Archives of Environmental Contamination and Toxicology最新文献

{"title":"Monitoring and Health Risks Assessment of Primordial Radionuclides in Vegetables and Agricultural Soils in Some Hilly Regions of Southeastern Bangladesh.","authors":"Kazi Anisur Rahman, Rahat Khan, Md Bazlar Rashid, Saad Aldawood, Md Saiful Islam, Md Tazul Islam, Md Mohi Uddin, Abubakr M Idris, Md Harunor Rashid Khan, Md Ahosan Habib, Dhiman Kumer Roy","doi":"10.1007/s00244-025-01140-x","DOIUrl":"https://doi.org/10.1007/s00244-025-01140-x","url":null,"abstract":"<p><p>This study demonstrates the naturally occurring radioactive materials (NORMs: ²²⁶Ra, ²³²Th, and ⁴⁰K) in vegetables and their corresponding agricultural soil samples collected from southeastern Bangladesh (Chittagong). Elemental abundances measured by neutron activation analysis have been converted into associated radioactivities. Mean_n=30 specific radioactivities of ²²⁶Ra, ²³²Th, and ⁴⁰K in soil were 43.5, 61.5, and 645.2 Bq kg^-1, respectively, which were relatively higher compared to the corresponding recommended values. Activities of NORMs in vegetables (edible parts) ranged (Bq kg^-1) from 1.75 to 16(²²⁶Ra), 0.8-23.09(²³²Th), and 174-1743(⁴⁰K), which were higher than the corresponding recommended values, respectively. Higher radioactivity in the studied vegetables is mostly attributable to the fertilizer usages (specifically phosphate, potash, and organic fertilizers) and irrigation processes. Average_n=9 transfer factors of ²²⁶Ra, ²³²Th, and ⁴⁰K for under-surface vegetables (e.g., potato) were 0.078, 0.0933, and 0.799, whereas their average_n=21 TFs for over-surface vegetables (e.g., tomato) were 0.078, 0.102, and 1.5, respectively. Human health concerns are demonstrated by estimating standard radiological-risk indices. The cancer risks of the tomato sample surpass the allowable limit (3.5 × 10^-3 Sv^-1). Estimated ingestion dose was higher in tomato, okra, yardlong bean, and eggplant compared to the corresponding world average (290 µSv y^-1). Ingestion of NORMs through the uptake of vegetables can cause severe damage to the different tissues of digestive system by receiving alpha-radiations from the decay products of ²³⁸U and ²³²Th. Optimized usages of chemical fertilizers, crop rotation, and elevated use of organic compost fertilizers are recommended for controlling the NORMs abundances in the edible part of the vegetables.</p>","PeriodicalId":8377,"journal":{"name":"Archives of Environmental Contamination and Toxicology","volume":" ","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144666963","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":"Essential and Non-essential Elements in an Herbaceous Karst Wetland: Inputs from Urban Dust.","authors":"Wendy Yesenia Ortiz-Aguilar, Daniela Ortega-Camacho, Daniel Rosas, Maria Elizabeth Hernández-Alarcón, Gilberto Acosta-González, Elizabeth Hernandez-Álvarez, Valentina Abril Perez-Alfaro, Beatriz Escobar-Morales, Eduardo Cejudo","doi":"10.1007/s00244-025-01138-5","DOIUrl":"https://doi.org/10.1007/s00244-025-01138-5","url":null,"abstract":"<p><p>Wetlands play an important role in biogeochemical cycles, as their hydrological and edaphic properties drive chemical reactions that facilitate the storage or transfer of various elements. Some herbaceous wetlands are ecosystems dominated by grass-like communities, sedges and rushes, and the information available at international level reveals they are poorly studied ecosystems in terms of elemental analysis. This research seeks to contribute to the understanding of herbaceous wetlands producing an inventory of essential and non-essential elements, the latter expected to be increased from the direct interaction of the wetland with a road. Several elements, divided into four major groups (macro-elements, micro-elements, trace elements and non-essential elements), were quantitatively analyzed in five environmental matrices (interstitial water, sediments, vegetal aerial parts and roots, and snail shells) as well as urban dust, for the purpose of finding out whether urban dust from the road was a fixed source of non-essential elements for the wetland. Based on our findings, we report the presence of 24 elements (calcium, potassium, magnesium, phosphorus, iron, nickel, chromium, manganese, copper, zinc, silicon, barium, cobalt, molybdenum, selenium, vanadium, sodium, aluminum, cadmium, lead, antimony, arsenic, thallium and mercury), not all of them reported in all samples. We found several elements in highest concentrations in the portion of the wetland closest to the road, in water (Cu and Tl), sediments (Fe, Cr, Cu, V and Tl), aerial tissue of the plants (Mn, Co, V, Cd, Pb and As) and plants roots (Ni, Cr, Cu, Zn, Co, Mo, V, Al, Cd, Se, Pb and As). These elements overlap with those found in urban dust (Fe, Ni, Cr, Mn, Cu, Zn, Ba, Co, V, Cd, Pb, As, Tl), supporting the hypothesis that the road might be a source of both essential and non-essential elements to the wetland.