Journal of trace elements and minerals最新文献

{"title":"Evaluating climate-induced drivers of trace metal mobilization in environmental systems","authors":"Anita Punia ,&nbsp;Saurabh Kumar Singh","doi":"10.1016/j.jtemin.2025.100271","DOIUrl":"10.1016/j.jtemin.2025.100271","url":null,"abstract":"<div><div><em>Background</em>: Two major threats to the environment are intensification of anthropogenic activities and ongoing climate change. The anthropogenic activities for economic growth are releasing abundant quantity of trace metals into the environment and it is likely to increase leading to disaster in future. Co-currently frequent natural disasters such as floods, droughts, forest fires and rise in sea level due to climate change are resulting in loss of life and economic burden. <em>Purpose and methodology</em>: The extreme weather events influence the environmental redox conditions promoting the dissolution/mobility of trace metals from the waste dumps associated with urban, industrial and mining activities. Climate change is predicated to intensify in future. The main objective of the present study is to understand the role of environmental consequences caused by climate change in governing the mobility of trace metals. It is important to predicate future risk and consequences caused by trace metals to avoid the natural hazards by implementing the mitigation strategies. A total of 191 research and review articles were selected on the basis of their relevance with the objectives of the study. <em>Observations</em>: The climatic factors such as temperature and precipitation influence the geochemical processes and hydrodynamics governing the trace metal mobility in environmental systems. The increase in temperature significantly influences the microbial activities leading to impact on the geochemical properties of soil and sediment. Additionally, the threat of rising sea level and the growing incidents of forest fires are among the key consequences of climate change. The sea water intrusion into the coastal areas facilitates mineral dissolution and leaching of trace metals into the aquifers. The burning of urban infrastructures and elevated temperature during forest fires significantly contribute to trace metal contamination in affected ecosystems. <em>Conclusions</em>: The environmental consequences caused by trace metals are expected to increase under the influence of future climate change. The new guidelines for the permissible limits for trace metals released from anthropogenic activities is recommended to avoid the natural hazard in future under the influence of climate change.</div></div>","PeriodicalId":73997,"journal":{"name":"Journal of trace elements and minerals","volume":"15 ","pages":"Article 100271"},"PeriodicalIF":0.0,"publicationDate":"2025-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145600535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bioaccumulation of minerals and trace elements in spinach (Spinacia oleracea L.) grown under different nutrient management and their implications for human health","authors":"Phalguni Das,&nbsp;Protyasha Biswas,&nbsp;Mousumi Akter,&nbsp;Md. Zakir Hossen,&nbsp;Md. Shohidul Alam","doi":"10.1016/j.jtemin.2025.100270","DOIUrl":"10.1016/j.jtemin.2025.100270","url":null,"abstract":"<div><h3>Background</h3><div>Nutrient management strategies significantly influence the bioaccumulation of minerals and trace elements in leafy vegetables, directly affecting crop nutritional quality and human health.</div></div><div><h3>Objectives</h3><div>This study aimed to evaluate the effects of different chemical fertilizers and organic manures on spinach (<em>Spinacia oleracea</em> L.) growth, yield, mineral content, and the potential health implications of consuming these plants.