Bulletin of Environmental Contamination and Toxicology最新文献

{"title":"Impact of Chlorine Substitution on the Interaction Between Amide Herbicides and Alkaline Phosphatase: Insights into Molecular Mechanisms and Structure-Activity Relationships.","authors":"Xiaoning Wang, Jiayin Ding, Yiyong Xu, Jingyan Lin, Yongkun Wu, Yuhan Zhao, Wenyue Wang, Shan Hong, Ziheng Wan, Kaipeng Sun, Dong Chen, Chuanxi Yang, Yizhen Tang, Yihua Xiao, Weihua Zhao, Haofen Sun, Weiliang Wang","doi":"10.1007/s00128-025-04084-z","DOIUrl":"10.1007/s00128-025-04084-z","url":null,"abstract":"<p><p>Amide herbicides (AHs), commonly applied in agriculture, are now known to inhibit the activity of alkaline phosphatase (AKP), subsequently disturbing the soil microbial community and spurring significant shifts in soil nutrient dynamics. The complex mechanisms governing the interaction between AHs and AKP, along with the impact of halogen substituents in AHs on AKP function and this study sets out to investigate these interactions. By integrating computational docking techniques with Spearman correlation analysis and focusing on seven typical AHs, we probed the mechanisms of the AHs-AKP complex and aimed to clarify the structure-activity relationship between these herbicides and AKP. Our findings disclose that within the AKP-AHs complex, the proportion of neutral amino acids peaked at 48.41%. The chief interaction patterns between AKP and AHs hinged on hydrogen bonding and hydrophobic interactions. Among the AHs, butachlor exhibited the largest binding area (BA ≈ 452.61 Ų), implying stronger binding than its counterparts. In contrast, propanil manifested the maximum absolute value of binding energy (|BE|) at 2.94 kJ/mol, indicating that it may possess stronger binding characteristics despite the larger BA of butachlor. This discrepancy may be attributed to the chlorine atom content of propanil relative to the other AHs, which enhances its interaction with AKP through increased hydrophobicity and specific interactions. Moreover, our analysis reveals a negative correlation between the molecular weight (MW) of the AHs and their corresponding |BE| values, signifying that as MW rises, the binding energy of the AHs-AKP interaction declines. This suggests a potential inverse relationship. In sum, these findings provide critical technological insights and foundational theory for understanding the harmful impacts of AHs via the halogen effect (Cl) on soil enzyme inhibition, with implications for health risk management and regulation. These insights are crucial for understanding the environmental impact of AHs and informing risk management strategies.</p>","PeriodicalId":501,"journal":{"name":"Bulletin of Environmental Contamination and Toxicology","volume":"115 2","pages":"19"},"PeriodicalIF":2.7,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144666767","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":"Size Distributions and Health Risks of Atmospheric Particulate Polycyclic Aromatic Hydrocarbons in an Inland Urban Area of Baoding, China.","authors":"Keqiang Wang, Yasheng Shi, Tedros Gebrezgiabhier Gebreyesus, Nana Ma, Xuchu Zhu, Lei Tong, Lining Zhao, Sijun Dong, Hang Xiao","doi":"10.1007/s00128-025-04088-9","DOIUrl":"https://doi.org/10.1007/s00128-025-04088-9","url":null,"abstract":"<p><p>Previous health risk assessments of particulate polycyclic aromatic hydrocarbons (PAHs) have ignored the size distributions and respiratory tract deposition rates, resulting in significant bias. To calculate the health risks of depositing PAHs, this study investigates the size-resolved dynamics of particulate PAHs and associated deposition fluxes in Baoding, a representative inland city in China's Beijing-Tianjin-Hebei air pollution corridor. Size-segregated aerosol sampling (n = 20 batches) across four seasons revealed: coarse particles (> 2.1 μm) dominated PM mass in spring (67%), summer (60%), and autumn (60%), while winter exhibited fine particle (< 