</p>","PeriodicalId":8377,"journal":{"name":"Archives of Environmental Contamination and Toxicology","volume":" ","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144625220","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":"First Report of Mercury Biomagnification in Terrestrial Small Mammal Food Webs at High-Altitude Grasslands Sites: SE, Brazil.","authors":"Felipe de Moraes Lucena, Claudio Eduardo Azevedo-Silva, Gabriel Oliveira de Carvalho, Paulo Renato Dorneles, Diogo Loretto, Marcelo Weksler, Rodrigo Ornellas Meire","doi":"10.1007/s00244-025-01136-7","DOIUrl":"https://doi.org/10.1007/s00244-025-01136-7","url":null,"abstract":"<p><p>Since the recognition of mercury as a global pollutant, studies have aimed to provide information on its biogeochemical trends and risks to humans and the environment. Mostly focused on aquatic matrices, mercury biomagnification studies have indicated sensitive populations and trends to mercury in the environment. Nonetheless there is still an information gap on mercury behavior in terrestrial ecosystems, especially those located in tropical developing countries. Due to its relevance to biodiversity conservation, tropical high-altitude grasslands, located in the Atlantic Forest, represent a great opportunity to study mercury's behavior on mountainous sites. Thus, the main goals of this study were: to determine the occurrence of total mercury in high-altitude small mammals in Brazil, evaluating morphometric parameters, genus, sex and spatial variations over Hg bioaccumulation dynamics; to measure δ¹³C and δ¹⁵N stable isotopic values in biologic tissues as tool to understand the role of ecological interactions and their influence of Hg in food webs; and to assess the potential of Hg biomagnification in tropical high-altitude small mammal food webs. To achieve these aims, sampling campaigns were carried out at Itatiaia and Serra dos Órgãos National Parks (SE Brazil), collecting small mammal species in campos de altitude and cloud forest systems. For total mercury quantification, a CvAAS and, for (carbon and nitrogen) stable isotope measurements, an ICP-MS were used. We found mercury concentrations ranging from 12.5 to 2022 μg/kg, δ¹⁵N ranging from 1.61 to 7.02‰ and δ¹³C ranging from -27.30 to -10.45‰ and TMS values of: 0.65 for Serra dos Órgãos National Park and 0.39 for Itatiaia National Park. The present work provides an initial screen of mercury in Brazilian tropical uplands vertebrates and its mobility through the food web. This is the first report of mercury biomagnification in terrestrial mammals in Brazil.</p>","PeriodicalId":8377,"journal":{"name":"Archives of Environmental Contamination and Toxicology","volume":" ","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144558849","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":"Zooplankton as a Bioindicator of Marine Contamination for Filter-Feeding Basking Sharks, Fin Whales and Devil Rays at Caprera Canyon (Mediterranean Sea).","authors":"G Boldrocchi, B Villa, D Monticelli, D Spanu, G Binda, J Pachner, G Magni, E Fasola, F Stefani, R Bettinetti","doi":"10.1007/s00244-025-01137-6","DOIUrl":"https://doi.org/10.1007/s00244-025-01137-6","url":null,"abstract":"<p><p>The Canyon of Caprera (Mediterranean Sea) hosts high biodiversity, including threatened filter-feeding vertebrates such as the basking shark and fin whale. Due to their elusive nature, mobility and conservation status, direct contaminant assessment in these species is often challenging. To address this limitation, the present study focuses on zooplankton, an essential prey and bioindicator, to indirectly assess the levels of persistent organic pollutants and trace elements (TEs) in their feeding grounds. This approach provides a noninvasive method to estimate potential pollutant exposure in vulnerable megafauna and to evaluate the associated risks of pollutant transfer through the food web. Zooplankton samples accumulated mean PCB and DDT levels of 31.3 ± 17.5 ng g^-1 and 19.8 ± 15.3 ng g^-1 dry weight (dw), respectively. Regarding TEs, zooplankton exhibited high levels of essential TEs (e.g., Fe 778 ± 640 mg kg^-1 dw), while nonessential TEs were found in lower concentrations (e.g., Hg 0.1 ± 0.1 mg kg^-1 dw). Potential daily pollutant intake by the filter-feeding species was estimated using published zooplankton consumption rates, highlighting a significant pathway for contaminant transfer. Zooplankton contaminant levels exceeded the Environmental Quality Standard for Hg and the Maximum Allowable Limits established for foodstuff for Cr, Cd, Cu, Zn, As, Pb, suggesting potential risk for the aquatic environment, with implications for zooplankton feeders. These results demonstrate the utility of zooplankton as a noninvasive proxy for contaminant exposure in threatened marine megafauna and highlight the importance of monitoring pollution in key Mediterranean habitats.