{"title":"Multiple Isotopes Reveal the Nitrate Sources in Aojiang River Basin, Eastern China.","authors":"Jiangnan Li, Qianhang Sun, Kun Lei","doi":"10.1007/s00128-025-04026-9","DOIUrl":"https://doi.org/10.1007/s00128-025-04026-9","url":null,"abstract":"<p><p>Excessive nitrate (NO<sub>3</sub><sup>-</sup>) in water poses a global environmental challenge. Identifying NO<sub>3</sub><sup>-</sup> sources and their contributions is crucial for improving water quality. We collected surface water samples in the Aojiang River basin, Eastern China, during dry and wet seasons. Hydrochemical indicators, δ<sup>15</sup>N-NO<sub>3</sub><sup>-</sup> and δ<sup>18</sup>O-NO<sub>3</sub><sup>-</sup> were used to identify NO<sub>3</sub><sup>-</sup> sources and assess their contributions. The findings revealed nitrification as the primary nitrogen transformation process. Isotopic analysis identified manure and sewage (M&S), soil nitrogen (SN), and nitrogen fertilizer (NF) as major NO<sub>3</sub><sup>-</sup> contributors. The MixSIAR model analysis showed proportional contributions of atmospheric deposition (AD), NF, M&S, and SN to NO<sub>3</sub><sup>-</sup> during the dry season as 2.84%, 19.63%, 44.67%, and 34.87%, respectively. In the wet season, the contributions were 3.61%, 22.32%, 32.37%, and 41.70%, respectively. This study enhances understanding of nitrogen sources and transformations in the Aojiang River basin, aiding better nitrogen contamination management.</p>","PeriodicalId":501,"journal":{"name":"Bulletin of Environmental Contamination and Toxicology","volume":"114 4","pages":"53"},"PeriodicalIF":2.7,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143690707","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":"Treatment of Oilfield Soils Contaminated With <sup>226</sup>Ra, <sup>210</sup>Pb and <sup>210</sup>Po Using Ultrasound and Acid Washing.","authors":"M S Al-Masri, Y Amin, H Khalily","doi":"10.1007/s00128-025-04018-9","DOIUrl":"https://doi.org/10.1007/s00128-025-04018-9","url":null,"abstract":"<p><p>A method to treat soils contaminated with <sup>226</sup>Ra, <sup>210</sup>Pb and <sup>210</sup>Po using ultrasonic waves has been developed. Diluted acidic solutions were used as washing media for the radionuclides. The optimum treatment conditions such as the ratio of soil to solution, contact time, temperature, concentration of washing solution, and soil particle size have been determined. The results showed that the efficiency of soil washing using ultrasonic waves could reach 95% for both <sup>226</sup>Ra and <sup>210</sup>Pb. The acidic solutions HCl (5%) and HNO<sub>3</sub> (5%) were found to give the highest removal efficiency for <sup>226</sup>Ra and <sup>210</sup>Pb. On the other hand, the efficiency of ultrasonic treatment was found to be inversely related to both electrical conductivity of soil solution, the concentration of dissolved ions (Cl<sup>-</sup>, HCO<sup>3-</sup>, Ca<sup>2+</sup>, and Mg<sup>2+</sup>), and the concentration of organic matter in the soil. However, the method may be useful for treatment of the oilfields soil contaminated with <sup>226</sup>Ra, <sup>210</sup>Pb and <sup>210</sup>Po.</p>","PeriodicalId":501,"journal":{"name":"Bulletin of Environmental Contamination and Toxicology","volume":"114 4","pages":"50"},"PeriodicalIF":2.7,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143690715","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":"Spatial Distribution and Quantitative Source Identification of Heavy Metals in Soil of a Typical Industrial Park, East of China.","authors":"Shiyu Wang, Junnan Zhang, Jingyuan Sun, Fada Zhou, Pingping Wang, Zhirui Qin, Yue Zhao, Shuo Wang, Ziyu Han, Wentao Jiao","doi":"10.1007/s00128-025-04013-0","DOIUrl":"https://doi.org/10.1007/s00128-025-04013-0","url":null,"abstract":"<p><p>In order to illustrate the contamination, spatial distribution and sources identification of heavy metals in Bohai New Urban District (BHNUD), a total of 333 surface soil (< 0.5 m) and 159 core soil samples (0.5-2 m) were collected. Results showed that, the mean concentrations of Cu, Ni, Pb, Cd, As and Hg in soil were 8.00-45.00 mg/kg, 10-58.00 mg/kg, 7.40-92.10 mg/kg, 0.02-0.35 mg/kg, 3.02-18.00 mg/kg and 0.002-0.21 mg/kg, respectively. The concentrations of the six heavy metals were higher than their background values to different extent, indicating the accumulation of heavy metals in this area. Cu, Cd and Ni were mainly distributed in the agricultural region; As and Hg were mainly distributed in the northeast part of the industrial area; Pb had a randomized distribution across the study area. The source identification was quantitatively carried out with the positive matrix factorization (PMF) receptor model. It showed that Pb in this area was most influenced by traffic, followed by agricultural and industrial activities. Cu and Ni in this area were mainly associated with agricultural and industrial activities; Hg was predominantly due to atmospheric deposition; As was mainly affected by industrial activities; and Cd was mainly a consequence of agricultural activities. The results will underpin the development of appropriate methods for the soil pollution control and remediation in the future.</p>","PeriodicalId":501,"journal":{"name":"Bulletin of Environmental Contamination and Toxicology","volume":"114 4","pages":"48"},"PeriodicalIF":2.7,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143646774","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}