</div></div><div><h3>Methods</h3><div>A pot experiment was conducted using spinach cv. Kopi Palong in a completely randomized design with three replications. Treatments included: 100 % vermicompost (VC), 100 % cow dung (CD), 100 % chemical fertilizers (CF), and various combinations of CF with CD or VC (75 % CF + 25 % CD/VC, 50 % CF + 50 % CD/VC, 25 % CF + 75 % CD/VC), plus a control. Growth parameters, mineral nutrient uptake, and trace element concentrations in edible spinach leaves were measured.</div></div><div><h3>Results</h3><div>Significant variations were observed in spinach growth, nutrient uptake, and trace element accumulation among the nutrient management treatments. Mixed manure and chemical fertilizer treatments produced the tallest plants with the highest dry weight and moisture content, while 100 % chemical fertilizer resulted in the highest yield. Mineral uptake varied among treatments, indicating the potential to optimize nutrient profiles through specific fertilizer combinations. Trace metal accumulation followed the order Fe &gt; Mn &gt; Zn &gt; Cu &gt; Cd &gt; Pb. The highest concentrations in fresh weight (fw) basis recorded were Fe (3.667 mg kg^-1 fw in 100 % VC), Mn (0.598 mg kg^-1 fw in 100 % CD), Zn (0.252 mg kg^-1 fw in 100 % CD), Cu (0.043 mg kg^-1 fw in 100 % VC), and Cd (0.00094 mg kg^-1 fw in 50 % CF + 50 % VC). Pb was below detection in all treatments. Health risk assessments based on hazard indices indicated no noncancerous risk from spinach consumption.</div></div><div><h3>Conclusion</h3><div>Combining organic manures with chemical fertilizers can reduce trace element contamination while enhancing spinach growth and nutrient content, offering safer and more nutritious produce for human consumption.</div></div>","PeriodicalId":73997,"journal":{"name":"Journal of trace elements and minerals","volume":"14 ","pages":"Article 100270"},"PeriodicalIF":0.0,"publicationDate":"2025-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145528354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Integrated mineralogical and microstructural analysis of gas field samples in Bangladesh: Optimizing extraction strategies for Salda and Shahbazpur reservoirs","authors":"Mahbuba Begum ,&nbsp;Fatema Tuz Zohora Toma ,&nbsp;Md. Bazlar Rashid ,&nbsp;Md. Ahosan Habib ,&nbsp;Saeed Mahmud Ullah ,&nbsp;Rahat Khan ,&nbsp;Syed Mohammod Hossain ,&nbsp;S. M. Mostafa Al-Mamun","doi":"10.1016/j.jtemin.2025.100268","DOIUrl":"10.1016/j.jtemin.2025.100268","url":null,"abstract":"<div><h3>Background</h3><div>The Salda and Shahbazpur gas fields are two significant natural gas reservoirs in the Bengal Basin, Bangladesh. This study presents a novel integration of mineralogical and microstructural analyses aimed at optimizing gas extraction strategies for the both Salda and Shahbazpur gas fields.</div></div><div><h3>Materials and methods</h3><div>Core samples (consolidated sedimentary rocks) from both fields were analyzed using X-ray Diffraction, Scanning Electron Microscopy equipped with Energy Dispersive X-ray Spectroscopy advanced techniques. These analyses focused on identifying mineral composition, porosity, particle size, and textural features influencing permeability.</div></div><div><h3>Results</h3><div>Salda samples were found to be rich in quartz with minimal diagenetic alteration, exhibiting porosity ranging from 10 to 32% and an average particle size of 7.12 µm, supporting conventional gas extraction methods. Shahbazpur samples, however, contained evaporitic minerals (e.g., halite) and diagenetic features, including iron oxides and silicates, with reduced porosity (8 to 30%) and a finer particle size of 6.73 µm. The presence of syngenetic zircon and alteration minerals suggested possible complex diagenetic processes.</div></div><div><h3>Conclusion</h3><div>Salda gas field conditions favor conventional extraction techniques, whereas Shahbazpur’s mineralogical complexity and compacted matrix require enhanced methods such as hydraulic or waterless fracturing. This study demonstrates a novel approach to correlating mineralogical properties with gas extraction challenges, contributing to sustainable reservoir management in geologically diverse environments.