</p>","PeriodicalId":8377,"journal":{"name":"Archives of Environmental Contamination and Toxicology","volume":" ","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144558850","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":"Reconstructing Air Pollution Trends in Remote Forests of Central Europe Using Lichen Herbarium Specimens.","authors":"Luca Paoli, Zuzana Fačkovcová, Anna Guttová","doi":"10.1007/s00244-025-01134-9","DOIUrl":"10.1007/s00244-025-01134-9","url":null,"abstract":"<p><p>Lichen collections may contribute to a better understanding of past environmental conditions. By analysing herbarium specimens and recently collected material of the lichen Lobaria pulmonaria, this study reconstructs six decades (1960-2022) of air quality changes in remote forests of Central Europe (the Western Carpathians). Twenty specimens were selected for retrospective analysis of major and trace elements (Al, As, Cd, Cr, Cu, Fe, Hg, Mn, Ni, Pb, S, Sb, and Zn), focusing on both historical and current background concentrations. The results revealed peaks of potentially toxic elements (As, Fe, Hg, Mn, Ni, S, and Sb) up to 1989, with a progressive decline observed thereafter, particularly for Pb following the introduction of unleaded gasoline. Background element concentrations from 1960 to 1989 were at least four times higher than actual levels. The study highlights the value of herbarium collections for reconstructing air pollution history and tracking changes in background element concentrations in remote areas, particularly when alternative data sources are unavailable. It also addresses both the opportunities and limitations of this approach.</p>","PeriodicalId":8377,"journal":{"name":"Archives of Environmental Contamination and Toxicology","volume":" ","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144339868","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":"Trace Element and Organohalogen Compound Contamination in the Supraglacial Debris of Italian Glaciers.","authors":"Marco Parolini, Arianna Crosta, Beatrice De Felice, Viviana Minolfi, Francesca Pittino, Riccardo Scotti, Giulia Liguori, Jan Pachner, Andrea Franzetti, Roberto Ambrosini","doi":"10.1007/s00244-025-01135-8","DOIUrl":"https://doi.org/10.1007/s00244-025-01135-8","url":null,"abstract":"<p><p>Glaciers represent unique and threatened ecosystems, which have accumulated and continue receiving diverse, potentially toxic, and environmental contaminants released by past and ongoing anthropic activities. The accelerated ablation and retreat of glaciers due to climate warming can consequently alter the fate of contaminants trapped within their ice or on their surface, leading to increased contaminant release through meltwaters. Thus, the monitoring of glacier contaminants is crucial for assessing the potential risk for proglacial ecosystems. The present study aimed at investigating the presence and distribution of organic and inorganic contaminants in supraglacial debris from sixteen Italian glaciers. The levels of organohalogen compounds, specifically organochlorine (i.e., DDT homologues, HCH isomers, HCB, and PCBs) and polybrominated diphenyl ethers (i.e., PBDEs), and trace elements (i.e., Al, As, Cd, Co, Cr, Cu, Fe, Hg, Mn, Mo, Ni, Pb, Sr, Ti, Va, and Zn) were investigated in the debris collected from fifteen Alpine glaciers and the only existing Apenninic glacieret. The supraglacial debris of all glaciers contained measurable concentrations of trace elements, while organohalogen compounds were detected at measurable concentrations only in certain glaciers. Fe (mean ± standard deviation: 22,781.46 ± 10,849.73 mg/Kg dry weight), Al (10,417.71 ± 6,019.36 mg/Kg d.w.), and Mn (312.52 ± 167.78 d.w.) were the predominant trace elements, but measurable concentrations of toxic metals such as Cd (0.23 ± 0.31 d.w.), Hg (0.16 ± 0.12 d.w.), and Pb (84.32 ± 110.04 d.w.) were detected in the debris of all glaciers. The DDT homologues (mean ± standard deviation: 0.006 ± 0.009 mg/Kg d.w.), PCBs (0.003 ± 0.004 d.w.), and HCB (0.0009 ± 0.0005 d.w.) were measured in less than the 75% of investigated glaciers, while HCH isomers and PBDEs were never measured. Overall, a wide variability in the levels of all the investigated contaminants was observed among glaciers, suggesting that their origin could depend on atmospheric transport but also local sources of contamination.