Chun-Li Zheng, Gang Liu, Jin-Mao Shi, Hong-Kai Liao
{"title":"Urbanization Gradients Affect Occurrence and Distribution of Antibiotic Contamination in the Baixi Reservoir and Yongjiang Estuary, China.","authors":"Chun-Li Zheng, Gang Liu, Jin-Mao Shi, Hong-Kai Liao","doi":"10.1007/s00128-025-04029-6","DOIUrl":"https://doi.org/10.1007/s00128-025-04029-6","url":null,"abstract":"<p><p>Urbanization has promoted the development of human society, but is often accompanied by environmental pollution. To investigate the extent to which differing levels of urbanization might affect antibiotic heterogeneity and distribution in the aquatic environment, we contrast the Yongjiang Estuary, an area of intense urbanization, with the Baixi Reservoir- whose hinterland is much less urbanized. We found that antibiotic residues in Baixi Reservoir and Yongjiang Estuary were significantly different due to urbanization gradient. 14 antibiotics were detected in Yongjiang Estuary with an average concentration of 0.74 ng/L, and the dominant classes being was macrolides. 13 antibiotics were detected in Baixi Reservoir with an average concentration of 0.12 ng/L, and the dominant class being tetracyclines. Total nitrogen, total suspended particulate matter and dissolved organic carbon (DOC) were found to have strong effect on the concentration of quinolones in Baixi Reservoir. However, salinity, ammonia nitrogen, DOC and chloride ion concentration were found to have strong effect on the concentration of quinolones in Yongjiang Estuary. DOC was the common factor affecting the concentration of antibiotics. This study provides data which reveal the distribution characteristics of antibiotics under different urbanization level and elucidates the risks posed by antibiotics resistance associated with rapid urbanization occurring in China and throughout the developing world.</p>","PeriodicalId":501,"journal":{"name":"Bulletin of Environmental Contamination and Toxicology","volume":"114 4","pages":"49"},"PeriodicalIF":2.7,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143646775","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}
Elodie Pepey, Gwenn Pulliat, Truong Dinh Hoai, Michaël Bruckert, Geneviève Conéjéro, David Boggio, Coline Perrin, Mathilde Valette, Simon Pouil
{"title":"Genotoxic Potential of Anthropized Water Bodies in the Hanoi Region of Vietnam Assessed with the Comet Assay on Erythrocytes of Nile Tilapia (Oreochromis niloticus).","authors":"Elodie Pepey, Gwenn Pulliat, Truong Dinh Hoai, Michaël Bruckert, Geneviève Conéjéro, David Boggio, Coline Perrin, Mathilde Valette, Simon Pouil","doi":"10.1007/s00128-025-04023-y","DOIUrl":"10.1007/s00128-025-04023-y","url":null,"abstract":"<p><p>The Black and Nhue-Day River sub-basins near Hanoi, Vietnam, are crucial aquatic ecosystems that are suffering from severe pollution stemming from industrial, domestic, and agricultural sources, which pose risks to environmental and public health. We assessed water genotoxicity at four locations along a gradient of urbanization in Hanoi and its peripheral regions: a fish farm at Hoa Binh reservoir (HB), a peri-urban fish farm in Phu Xuyen district (PX), and urban lakes Truc Bach (TB) and Thien Quang (TQ). Using the comet assay on Nile tilapia erythrocytes, DNA damage (% tail DNA), reflecting fragmented DNA that migrates out of the nucleus during electrophoresis, demonstrated significant differences between sites (p < 0.001). Urban lakes exhibited lower damage (TB: 16 ± 10%, TQ: 33 ± 17%), while the highest damage levels were observed in the hydropower reservoir (HB: 70 ± 15%). Trace elements (i.e., As, Cd, Cr, Ni, and Pb) analyzed in water did not exhibit a significant correlation with DNA damage, suggesting the presence of other unexamined contaminants, such as pesticides, that may explain these findings. These genotoxicity results emphasize the need for further research to identify the specific origins of the observed DNA damage, such as potential contributions from agricultural runoff, untreated wastewater, or other unexamined contaminants. Understanding these sources is essential for developing targeted water management practices to mitigate environmental risks and ensure the safety of aquaculture products, particularly in areas like the HB reservoir, where fish farming supports food security.</p>","PeriodicalId":501,"journal":{"name":"Bulletin of Environmental Contamination and Toxicology","volume":"114 3","pages":"47"},"PeriodicalIF":2.7,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11906502/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143623065","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}
