i>d</i>-excess. Seasonal precipitation variability was evident across all species, with higher total water content and mobile extractable water in spring and reduced extracted values during summer months. Isotopic values within roots and stems were strongly modulated by seasonal hydroclimatic conditions, particularly (a) larger precipitation inputs and soil moisture availability during the spring season and (b) higher evaporative demand during summer and early fall. Across all species, precipitation inputs during the spring growing season promoted relatively small δ¹⁸O offsets (±1 ‰) between throughfall, soils, roots, and stems, suggesting a strong connectivity between meteoric inputs, soil moisture availability, and RWU. During summer and early fall, evapoconcentration resulted in higher δ¹⁸O offsets between throughfall, roots, and stems. In winter, deciduous species (boxelder maple and elderberry) showed larger δ¹⁸O offsets between throughfall, roots, and stems. This indicates the existence of a 'legacy-type effect' (i.e. older water stored) from the summer season. Longitudinal analysis also revealed δ¹⁸O and <i>d</i>-excess heterogeneity along the root system. These findings highlight the potential of centrifugation as a reliable method for extracting mobile water in stems and roots in a sub-tropical environment, while also emphasising the natural complexity of isotopic heterogeneity within plant compartments.</p>","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":" ","pages":"1-17"},"PeriodicalIF":1.4,"publicationDate":"2026-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147369445","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Dang Hoai Nhon, Hoang Thi Chien, Le Nhu Sieu, Nguyen Van Phu, Nguyen Van Phuc, Nguyen Dinh Tung, Nguyen Dac Ve, Tran Duc Thanh, Nguyen Hoang, Lai Thi Bich Thuy, Nguyen Ngoc Anh, Bui Van Vuong, Nguyen Thi Mai Luu, Duong Thanh Nghi, Dinh Hai Ngoc, Nguyen Van Thao, Bui Thi Thanh Loan
{"title":"Characteristics of radioactivity and radiological risk indices in beach sediments from northern Vietnam.","authors":"Dang Hoai Nhon, Hoang Thi Chien, Le Nhu Sieu, Nguyen Van Phu, Nguyen Van Phuc, Nguyen Dinh Tung, Nguyen Dac Ve, Tran Duc Thanh, Nguyen Hoang, Lai Thi Bich Thuy, Nguyen Ngoc Anh, Bui Van Vuong, Nguyen Thi Mai Luu, Duong Thanh Nghi, Dinh Hai Ngoc, Nguyen Van Thao, Bui Thi Thanh Loan","doi":"10.1080/10256016.2026.2638242","DOIUrl":"https://doi.org/10.1080/10256016.2026.2638242","url":null,"abstract":"<p><p>The beach sediments in northern Vietnam were analysed for grain size, minerals and radionuclides in 24 samples. Grain size was measured by sieving, minerals by XRD and radionuclides by gamma-ray spectrometry. The radiological risk indices Ra<sub>eq</sub>, ADR, AEDE, I<sub>γr</sub>, AUI, H<sub>ex</sub>, AGDE and ELCR were evaluated. There were three types of sediment: very fine sand, fine sand and medium sand. Very fine sand with a mean diameter (Md) of 105 µm, fine sand with an Md of 192 µm and medium sand with an Md of 330 µm were used. The percentages of minerals with quartz, illite, feldspar, kaolinite, chlorite, goethite, gibbsite and amphibole contents were 80.6, 5.4, 3.3, 2.4, 2.0, 2.0, 0.2 and 0.8 %, respectively. The average radioactivity of <sup>238</sup>U, <sup>226</sup>Ra, <sup>232</sup>Th and <sup>40</sup>K was 23.3, 23.1, 27.1 and 214.9 Bq/kg, respectively. The radiological risk indices, including Ra<sub>eq</sub>, ADR, AEDE, I<sub>γr</sub>, AUI, H<sub>ex</sub>, AGDE and ELCR, were 78.38 Bq/kg, 38.8 nGy/h, 0.04 mSv/yr, 0.57, 0.56, 0.21, 256.1 µSv/y and 0.16 × 10<sup>-3</sup>, respectively. The origin of radioisotopes is mainly in sediments and from mainland, which are influenced by minerals and grain sizes. Additionally, another source from seawater or the atmosphere plays a minor role. The average radioactivity and radiological risk indices were lower than the global average and the recommendation of UNSCEAR, so sediments were safe for humans and organisms.</p>","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":" ","pages":"1-24"},"PeriodicalIF":1.4,"publicationDate":"2026-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147348298","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Duong Van Thang, Dang Duc Nhan, Dao Dinh Thuan, Fernando P Carvalho, Pham Thi Huong, Do Thi Trang, Nguyen Dang Minh, Pham Tuan Nam, Nguyen Van Khanh, Le Dinh Cuong, Nguyen Dinh Giap, Nguyen Thi Oanh, Cao Duc Viet, Pham Duc Khue
{"title":"Assessment of radiation dose and biological effects on inhabitants of an area with rare earth element ore deposits in Lai Chau province, Vietnam.","authors":"Duong Van Thang, Dang Duc Nhan, Dao Dinh Thuan, Fernando P Carvalho, Pham Thi Huong, Do Thi Trang, Nguyen Dang Minh, Pham Tuan Nam, Nguyen Van Khanh, Le Dinh Cuong, Nguyen Dinh Giap, Nguyen Thi Oanh, Cao Duc Viet, Pham Duc Khue","doi":"10.1080/10256016.2025.2554790","DOIUrl":"10.1080/10256016.2025.2554790","url":null,"abstract":"<p><p>Rare earth element (REE) surface deposits containing primordial radionuclides such as uranium (<sup>238</sup>U), thorium (<sup>232</sup>Th), and potassium (<sup>40</sup>K) were identified in the Dong Pao region, northern Vietnam. As the area is inhabited, an in-depth investigation assessed environmental radioactivity, radiation doses, radiobiological parameters, and DNA alterations to evaluate health risks. Investigations were conducted in the REE deposit area and a control area 20 km away. Soil, water, and locally produced foods were analysed by gamma spectrometry to determine concentrations of ²³²Th, ²²⁶Ra, and ⁴⁰K, allowing estimation of annual