</p>","PeriodicalId":8377,"journal":{"name":"Archives of Environmental Contamination and Toxicology","volume":" ","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144301111","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":"Quick Monitoring of Tomato and Onion Samples During Routine Regulatory Analysis of Pesticide Residues.","authors":"José Manuel Veiga-Del-Baño, José Oliva, Miguel Ángel Cámara, Pedro Andreo-Martínez, Miguel Motas","doi":"10.1007/s00244-025-01133-w","DOIUrl":"https://doi.org/10.1007/s00244-025-01133-w","url":null,"abstract":"<p><p>In this study, a rapid visualization method was developed to simultaneously evaluate the on-going performance of routine analysis and ensure that the concentration of multiple pesticides in food samples with high water content complies with Maximum Residue Limits (MRLs). In order to accomplish this, we used a bubble chart known as Fast Risk Estimation and Analysis. In this chart, each pesticide is represented by a bubble. By looking at its color, position on the graph, and the size of the bubble, you can quickly determine whether it meets the requirements for relative standard deviation (RSD), recovery, Index of Quality for Residues, and matrix effect. Onion and pepper were chosen as commodity group with high water content. A single matrix-matched calibration using pepper was performed to analyze all these products. The risk visualization allows simultaneous checking of on-going validation and quality control parameters as recovery between 60 and 140% of the spike samples analyzed at the same time, such as the historical RSD (value and alarm if is upper at 20%). At the same time, the bubble chart monitoring other parameters such as the exceeding of the MRL in the analyzed samples, the complex definition of the residue in different pesticides or inconsistencies such as limits of quantification higher than the MRL could be quickly identified.</p>","PeriodicalId":8377,"journal":{"name":"Archives of Environmental Contamination and Toxicology","volume":" ","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144293262","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":"Temporal and Spatial Changes in Water Quality and Phytoplankton Populations in the Lower St. Johns River, Florida.","authors":"Gretchen K Bielmyer-Fraser, Julia M Courville, Kaitlyn Bowers, Samantha O'Keefe, Sarah Paulsen, Luke Stoeber, Megan Wise, Adam C Ryan, James A Nienow","doi":"10.1007/s00244-025-01132-x","DOIUrl":"https://doi.org/10.1007/s00244-025-01132-x","url":null,"abstract":"<p><p>The St. Johns River (SJR) is an ecologically and economically important estuarine river system undergoing extensive anthropogenic change. In this study, water quality parameters (dissolved oxygen, temperature, salinity, pH, hardness, alkalinity, ammonia-N, nitrate-N, and nitrite-N) and a suite of metals (cadmium, copper, lead, nickel, silver, and zinc) were measured in water samples collected from eight sites in the lower SJR from 2019 to 2022. This project was continued from previous work that documented these parameters in the river from 2017 to 2019. Aquatic communities such as phytoplankton can be indicative of river health; therefore, phytoplankton were also collected from each site, and the diatom component was identified. The total number of taxa in each sample ranged from 60 to 190, with 25 taxa accounting for the majority (64%). Similar to water quality, seasonal fluctuations in phytoplankton abundance and diversity were observed, with an increased relative abundance of Skeletonema costatum and Skeletonema subsalsum in times of lowered diversity. Furthermore, decreased phytoplankton diversity correlated with increased metal concentrations in the lower SJR. Multivariate analyses highlighted significant interactions among phytoplankton diversity and water quality variables. Significant parameters affecting phytoplankton biodiversity included salinity, pH, temperature, copper hazard quotient, and the nickel hazard quotient. This study provides new information about the impact of human disturbance on biotic communities and the complexity in predicting population changes.