2.1 μm) dominance (62% of TSP). All PAHs demonstrated bimodal size distributions with accumulation (0.43-0.65 μm) and coarse modes (4.7-5.8 μm). Low-molecular-weight PAHs show more significant volatility-driven migration to coarse particles than high-molecular-weight PAHs. The deposition fluxes of size-segregated PM and PAHs were calculated by multi-path particle dosimetry model. Compared with adults, children have a 32-40% higher flux of coarse PM deposition. In addition, the deposition fluxes of coarse PM is higher than fine PM. These findings challenge conventional fine PM-centric risk frameworks, highlighting the necessity to reconsider coarse PM toxicity for child-specific exposure in northern China's inland cities.</p>","PeriodicalId":501,"journal":{"name":"Bulletin of Environmental Contamination and Toxicology","volume":"115 2","pages":"18"},"PeriodicalIF":2.7,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144666768","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":"Effects of Microplastic on Rice Seed Germination Mitigated by Brassinolide.","authors":"Momo Gui, Di Wu, Lijun Han, Hongji Pan, Ming Zhuang, Shiyu Wang, Mengyuan Cao, Jin Hua","doi":"10.1007/s00128-025-04091-0","DOIUrl":"https://doi.org/10.1007/s00128-025-04091-0","url":null,"abstract":"<p><p>There have been reports confirming the presence of microplastic pollution in rice fields, which have potential negative effects on rice cultivation. In this article, the growth characteristics and oxidative stress levels of rice seeds were analyzed in the presence of polystyrene microplastics with different particle sizes (50 μm, 50 nm) and concentrations (0-1500 mg/L), as well as their co-exposure to 2,4-epibrassinolide. The micro-particles had no significant effect on the growth of rice seeds, however, the nano-plastic had an inhibitory effect on the growth of rice seed and the effect was the strongest at high concentration. The addition of brassinolide alleviated the inhibitory effect of the nano-plastics on rice seed. The oxidative stress level results indicated that the addition of brassinolide weakened the oxidation induction effects of microplastics, improved the antioxidant capacity of rice seeds under microplastics stress.</p>","PeriodicalId":501,"journal":{"name":"Bulletin of Environmental Contamination and Toxicology","volume":"115 2","pages":"17"},"PeriodicalIF":2.7,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144641430","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":"The Risk of Polycyclic Aromatic Hydrocarbon in Surface Sediments of the Mekong River for Ecological and Human Health: Case Study of Vietnam.","authors":"Thao Thanh Xuan Le, Linh Thi Nguyen, Long Duc Huynh, Uyen Thi Nguyen, Mai Thi Nguyen, Thanh Duy Nguyen, Ngo Dinh Vu, Tuan Minh Le, Thi Trang Luu, Tien Vinh Nguyen, Manh Van Do","doi":"10.1007/s00128-025-04089-8","DOIUrl":"https://doi.org/10.1007/s00128-025-04089-8","url":null,"abstract":"<p><p>This study investigated the distribution, sources, and ecological toxicity of polycyclic aromatic hydrocarbons (PAHs) in surface sediments along the Mekong River, from its entry into Vietnam to its outflow into the East Sea. The results showed that total PAH concentrations ranged from 53.66 to 1205.35 ng/g dry weight, with an average of 281.08 ± 391.13 ng/g dry weight. Among the 16 PAH compounds analysed, Pyrene (Pyr) and Fluoranthene (Flu) were detected in all sediment samples. Naphthalene (Nap) had the highest concentration among the detected PAHs. Diagnostic ratio and principal component analyses indicated that PAHs originated from mixed sources, including traffic emissions, coal and biomass combustion, petroleum leakage, and wastewater discharge. Based on the risk quotient (RQ), PAHs posed low to moderate ecological risks. Both adults and children in the study area may be exposed to cancer risks due to the presence of carcinogenic PAHs in sediment samples.