effective doses from external gamma radiation. Ambient dose equivalent was measured with a survey meter and compared with dose estimates based on soil activity concentrations. Effective doses from ingestion were calculated from radionuclide concentrations in food and water. Inhalation doses were estimated from indoor ²²²Rn and ²²⁰Rn concentrations measured by solid-state nuclear track detectors in dwellings of both areas. Hematological parameters were analysed in blood samples using ADVIA2120 equipment. Peripheral blood counts of both groups were within normal ranges. <i>t</i>-tests revealed significant differences in neutrophil and lymphocyte counts in white blood cells of females from the REE area compared to controls. Neutrophil-to-platelet and platelet-to-lymphocyte ratios in adult females from the ore deposits area were significantly higher, indicating possible inflammation, an early sign of cancer. <i>TP53</i> gene sequencing showed significantly higher genotype frequencies of rs137852793 and c.701 + 25 variants in individuals from the REE area. Results clearly indicate that ionising radiation from REE ore deposits poses a health hazard to the local population, particularly females. Polymorphism of the <i>TP53</i> gene may serve as a biomarker for radiation exposure.</p>","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":" ","pages":"57-80"},"PeriodicalIF":1.4,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145244634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Satyanarayan Bramha, Sunil Kumar Sahoo, S Chandrasekaran, Prasanta Rath
{"title":"Geospatial distribution of natural radionuclides and radiological assessments in Asia's largest coastal lagoon sediment, Chilika, India.","authors":"Satyanarayan Bramha, Sunil Kumar Sahoo, S Chandrasekaran, Prasanta Rath","doi":"10.1080/10256016.2025.2552842","DOIUrl":"10.1080/10256016.2025.2552842","url":null,"abstract":"<p><p>The pioneer work on the measurement and distribution of natural radioactivity levels was carried out in the sediment samples of Asia's largest coastal lagoon, Chilika, India. The activity concentrations of radionuclides in the sediment samples measured by using a high-resolution HPGe semiconductor detector gamma-ray spectroscopy system, and the average activity concentration of <sup>226</sup>Ra, <sup>232</sup>Th, and <sup>40</sup>K were found to be 28.25 ± 7.85, 84.27 ± 30.93 and 610.57 ± 89.74 Bq kg<sup>-1</sup>. The contour map, drawn using the Kriging method, illustrates the geospatial distribution of each radionuclide in Chilika. The results show the distribution of radionuclides and are compared with similar results from different locations in the worldwide. The activity concentrations are also compared with the average values of the world and India. The radiological indices for the lagoonal system were calculated, and the mean values are 195.77 Bq kg<sup>-1</sup> for radium equivalent (Ra<sub>eq</sub>), 167.53 nGy h<sup>-1</sup> for absorbed gamma dose rate (D<sub>R</sub>), 0.21 mSv y<sup>-1</sup> for annual effective dose equivalent (AEDE), 631.27 µSv y<sup>-1</sup> for Annual gonadal dose equivalent (AGDE), 0.53 for external hazard index (H<sub>ex</sub>), 0.61 for internal hazard index (H<sub>in</sub>), 0.72 for gamma representative level index (Iγr), and 0.14 for alpha index (Iα). The mean value of the Ra<sub>eq</sub> obtained from the study area was less than the international value of 370 Bq kg<sup>-1</sup>. All the radiological assessment indices indicated that the observed values are below the threshold values.</p>","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":" ","pages":"41-56"},"PeriodicalIF":1.4,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145069583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Evaluation of the influence of soil types on the activity concentration of natural radionuclides in soil of Katsina State, Nigeria.","authors":"Abubakar Usman Lawal, Rabiu Nasiru, Nuraddeen Nasiru Garba","doi":"10.1080/10256016.2025.2551241","DOIUrl":"10.1080/10256016.2025.2551241","url":null,"abstract":"<p><p>This study evaluated the influence of soil type on the activity concentrations of natural radionuclides and the potential radiological risk in soils of southern Katsina, Nigeria. The measured activity concentrations of <sup>40</sup>K, <sup>226</sup>Ra, and <sup>232</sup>Th in soil samples ranged between 61.46 and 709.93 Bq/kg, 5.55 and 129.78 Bq/kg, 14.98 and 474.27 Bq/kg, respectively. Radiological hazard parameters, including the absorbed dose (D<sub>R</sub>), outdoor and indoor annual effective dose (OAED and IAED), and internal and external hazard indices (H<sub>in</sub> and H<sub>ex</sub>) were evaluated to determine the potential radiological risk. The mean values for D<sub>R</sub>, OAED, IAED, H<sub>in</sub>, and H<sub>ex</sub> were 82.84 nGy/h, 97.34 µSv/y, 389.44 µSv/y, 0.56, and 0.48, respectively. Despite the average absorbed dose across the five soil types surpassing global average values, the findings from the mean radiological risk parameters for various soil types (including OAED, IAED, H<sub>in</sub>, and H<sub>ex</sub>) suggest minimal radiation risk to biological tissue from exposure. This research indicates an irregularity in the radionuclide concentration within the soil of the examined area, yet implies that the soil may not present an immediate health threat to humans.</p>","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":" ","pages":"28-40"},"PeriodicalIF":1.4,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144954672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}