</div></div>","PeriodicalId":73997,"journal":{"name":"Journal of trace elements and minerals","volume":"14 ","pages":"Article 100268"},"PeriodicalIF":0.0,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145528356","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Heavy metal contamination in tobacco fields: Source identification, bioaccumulation and translocation dynamics, and health risk assessment","authors":"Anupam Roy,&nbsp;M.G. Mostafa,&nbsp;Sabrina Naz","doi":"10.1016/j.jtemin.2025.100269","DOIUrl":"10.1016/j.jtemin.2025.100269","url":null,"abstract":"&lt;div&gt;&lt;div&gt;This study comprehensively investigated the sources, accumulation dynamics, and associated risks of heavy metals (HMs), emphasizing the Enrichment Factor (&lt;em&gt;EF&lt;/em&gt;), Bioaccumulation Factor (&lt;em&gt;BAF&lt;/em&gt;), Translocation Factor (&lt;em&gt;TF&lt;/em&gt;), Crop Pollution Index (&lt;em&gt;CPI&lt;/em&gt;), and human health impacts of tobacco consumption. A total of six soil samples, eighteen plant samples (roots, stems, and leaves), and thirty-six fertilizer samples (six types) were analyzed for nine HMs. Tobacco-growing soils exhibited elevated concentrations of Ni, Cd, and As. The &lt;em&gt;EF&lt;/em&gt; analysis revealed geogenic origins for Mn, Cu, and Zn; moderate enrichment of Pb and Cr; and substantial anthropogenic contributions of Ni, As, and Cd in tobacco-cultivated soils. Elevated Cd and Ni levels in Triple Super Phosphate (TSP) and Diammonium Phosphate (DAP) fertilizers identify them as major HM sources in tobacco-growing soils. The &lt;em&gt;BAF&lt;/em&gt; results indicated hyperaccumulation (&lt;em&gt;BAF&lt;/em&gt; &gt; 1) of Cd and Zn, while other metals exhibited low to moderate bioaccumulation. Cd, Ni, and Zn showed strong phytoextraction potential (&lt;em&gt;TF&lt;sub&gt;Leaf&lt;/sub&gt;&lt;/em&gt; &gt; 1), whereas Fe, Pb, and Cr displayed phytostabilization behavior (&lt;em&gt;TF&lt;sub&gt;Leaf&lt;/sub&gt;&lt;/em&gt; &lt; 0.5). Multivariate analyses, including correlation, Principal Component Analysis (PCA), and Cluster Analysis (CA), revealed two distinct groups: Mn, Ni, Fe, and Zn formed a nutrient-associated cluster, whereas Cd, Cu, Pb, As, and Cr grouped as a toxic metal cluster in terms of translocation behavior. Human health risk assessment revealed low total non-carcinogenic risk (&lt;em&gt;NCR&lt;/em&gt;) but elevated carcinogenic risk (&lt;em&gt;CR&lt;/em&gt;) values (10⁻⁴–10⁻³), particularly among children, seniors, and females, with Cd and Ni as the major contributors. Chewing tobacco with betel leaves (ingestion) accounted for 98.87 % of total &lt;em&gt;CR&lt;/em&gt;, whereas smoking (inhalation) contributed only 1.03 %. The presence of Cd, Pb, As, and Cr also poses significant phytotoxic threats to tobacco plant health. The findings underscore the urgent need for safer and balanced fertilizer practices and strengthened regulatory frameworks to mitigate HM contamination in tobacco-growing ecosystems.&lt;/div&gt;&lt;div&gt;&lt;strong&gt;Structured Abstract:Introduction:&lt;/strong&gt; Agricultural soil contamination by heavy metals (HMs) threatens both plant and human health, with tobacco especially at risk due to its strong bioaccumulation tendency. This study investigates HM sources in tobacco-cultivated soils, uptake dynamics, and associated health implications, with an emphasis on Enrichment Factor (&lt;em&gt;EF&lt;/em&gt;), Bioaccumulation Factor (&lt;em&gt;BAF&lt;/em&gt;), and Translocation Factor (&lt;em&gt;TF&lt;/em&gt;). &lt;strong&gt;Methodology:&lt;/strong&gt; Field investigations at six sites involved collecting six soil samples, eighteen plant samples (roots, stems, and leaves), and thirty-six fertilizer samples (six types). Nine HMs were analyzed using standard procedures. &lt;strong&gt;Results