</p>","PeriodicalId":501,"journal":{"name":"Bulletin of Environmental Contamination and Toxicology","volume":"115 2","pages":"16"},"PeriodicalIF":2.7,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144641431","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":"Acute Toxicity Effects of Aged Polyethylene and Polylactic Acid Microplastics on Microcystis aeruginosa: Growth and Oxidative Stress Response.","authors":"Jingru Fang, Chenglong Xu, Fei Yang, Bo Chen, Qiaoping Kong, Tianran Ye, Siping Niu, Jianjun Lian","doi":"10.1007/s00128-025-04087-w","DOIUrl":"10.1007/s00128-025-04087-w","url":null,"abstract":"<p><p>The usage of biodegradable plastics as a substitute for traditional plastics is increasing yearly. However, the toxicity of biodegradable microplastics to freshwater microalgae is still unclear compared to traditional microplastics; In addition, the toxic release effects of different aging methods on biodegradable plastics are also unknown. Taking polyethylene (PE) and polylactic acid (PLA) as the research objects, the acute toxicity (96 h) of Microcystis aeruginosa under high temperature aging (HT) and ultraviolet aging (UV) conditions was investigated. Results showed that more cracks appeared on the surface of aged PLA, and the inhibition effect on microalgae was greater than that of aged PE. Moreover, the inhibition rate of microplastics on microalgae after UV aging (PLA: 39.64%, PE: 32.66%) was higher than that of HT aging (PLA: 30.95%, PE: 26.36%). In addition, the reactive oxygen species (ROS) levels in the treatment groups subjected to UV aging (PLA: 7-45%, PE: 3-28%) increased more than those subjected to HT aging (PLA: 6-31%, PE: 2-20%). This study revealed the toxicity difference between PLA and PE on Microcystis aeruginosa under different aging conditions, which provided a theoretical basis for studying the effects of aging biodegradable plastics on freshwater microalgae.</p>","PeriodicalId":501,"journal":{"name":"Bulletin of Environmental Contamination and Toxicology","volume":"115 1","pages":"15"},"PeriodicalIF":2.7,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144625112","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":"Effect of Graphene Nanosheets on the Histological Abnormalities in the Liver and Intestine of Cirrhinus mrigala Treated with Plant Extracts of Tamarix aphylla and Albizia lebbeck.","authors":"Aisha Fatima, Muhammad Asad, Tehseen Fatima, Fan Renqing, Kinza Fatima, Liu Manhong","doi":"10.1007/s00128-025-04077-y","DOIUrl":"10.1007/s00128-025-04077-y","url":null,"abstract":"<p><p>This study assesses the histological abnormalities induced by graphene nanosheets in Cirrhinus mrigala fish (Mrigal) treated orally with plant extracts of Tamarix aphylla and Albizia lebbeck. In 1st phase of experiment LC₅₀ of graphene nanosheets was determined as 81.22 mg/kg over 96 h. In 2nd phase of experiment fish were exposed to 15th, 10th, and 5th fraction of the LC50 for 28 days exhibited liver and intestinal abnormalities, including vacuolation, necrosis, villous atrophy, and crypt hyperplasia. In 3rd phase of experiment co-treatment with Tamarix aphylla and Albizia lebbeck (5, 10, and 15 mg/kg) for 56 days reversed these changes. Graphene nanosheets increased oxidative stress parameters (glutathione, malondialdehyde, catalase, and lipid peroxidase), but the effect is considerably reversed by treatment with plant extracts. Raman and TEM analyses confirmed graphene nanosheet characterization, while GCMS and HPLC analysis of plant extracts revealed antioxidant properties. The study concludes that graphene nanosheets induce oxidative stress and histological damage in Cirrhinus mrigala (Mrigal), mitigated effectively by Tamarix aphylla and Albizia lebbeck extracts.