Mayra A Cañizares-Martínez, Luis A Lara-Pérez, Victor Ceja-Moreno, Silvia Granados-Puerto, Marcela Del Río-García, Santy Peraza-Echeverria, Carlos A Puch-Hau
{"title":"Physicochemical Properties and Concentration of Metal(oid)s in Soils Used for Different Periods of Time for Sugarcane Cultivation.","authors":"Mayra A Cañizares-Martínez, Luis A Lara-Pérez, Victor Ceja-Moreno, Silvia Granados-Puerto, Marcela Del Río-García, Santy Peraza-Echeverria, Carlos A Puch-Hau","doi":"10.1007/s00128-025-04009-w","DOIUrl":"10.1007/s00128-025-04009-w","url":null,"abstract":"<p><p>This study evaluated the physicochemical properties and the concentrations of metal(oid)s in soils with approximately 5, 20 and 40 years of sugarcane cultivation from a locality in Quintana Roo, Mexico. The results showed the metal(oid) concentration order Fe > Cr > V > Pb > Co > Cu > As, with a gradual increase in their concentrations up to 33,834, 76, 67, 59, 32, 22 and 14 mg kg<sup>-1</sup>, respectively, after 40 years of sugarcane cultivation. The contamination factor indicated considerable contamination for Co, Cr, Pb and V and very high contamination for Fe in soils subjected to 40 years of sugarcane cultivation. The pollution load index revealed medium pollution in soils with 5 and 20 years of sugarcane cultivation, and moderate pollution in soils with 40 years. The organic matter, organic carbon and total nitrogen contents decreased significantly as the length of sugarcane cultivation increased. These results highlight the need to implement measures for proper agricultural management.</p>","PeriodicalId":501,"journal":{"name":"Bulletin of Environmental Contamination and Toxicology","volume":"114 3","pages":"43"},"PeriodicalIF":2.7,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143623067","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}
Ilker Ugulu, Ibrahim Sahin, Ozal Guner, Ekrem Akcicek
{"title":"Biomonitoring and Source Identification of Potentially Toxic Metals in Different Plant Species in Mountain Ulus, Turkey.","authors":"Ilker Ugulu, Ibrahim Sahin, Ozal Guner, Ekrem Akcicek","doi":"10.1007/s00128-025-04028-7","DOIUrl":"10.1007/s00128-025-04028-7","url":null,"abstract":"<p><p>This study investigated the Cd, Fe, Mn, Ni, Pb, and Zn levels in Mt. Ulus plants, analysed their distribution characteristics and determined their origin using Positive Matrix Factorization (PMF) modelling. Using the multi-point sampling method, 28 plants were sampled from Mt. Ulus at altitudes ranging from 275 m to 1598 m. The following are sequences of metal concentrations with their mean values and standard errors, all measured in mg/kg by ICP-OES: Fe (380.1 ± 7.374) > Mn (141.8 ± 4.014) > Zn (33.59 ± 1.622) > Ni (2.299 ± 0.032) > Pb (1.489 ± 0.031) > Cd (0.205 ± 0.01). According to ANOVA analysis, there was no significant difference in the metal content of plant samples between woody and herbaceous stems. Additionally, no statistically significant difference was found according to altitude, except for Ni. The PMF model results indicate that human activities are the main cause of potentially toxic metal accumulations. Analyses, especially regarding Cd and Ni values, have shown that mining activities in the region play an important role in potentially toxic metal accumulation.</p>","PeriodicalId":501,"journal":{"name":"Bulletin of Environmental Contamination and Toxicology","volume":"114 3","pages":"45"},"PeriodicalIF":2.7,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143623064","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}
Jaime Rendón-von Osten, Merle M Borges-Ramírez, Norma G Ruiz-Velazco, Emmanuel Helguera, Omar Arellano-Aguilar, Alejandro A Peregrina-Lucano, Felipe Lozano-Kasten