and Discussion:&lt;/s","PeriodicalId":73997,"journal":{"name":"Journal of trace elements and minerals","volume":"14 ","pages":"Article 100269"},"PeriodicalIF":0.0,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145528355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The geopolitical implications of rare earth minerals extraction in Afghanistan","authors":"Ashraf Dawar ,&nbsp;Muhammad Waqar Khan ,&nbsp;Lindsey Tchatchouang","doi":"10.1016/j.jtemin.2025.100267","DOIUrl":"10.1016/j.jtemin.2025.100267","url":null,"abstract":"<div><div>Background: Afghanistan’s Rare Earth Elements (REEs) reserves have become a central point of geopolitical competition following the Taliban’s return to power in 2021. This study investigates the complex interplay between China’s growing dominance in Afghanistan’s mining sector, the failure of Western containment approaches, and the Taliban’s unconventional governance of these critical resources. Drawing on satellite imagery analysis, blockchain tracking of cryptocurrency transactions, and interviews with industry experts, the research uncovers how China has secured preferential access to REEs deposits through a “security-for-minerals” bargain with the Taliban. The study documents the Taliban’s paradoxical approach to resource governance, combining bureaucratic pragmatism with ideological constraints, resulting in revenue capture (15 % local allocations) and notable leakage (42 % lost to corruption). Findings highlight the emergence of REEs smuggling as a key funding source for regional militant groups, with an estimated $19 million annually flowing to ISIS-K Khorasan. The research contributes to theoretical debates on the “resource curse” in Islamic governance contexts and the evolving effectiveness of sanctions in an era of digital financialization. Practical implications include recommendations for tiered sanctions regimes and regional monitoring mechanisms to curb conflict financing while maintaining pressure for responsible mining practices. This study offers critical insights into how fragile states’ mineral wealth reshapes 21st-century geopolitical competition.</div></div>","PeriodicalId":73997,"journal":{"name":"Journal of trace elements and minerals","volume":"14 ","pages":"Article 100267"},"PeriodicalIF":0.0,"publicationDate":"2025-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145416942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Carcinogenic and non-carcinogenic health risk assessment of heavy metals in water from selected oil pollution-prone communities in the Niger delta region","authors":"Benjamin Onozeyi Dimowo ,&nbsp;Adewole Michael Gbadebo ,&nbsp;Adewale Matthew Taiwo ,&nbsp;Olatunbosun Samuel Sojinu ,&nbsp;Moses Onaivi Dimowo","doi":"10.1016/j.jtemin.2025.100266","DOIUrl":"10.1016/j.jtemin.2025.100266","url":null,"abstract":"<div><div>Water is vital to human health, yet its quality is threatened by industrial activity and crude oil pollution. This study evaluated water quality and associated carcinogenic and non-carcinogenic health risks from ten heavy metals for infants, children, teenagers, and adults through oral and dermal exposure routes in selected communities of Edo and Cross River States. A total of 113 samples from boreholes, wells, and a surface water source were analysed for As, Pb, Cd, Cr, Ni, Zn, Fe, Cu, Mn, and Ag using ICP-MS. Health risks were quantified following USEPA protocols. Findings revealed elevated concentrations of Pb (0.03±0.000–0.066±0.001 mg/L), Cd (0.001±0.001–0.011±0.002 mg/L) and Fe (0.301±0.078–0.950±0.000 mg/L) exceeding regulatory thresholds (WHO, SON, and NESREA). Water Quality Index (WQI) classed 13 water sources as “good”, 55 “poor,” 31 “very poor,” and 14 unsuitable for use. Degree of Contamination (C_deg) values (4.23–16.27) and Contamination Factor (CF) values confirmed widespread contamination, particularly from Pb (1.60–9.10), Cd (0.67–4.33), Ni (0.10–2.80), and Fe (0.13–4.01). Pollution Load Index (PLI) values (0.10–0.46) and Nemerow Pollution Index (P_n) values (1.24–2.28) on the other hand suggested no acute pollution. Non-carcinogenic health risks were primarily linked to cadmium (HQ&gt;1), especially for infants, with all 113 samples posing potential risks (HI&gt;1). Total mean cancer risk exceeded the USEPA threshold (1 × 10⁻⁴) in all samples, with infants (1.80 × 10⁻²) being most vulnerable. The contribution of metals to the cancer risk was in the order, Ni&gt;Fe&gt;As&gt;Cr&gt;Cd&gt;Pb. These findings underscore the urgent need for continuous monitoring, effective water treatment, and stricter environmental regulation.</div></div>","PeriodicalId":73997,"journal":{"name":"Journal of trace elements and minerals","volume":"14 ","pages":"Article 100266"},"PeriodicalIF":0.0,"publicationDate":"2025-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145362291","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spatio-temporal evaluation of urbanization impacts on groundwater quality and the risk of human exposure to nitrate-contaminated groundwater","authors":"Joseph I. Nwachukwu ,&nbsp;Leon J. Clarke ,&nbsp;Francis Q. Brearley ,&nbsp;Elias Symeonakis ,&nbsp;Chika V. Nwachukwu","doi":"10.1016/j.jtemin.2025.100265","DOIUrl":"10.1016/j.jtemin.2025.100265","url":null,"abstract":"<div><h3>Background</h3><div>The study investigates how spatial factors linked to urbanisation in Owerri, Nigeria, contribute to groundwater contamination. It also evaluates the associated public health risks, particularly from poorly designed private boreholes in environmentally sensitive areas.</div></div><div><h3>Methodology</h3><div>Groundwater was sampled in two seasons across a ∼100 km² area and analysed for major ions and DOC using ion chromatography and a Shimadzu TOC analyser, respectively. Water Quality Index (WQI) and Synthetic Pollution Index (SPI) were used to evaluate the drinking suitability of groundwater. A non-cancer risk model assessed age-specific health risks. Parameter relationships and variations were analysed using correlation and ANOVA, with sampling locations mapped using a handheld GPS.</div></div><div><h3>Results</h3><div>Findings showed nitrate (NO₃^-) as a critical contaminant having exceeded the World Health Organization’s (WHO) permissible limit (PL) of 50 µg ml^-1 in c.12 % and 26 % of boreholes in the respective seasons. DOC exceeded the WHO limit in about 83 % of sites during the rainy season but dropped to 2 % in the dry season. Nitrate pollution aligned with urban density patterns, while water quality declined from rainy to dry season, with 70 % to 25 % (WQI) and 13 % to 43 % (SPI) classified as good. Hazard quotients above 1 were recorded in 17 % to 32 % of the population during the rainy season and doubled in the dry season, indicating heightened health risks.</div></div><div><h3>Conclusion</h3><div>The study revealed significant seasonal variation in NO₃⁻ and high DOC levels, posing health risks to young children, and recommends Integrated Vulnerable Zone Management (IVZM) for safe water and sustainable urban planning in line with SDG 3.</div></div>","PeriodicalId":73997,"journal":{"name":"Journal of trace elements and minerals","volume":"14 ","pages":"Article 100265"},"PeriodicalIF":0.0,"publicationDate":"2025-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145332921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Understanding trace elements dynamics and environmental health: insights from Fish Mortality in Rajshahi, Bangladesh","authors":"A․H․M․Selim Reza ,&nbsp;Md․Shazzadur Rahman ,&nbsp;Fazal Md․Mohi Shine ,&nbsp;Md․Abu Bakar Siddique ,&nbsp;Md․Abdur Rahman ,&nbsp;Sudip Saha ,&nbsp;Abu Bakar Siddique ,&nbsp;Fawzia Adib Flowra","doi":"10.1016/j.jtemin.2025.100264","DOIUrl":"10.1016/j.jtemin.2025.100264","url":null,"abstract":"<div><h3>Introduction</h3><div>This study investigates the combined impact of trace metal contamination and environmental factors on fish mortality in aquaculture ponds in the Rajshahi region of Bangladesh. The primary objective is to assess how physicochemical parameters and trace metal concentrations interact with climatic conditions to influence fish health and survival.