</p>","PeriodicalId":501,"journal":{"name":"Bulletin of Environmental Contamination and Toxicology","volume":"115 1","pages":"13"},"PeriodicalIF":2.7,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144625114","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":"Herbicides in Argentine Pampas Shallow Lakes and Frequency of Testicular Lesions in the Pejerrey Fish (Odontesthes bonariensis).","authors":"Nicolás Torres Martínez, Diego Cristos, Ariadna A Castillo, Gustavo E Berasain, Pedro Carriquiriborde, Leandro A Miranda","doi":"10.1007/s00128-025-04086-x","DOIUrl":"10.1007/s00128-025-04086-x","url":null,"abstract":"<p><p>This study assessed the herbicides atrazine (ATZ) and glyphosate (GLP) concentration in water and sediment of Argentine Pampas shallow lakes with agriculture activity (AA) mainly transgenic crops of soybeans and corn on the coast near the water (Cochicó and Guaminí), and in a lake with extensive cattle activity (CA) close to their coasts (La Salada de Monasterio). Also, the concentration of ATZ in the muscle and the frequency of testicular histopathological lesions (THL) of pejerrey fish (Odontesthes bonariensis) were studied. In the water, maximum concentrations of ATZ (0.279 µg l^- 1) and GLP (0.015 µg l^- 1 were found in Guaminí and Cochicó shallow lakes. For sediments, the maximum concentrations were 32.6, 45.2, and 14.9 µg kg^- 1 for ATZ, GLP, and its metabolite aminomethylphosphonic acid (AMPA), respectively in the same shallow lakes. The results showed that 30.6% of the pejerrey sampled had THL being fish from Guaminí (60%) the most affected. Of the pejerrey analyzed for ATZ, 80.82% of them had this herbicide in the muscle. The highest percentage of THL was found again in pejerrey from Guaminí (68.75). with sterility as dominant (59.38%). These findings suggest a possible adverse effect on the gonads related to the herbicides identified in the water, sediments and in muscle which is an alarm signal in using agrochemicals and protecting the fish biota.</p>","PeriodicalId":501,"journal":{"name":"Bulletin of Environmental Contamination and Toxicology","volume":"115 1","pages":"14"},"PeriodicalIF":2.7,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144625115","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":"Comparative Removal Efficiency of Polypropylene Microplastics from Aqueous Solutions by Filtration, Centrifugation, and Flocculation.","authors":"Amir Hossein Hamidian, Saba Sadat Miri Karahroudi, Meisam Feizi, Yu Zhang, Min Yang","doi":"10.1007/s00128-025-04083-0","DOIUrl":"10.1007/s00128-025-04083-0","url":null,"abstract":"<p><p>Microplastics, which decompose from large pieces of plastic and cause water pollution, are becoming an increasing environmental problem due to their stable structure, high mobility, and ease of interaction with organic compounds in the environment. Large amounts of microplastics enter surface waters through wastewater and stormwater. Therefore, it is necessary to develop simple and accessible methodologies as a foundation for establishing reliable and effective strategies for microplastic removal from aquatic environmental samples. In this study, the removal of microplastics (< 1 mm) at laboratory scale using synthetic microplastics is investigated by three methods: filtration, centrifugation and flocculation. For this purpose, polypropylene-based microplastic particles are prepared and turbidity is used to measure removal. In this study, all three methods are investigated to determine a more effective method for the removal of microplastic particles. Among the three methods studied, the centrifuge method showed higher removal efficiency than the filtration and flocculation methods for the removal of microplastic particles from aqueous solution. The removal efficiency of microplastic particles by the centrifugation method reached 95.6% and was 90.6% by the filtration method. The flocculation method has a lower removal efficiency of microplastic particles than the centrifugation and filtration methods, ranging from 75.6 to 81.8%. In general, the results show that centrifugation is the more suitable and efficient method to remove microplastic particles from aqueous solution.