</p>","PeriodicalId":8377,"journal":{"name":"Archives of Environmental Contamination and Toxicology","volume":" ","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144233004","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":"Biological Diversity Associated with Pesticides Residues in Certain Egyptian Watercourses.","authors":"Asmaa Abdel-Motleb, Rania M Abd El-Hamid, Sara S M Sayed","doi":"10.1007/s00244-025-01129-6","DOIUrl":"10.1007/s00244-025-01129-6","url":null,"abstract":"<p><p>The aquatic environment has been contaminated by pyrethroids and triazole pesticide applications, which pose serious health risks to the aquatic ecosystem and human beings. Therefore, the current study aims to evaluate water quality parameters, fungal diversity, and distribution of snails and aquatic plants of certain Egyptian water courses contaminated with pyrethroids and triazole pesticides. Seasonal samples were taken throughout 2021 from different water courses at Giza Governorate and Tanta (Gharbeya Governorate). Qualitative and quantitative surveys showed significant differences in water physical parameters between the two investigated governorates. Deltamethrin, permethrin, Es-fenvalerate, and lambada-cyhalothrin showed the highest pyrethroids concentrations, while tebuconazole, tetraconazole, and difenoconazole were the highest triazole concentrations. Fungal diversity displayed 21 molecularly identified fungal species related to four fungal genera: Aspergillus, Fusarium, Penicillium, and Trichoderma. Penicillium sp. and Aspergillus niger were the most frequent species. Snail diversity recorded 10 and 9 species in Giza and Tanta, respectively. Physa acuta was the most abundant snail. Ten species of aquatic plants were observed in Giza, while six species were observed in Tanta. Specifically, Eichhornia crassipes and Lemna gibba were the dominant species in the two governorates, with the relative abundance (39 and 22%) in Giza and (27 and 23%) in Tanta, respectively. Water quality parameters and seasonal variations could control fungal diversity, snails, and aquatic plant distribution. Different relations between pesticides and biological communities may reflect the ability/inability of certain snails and fungi species to commensalism with pesticide concentrations. Continuous pesticide monitoring is essential for life below water and aligns with SDG14.</p>","PeriodicalId":8377,"journal":{"name":"Archives of Environmental Contamination and Toxicology","volume":" ","pages":"419-436"},"PeriodicalIF":3.7,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12126350/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143966043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessment of Metals Toxicity Using a Nitrifying Bacteria Bioassay Kit Based on Oxygen Consumption.","authors":"Suleman Shahzad, Aparna Sharma, Syed Ejaz Hussain Mehdi, Anup Gurung, Fida Hussain, Woochang Kang, Min Jang, Sang-Eun Oh","doi":"10.1007/s00244-025-01126-9","DOIUrl":"10.1007/s00244-025-01126-9","url":null,"abstract":"<p><p>The escalating concentrations of emerging contaminants in water systems and the possible environmental threats they emphasize the necessity for more sophisticated methods in the evaluation of water quality. Traditional bioassays raise ethical concerns, require intricate procedures, entail significant expenses, and only allow for endpoint measurements. The using of nitrifying bacteria in bioassays has resulted in increased sensitivity to a wide range of toxic substances, making them valuable for the identification of water pollution. This study introduces a novel nitrifying bacteria bioassay kit for detecting heavy metal contaminants in water. This bioassay is specifically designed for expedited analysis of oxygen consumption. This technique enables the identification of a range of toxic metals. Optimization studies indicated that 100 mg ammonia NH₄⁺-N/L, and 1 mL acclimated culture were the ideal conditions facilitating the necessary volume of gas consumption for sensitive data generation. Determined EC₅₀ values of the selected toxic metals were: chromium (Cr⁶⁺), 0.51 mg/L; silver (Ag⁺), 2.90 mg/L; copper (Cu²⁺), 2.90 mg/L; nickel (Ni²⁺), 3.60 mg/L; arsenic (As³⁺), 4.10 mg/L; cadmium (Cd²⁺), 5.56 mg/L; mercury (Hg²⁺), 8.06 mg/L; and lead (Pb²⁺), 19.3 mg/L. Metagenomics analysis found key species in the research included Nitrosomonas eutropha, Nitrosomonas oligotropha, Nitrosomonas europaea, Nitrobacter vulgaris, Nitrobacter winogradskyi, Nitrospira moscoviensis and Nitrospira lenta. In addition, this bioassay is ideal for field screening and real-time monitoring due to its simplicity and reliability. This bioassay provides a precise, economical, and effective substitute for more intricate and ethically problematic techniques, enhancing the effectiveness of water quality monitoring programs.</p>","PeriodicalId":8377,"journal":{"name":"Archives of Environmental Contamination and Toxicology","volume":" ","pages":"437-451"},"PeriodicalIF":3.7,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144118635","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}