</div></div><div><h3>Materials and Methods</h3><div>Water, sediment, and fish tissue samples were collected and analyzed for arsenic (As), mercury (Hg), chromium (Cr), cadmium (Cd), and lead (Pb) using Atomic Absorption Spectrometry (AAS-240FS). Key physicochemical parameters such as pH, electrical conductivity (EC), total dissolved solids (TDS), and dissolved oxygen (DO) were measured. Climatic variables, including relative humidity and temperature, were recorded to evaluate their relationship with DO levels and fish mortality events.</div></div><div><h3>Results and Discussion</h3><div>Mean values of pH, EC, and TDS were 6.77, 433.4 µS cm⁻¹, and 209 mg <em>L</em>⁻¹, respectively. Trace metal concentrations in water followed the order Pb &gt; As &gt; Cr &gt; Hg &gt; Cd; in sediment, Cr &gt; Pb &gt; As &gt; Hg &gt; Cd; and in fish tissue, Cr &gt; Pb &gt; As &gt; Hg &gt; Cd. A significant inverse correlation was found between high relative humidity (90–95 %) and DO levels, which decreased from 4.00 mg <em>L</em>⁻¹ to 1.08 mg <em>L</em>⁻¹ well below the critical threshold of 5–6 mg <em>L</em>⁻¹ required for fish survival. Additionally, TDS exhibited a negative correlation with DO and a positive correlation with sedimentary arsenic, indicating that siltation from heavy rainfall contributes to oxygen depletion. The highest fish mortality, recorded on September 1, 2020, coincided with overcast conditions, elevated temperatures, and reduced photosynthetic activity, all of which exacerbated hypoxic stress.</div></div><div><h3>Conclusion</h3><div>The findings highlight the complex interplay between environmental stressors and trace metal pollution in aquaculture ponds. Regular water quality monitoring, pollution control, and adaptive management strategies are essential to reduce fish mortality risks and ensure the long-term sustainability of aquaculture in the region.</div></div>","PeriodicalId":73997,"journal":{"name":"Journal of trace elements and minerals","volume":"14 ","pages":"Article 100264"},"PeriodicalIF":0.0,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145220607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Elemental bioaccumulation as trophic discriminator in Southeast Alaska gray wolves: Marine-terrestrial diet shifts","authors":"Miranda Brohman ,&nbsp;Gretchen H. Roffler ,&nbsp;Dimitrios G. Giarikos ,&nbsp;David W. Kerstetter ,&nbsp;Amy C. Hirons","doi":"10.1016/j.jtemin.2025.100263","DOIUrl":"10.1016/j.jtemin.2025.100263","url":null,"abstract":"<div><div>Gray wolves (<em>Canis lupus</em>) in Southeast Alaska exhibit diverse foraging strategies shaped by regional ecological factors. Stable isotope (δ¹³C and δ¹⁵N) and trace element (TE) analyses were used to evaluate dietary patterns and contaminant exposure in four wolf populations from northern Lynn Canal (Douglas Island, Juneau, Gustavus, and Pleasant Island) from wolf hair samples collected from 2013–2021, along with sea otter (<em>Enhydra lutris</em>) hair in wolf scat collected in 2018–2019. Stable isotope ratios revealed that Juneau wolves predominantly consume terrestrial prey such as Sitka black-tailed deer (<em>Odocoileus hemionus sitkensis</em>) and mountain goats (<em>Oreamnos americanus</em>), and wolves on Douglas Island mainly consume Sitka black-tailed deer. In contrast, wolves from Gustavus and Pleasant Island exhibited enriched isotopic signatures, indicating a significant incorporation of marine-derived prey, particularly sea otters. Analysis of TEs revealed higher concentrations in wolves consuming marine-based diets, highlighting potential bioaccumulation risks