</p>","PeriodicalId":501,"journal":{"name":"Bulletin of Environmental Contamination and Toxicology","volume":"115 1","pages":"12"},"PeriodicalIF":2.7,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144625113","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":"Alteration of Molting-Related Metabolites in the Carapace of Kuruma Prawn (Penaeus japonicus) Juveniles After Fipronil Exposure.","authors":"Takeshi Hano, Mana Ito, Yuki Takai, Yuji Oshima","doi":"10.1007/s00128-025-04080-3","DOIUrl":"10.1007/s00128-025-04080-3","url":null,"abstract":"<p><p>In aquatic arthropods, molting is essential for normal development. An earlier study showed that 3-phosphoglycerate (3PG) and phosphoenolpyruvate (PEP), which are present in the exoskeleton, play important roles in its calcification. Under normal culture conditions, we found higher levels of 3PG and PEP at the pre-molt stage than that at the post-molt stage in the carapace of kuruma prawn juveniles (Penaeus japonicus). In subsequent experiments, exposure of environmentally relevant concentrations of fipronil (0.1, 0.05, and 0.025 µg L^-1) for 24-96 h resulted in significant decreases in 3PG and PEP in the exposure group. Furthermore, we found higher internal insecticide concentrations in molted prawns than those in unmolted prawns. Given that molting requires a higher amount of energy, these changes are indicative of the allocation of more and less energy for detoxification and molting, respectively, which may contribute to the mitigation of fipronil bioconcentration.</p>","PeriodicalId":501,"journal":{"name":"Bulletin of Environmental Contamination and Toxicology","volume":"115 1","pages":"8"},"PeriodicalIF":2.7,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144607056","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":"Immobilization of Pb in Alkaline Soil Amend with Nano-hydroxyapatite: Speciation, Bioavailability, and Bioaccessibility.","authors":"Kai Che, Jinxing Yu, Yukun Ju, Xuan Zhao, Yunqian Gong, Chongming Chen","doi":"10.1007/s00128-025-04078-x","DOIUrl":"10.1007/s00128-025-04078-x","url":null,"abstract":"<p><p>With the development of nanotechnology, nano-hydroxyapatite (nHAP) is gradually used for the immobilization and remediation of heavy metals in soil. However, there are few studies on the immobilization of Pb in alkaline agriculture soil amend with nHAP. This study applied 0.5% and 1% nHAP as remediation materials to two Pb contaminated alkaline soils (A and B) from the surrounding of substation in northern China. Comprehensive evaluations of Pb mobility were conducted using the Tessier sequence extraction method, DTPA extraction, and in vitro gastrointestinal simulation (SBRC and PBET methods). The Tessier sequence extraction results revealed that following nHAP addition, there was a shift of Pb towards the residual fraction, with decreases in exchangeable, carbonate, and Fe/Mn oxide fraction. The risk assessment code (RAC) decreased from 27.7 to 36.0% to 21.9-35.1%, and the mobility factor (MF) dropped from 78.8 to 85.9% to 65.6-75.0%. DTPA extraction indicated contrasting effects: the bioavailable Pb extracted by DTPA assay in soil A increased from 36.6% to 43.0-58.3%, while the bioavailable Pb in soil B decreased from 68.3% to 48.4-52.7%. Similar to DTPA results, the Pb bioaccessibility of soil A increased from 63.9% to 41.9% to 70.0-72.6% and 47.6-63.8% in SBRC and PBET gastric phase after 0.5% and 1.0% nHAP treatments 90 days. However, the Pb bioaccessibility of soil B decreased from 76.6% to 56.5% to 54.9-56.5%, 35.0-35.6% by SBRC and PBET, respectively. The study highlights the potential of nHAP in alkaline soil, but the immobilization efficiency varied with soil characteristics.</p>","PeriodicalId":501,"journal":{"name":"Bulletin of Environmental Contamination and Toxicology","volume":"115 1","pages":"10"},"PeriodicalIF":2.7,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144607058","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}