{"title":"Glyphosate and AMPA in Groundwater, Surface Water, and Soils Related To Different Types of Crops in Mexico.","authors":"Jaime Rendón-von Osten, Merle M Borges-Ramírez, Norma G Ruiz-Velazco, Emmanuel Helguera, Omar Arellano-Aguilar, Alejandro A Peregrina-Lucano, Felipe Lozano-Kasten","doi":"10.1007/s00128-025-04022-z","DOIUrl":"10.1007/s00128-025-04022-z","url":null,"abstract":"<p><p>Glyphosate (GLY) is the most widely used herbicide globally, employed not only in agricultural settings but also in urban areas for weed control. When released into the environment, GLY is transformed into aminomethylphosphonic acid (AMPA), resulting in contamination across various environmental compartments. The objective of this study was to assess the concentrations of glyphosate and AMPA in groundwater, surface water, and soils associated with different types of crops in Mexico. The findings indicate that the highest concentrations of GLY and AMPA were detected in soils from bean crops (GLY: 826.33 µg/kg and AMPA: 339.60 µg/kg) and transgenic soybean (GLY: 565.66 µg/kg and AMPA: 1,097.79 µg/kg). Additionally, these herbicides were found in groundwater at sites near pumpkin crops (GLY: 3.53 µg/L and AMPA: 4.32 µg/L) and corn (GLY: 3.99 µg/L and AMPA: 4.80 µg/L). These results underscore the necessity of evaluating the impact of glyphosate and regulating its use, as surface and groundwater sources are utilized for human consumption.</p>","PeriodicalId":501,"journal":{"name":"Bulletin of Environmental Contamination and Toxicology","volume":"114 3","pages":"44"},"PeriodicalIF":2.7,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143623066","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}
Minseok Park, June Wee, Jino Son, Yunho Lee, Kijong Cho, Seunghun Hyun
{"title":"Soil pH and Rice Chlorophyll Content as Indicators of Grain Productivity and Microbial Community in Acid-Exposed Paddy Mesocosms.","authors":"Minseok Park, June Wee, Jino Son, Yunho Lee, Kijong Cho, Seunghun Hyun","doi":"10.1007/s00128-025-04019-8","DOIUrl":"10.1007/s00128-025-04019-8","url":null,"abstract":"<p><p>The objective of this study was to evaluate the applicability of soil pH and chlorophyll content as predictive indicators of damage in paddy fields affected by HCl spills, based on causal relationships. Five doses of HCl (e.g., 1, 50, 100, 200, and 500-fold of PNEC) were added to the paddy mesocosm during the rice heading stage. In the 7th week after the acid addition, rice grain quality (e.g., 1000-grain weight and filled grain ratio), soil microbial diversity (e.g., Operational Taxonomic Units (OTUs) and Shannon index), and soluble nutrients (e.g., NH<sub>4</sub><sup>+</sup>, NO<sub>3</sub><sup>-</sup>, SiO<sub>2</sub>, P<sub>2</sub>O<sub>5</sub>, and basic cations) were measured. Causal relationships among variables were analyzed using the Partial Least Square Path Model (PLS-PM). At the dose of 500×PNEC, all rice plants lodged when pH < 4. At 100×PNEC and 200×PNEC, the number of immature grains increased, resulting in a reduction in grain quality of over 18%. At 200×PNEC, the microbial OTUs and the Shannon index decreased by 30%. Notably, the proportion of Planctomycetes, the dominant phylum in the control soil, decreased. The reduction of Planctomycetes led to excessive NH<sub>4</sub><sup>+</sup> accumulation in the soil, which leads to an undesirable increase of chlorophyll content thereby deteriorating grain quality. The causal relationship suggests that information of soil pH and leaf chlorophyll can aid us in predicting damage for grain quality and microbial diversity.</p>","PeriodicalId":501,"journal":{"name":"Bulletin of Environmental Contamination and Toxicology","volume":"114 3","pages":"46"},"PeriodicalIF":2.7,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143623068","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":"Microplastics Contamination in the Kalirejo Coastal Area, East Java, Indonesia and their Presence in Green Mussels (Perna viridis).","authors":"Nanik Retno Buwono, Agoes Soegianto, Retno Hartati, Rakhel Marsyanda Vanny, Zalfa Nurul Abidah","doi":"10.1007/s00128-025-04025-w","DOIUrl":"10.1007/s00128-025-04025-w","url":null,"abstract":"<p><p>Microplastic pollution is a significant global environmental concern affecting marine ecosystems and human health. This study investigated the presence and abundance of microplastics in the waters and green mussels (Perna viridis) of the Kalirejo coastal area in East Java, Indonesia, a region known for extensive mussel cultivation. The results showed that microplastics were present in all water and mussel samples, with higher concentrations at shallower depths. Fragments were the most prevalent microplastic type, followed by fibers and films, with polyethylene (PE) identified as the dominant polymer. A strong positive correlation between microplastic concentrations in water and mussel tissues indicates direct environmental uptake. These findings highlight widespread microplastic contamination in the Kalirejo coastal area, raising concerns about environmental impacts and health hazards associated with consuming contaminated shellfish.</p>","PeriodicalId":501,"journal":{"name":"Bulletin of Environmental Contamination and Toxicology","volume":"114 3","pages":"41"},"PeriodicalIF":2.7,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143596003","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}