compared to terrestrial-based diets. Gustavus wolves had the highest geometric mean concentrations for Cr (1.63 µg/g), Hg (4.24 µg/g), and Mo (0.180 µg/g) while Pleasant Island wolves had the highest for Al (153 µg/g), Cd (0.160 µg/g), Co (0.208 µg/g), Fe (343 µg/g), Mn (52.1 µg/g), and V (0.592 µg/g). The Se:Hg ratio also indicated a higher likelihood of mercury toxicity in all wolf populations, underscoring environmental health concerns. Assessing the dietary preferences and prey availability of apex predators, alongside the potential risks posed by elevated TE concentrations, is essential for informing targeted conservation strategies aimed at safeguarding these species across both coastal and inland Southeast Alaska.</div></div>","PeriodicalId":73997,"journal":{"name":"Journal of trace elements and minerals","volume":"14 ","pages":"Article 100263"},"PeriodicalIF":0.0,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145266274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparative evaluation of peeled and unpeeled white and red cocoa yam varieties by mineral and vitamin profiles","authors":"Elijah O. Odesanmi ,&nbsp;Deborah O. Jesusanmi ,&nbsp;Olorunfemi R. Molehin ,&nbsp;Modupe A Ogundare ,&nbsp;Omotade I. Oloyede ,&nbsp;Yemisi Alli Smith ,&nbsp;Bukola T. Aluko ,&nbsp;Olajumoke O. Ojo ,&nbsp;Olorunfemi Ojo ,&nbsp;Seun Akomolafe","doi":"10.1016/j.jtemin.2025.100262","DOIUrl":"10.1016/j.jtemin.2025.100262","url":null,"abstract":"<div><h3>Background</h3><div>Cocoa yam (<em>Xanthosoma sagittifolium</em>) is a starchy root vegetable that is widely consumed in tropical regions. As an underutilized crop, its potential as a functional food remains largely unexplored.</div></div><div><h3>Objectives</h3><div>The aim of this current study was to compare peeled and unpeeled white and red cocoa yam varieties, specifically by their emergent mineral and vitamin profiles</div></div><div><h3>Methods</h3><div>The research employed an Atomic Absorption Spectrophotometer (AAS) to detect minerals like iron (Fe), magnesium (Mg), lead (Pb), manganese (Mn), sodium (Na), and potassium (K), likewise HPLC-UV to detect vitamins like vitamin E,C,A and vitamin K present in peeled and unpeeled white and red cocoa yam.</div></div><div><h3>Results</h3><div>The mineral analysis revealed that the unpeeled red cocoa yam (URCY) and unpeeled white cocoa yam (UWCY) consistently displayed significantly higher levels of macrominerals, such as calcium (123.238±0.02 mg 100 g in UWCY and 115.793±0.56 mg 100 g in URCY), magnesium, sodium, and potassium, compared to the peeled counterparts (PWCY and PRCY). The unpeeled varieties also exhibited greater concentrations of trace minerals, including iron (17.987±0.02 mg 100<em>g</em>⁻¹ in URCY and 63.320±0.03 mg 100 g in UWCY), copper, zinc, and manganese. Interestingly, all varieties had negligible levels of lead, indicating minimal contamination. The vitamin composition analysis further highlighted the importance of the peel. The unpeeled URCY variety demonstrated the highest levels of fat-soluble vitamins, such as vitamin A (3.947±0.04 μg 100<em>g</em>⁻¹ URCY and 4.315±0.01 μg 100 g in UWCY), vitamin E, and vitamin K. For water-soluble vitamins, URCY also had the greatest amounts of vitamin C (8.652±0.02 mg 100<em>g</em>⁻¹) and vitamin B6.</div></div><div><h3>Conclusion</h3><div>These findings suggest that the peel of the cocoa yam is a rich source of various essential minerals and vitamins, which are known to confer numerous health benefits. Consuming cocoa yam with the peel intact can provide greater nutritional and functional food benefits to consumers compared to peeled varieties.</div></div>","PeriodicalId":73997,"journal":{"name":"Journal of trace elements and minerals","volume":"14 ","pages":"Article 100262"},"PeriodicalIF":0.0,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145106152","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}