检索结果-内蒙古大学图书馆

Prediction and controlling factors of high-fluoride groundwater in the Yellow River Basin based on machine learning model

引用

Groundwater for Sustainable Development 2025年 30卷

作者： Su, Chunli Ge, Weili Xie, Xianjun Guo, Zhihao Luo, Zhaohui Gan, Yiqun Xiao, Ziyi Gao, Yanhui Yang, Yanmei MOE Key Laboratory of Groundwater Quality and Health & School of Environmental Studies China University of Geosciences Wuhan430074 China State Environmental Protection Key Laboratory of Source Apportionment and Control of Aquatic Pollution Ministry of Ecology and Environment Wuhan430074 China Geological Survey Institute of Inner Mongolia Autonomous Region Huhhot011020 China Center for Endemic Disease Control Chinese Center for Disease Control and Prevention Harbin Medical University Harbin150081 China

Long-term consumption of high-fluoride water (F > 1.5 mg/L) has significant negative effects on human health. In the Yellow River Basin of northern China, fluorosis resulting from geogenic groundwater fluoride contamination has been observed in several basins. In this study, the machine learning algorithm regression modeling was employed to predict the distribution of high-fluoride groundwater and potential population at risk using 30337 groundwater samples and 40 relevant environmental factors, with random forest (RF) was identified as the optimal algorithm. The model incorporated various environmental factors, including hydrogeology, climate, soil, topography, and human activities and the model performed well, with the value of AUC of 0.86. The climatic variables were identified as the primary factors influencing the model based on the ranking of their importance. The probability distribution map with a resolution of 250 m drawn from the modelling results shows that high-fluoride groundwater is mainly distributed within the basins, Loess Plateau, the front edge and the southern part of the Yellow-Huai-Hai River Plain (also known as North China Plain). The climate plays a vital role in regulating the distribution patterns of high-fluoride groundwater. Based on different probability cut-off values, it is estimated that approximately 7.307 and 8.899 million people in the study area may be at risk of direct consumption of fluoride-contaminated groundwater. High-fluoride groundwater primarily occurs in shallow pore aquifers of alluvial plains. Fine-grained sediments with high clay content and high levels of cations with exchangeable sites favor the enrichment of fluoride in groundwater. Alluvial and alkaline soils exhibit significant impacts on the enrichment of fluoride. Significant temperature differences and uneven precipitation are the main climatic factors affecting fluoride enrichment in groundwater. This study helps to enhance the understanding of the spatial di

关键词： Aquifers

来源：评论

学校读者我要写书评

暂无评论

Full-scale studies are closer to reality than lab-scale ones: Tertiary treatment constructed wetlands maintain robust removal capability for pharmaceuticals and personal care products in cold weather conditions

引用

Bioresource Technology 2025年 432卷 132661页

作者： Wang, Jiaxi Ye, Beibei Yu, Xia Yan, Ruiqi Lin, Hui Man, Ying Sui, Qian State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process School of Resources and Environmental Engineering East China University of Science and Technology Shanghai200237 China Beijing100015 China School of Chemistry and Environment Guangdong Ocean University Zhanjiang524088 China Shanghai Institute of Pollution Control and Ecological Security Shanghai200092 China

In contrast to previous lab-scale studies, full-scale studies show that low temperatures do not significantly hinder pharmaceutical and personal care product (PPCP) removal in tertiary treatment constructed wetland (CW) systems. This study investigated PPCP removal pathways (substrate adsorption, plant uptake, microbial degradation) in two full-scale CWs, highlighting the differences between full-scale and lab-scale study outcomes. Results demonstrated that low temperatures did not adversely affect PPCP removal in full-scale CWs. Substrate adsorption was minimally impacted at a relevant concentration of 100 ng/L, unlike lab-scale studies with typically higher concentrations (1 mg/L). Plant uptake was not affected, as mature plants in CWs exhibited a lower PPCP uptake capacity compared to seedlings in lab-scale studies. Furthermore, low temperatures did not reduce microbial biodegradation performance. However, low temperatures increased dissolved oxygen concentrations in the influent, supporting aerobic microbial activity. These findings emphasize the value of full-scale CWs for stable PPCP removal under low-temperature conditions. © 2025

关键词： Inclusions

来源：评论

学校读者我要写书评

暂无评论

Impact of mixed benzene site exposure on bioaccessibility in simulated lung fluids and health risk assessment

引用

Journal of Hazardous Materials 2025年 494卷 138466页

作者： Ma, Xuemin Wang, Ying Chen, Shuhe Wu, Changyong Wang, Weipeng Wang, Yue Engineering Research Center of Environmental Pollution Control Chinese Research Academy of Environmental Sciences Beijing100012 China State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental Sciences Beijing100012 China State Key Laboratory of Environmental Criteria and Risk Assessment and State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution Chinese Research Academy of Environmental Sciences Beijing100012 China College of Urban and Rural Construction Agricultural University of Hebei Baoding071001 China

Benzene series (BTEX) are predominant volatile organic compounds (VOCs) in petroleum production and downstream industrial sites, primarily enter human lungs via inhalation, posing significant health risks. To address the critical limitation of existing risk assessments that focus solely on individual components, this study investigated benzene and ethylbenzene based on contamination characteristics of petroleum refineries in Northwest China. An innovative in vitro membrane oxygenator system was developed to simulate single and mixed exposure scenarios at three soil concentrations: low (5 mg/kg), medium (10 mg/kg), and high (20 mg/kg), respectively. Health risk indices including inhalation risk (Inh), hazard quotient (HQ), and lifetime cancer risk (LCR) were calculated using bioaccessibility–adjusted parameters to precisely compare risk variations across exposure modes. Results demonstrated significant synergistic effects in gas-liquid mass transfer kinetics under mixed exposure (P © 2025 The Authors

关键词： Health risks

来源：评论

学校读者我要写书评

暂无评论

High-Throughput Identification and Prioritization of Endocrine-Disrupting Chemicals: A Novel Method and its Application in Organic-Contaminated Soil

SSRN

引用

SSRN 2025年

作者： Han, Tianhao Jin, Jinsha Jin, Mengke Zhang, Rong Fan, Tianle Qu, Changsheng Ding, Liang Nie, Li Guo, Jing Tan, Haoyue Shi, Wei Dalian University of Technology China State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Nanjing210023 China Jiangsu Province Ecology and Environment Protection Key Laboratory of Chemical Safety and Health Risk Nanjing210023 China Key Laboratory of Environmental Remediation and Ecological Health Ministry of Industry and Information Technology Jiangsu Environmental Engineering Technology Co. Ltd Jiangsu Nanjing210019 China

The environmental issues related to endocrine-disrupting chemicals (EDCs) have attracted global attention. Although previous studies have successfully screened EDCs in the environment through high-throughput qualitative methods, identifying key substances quantitatively remains challenging. To address this challenge, a new approach based on machine learning and relative equivalent potency (REP) has been developed to assess key EDCs in complex pollution scenarios. To overcome the challenge of obtaining concentration in high-throughput screening, semi-quantitative models were developed using three machine learning algorithms. The random forest algorithm showed the best performance, achieving R2 values of 0.8662 and 0.8578 for positive and negative ion modes, respectively. The quantitative evaluation of endocrine-disrupting effects, based on the concept of "equivalent toxicity", allows for calculating individual EDC contributions to the bioassay equivalency (BEQ) of a sample, thereby identifying key EDCs. This method was applied to organic-contaminated soil samples from a contaminated site, leading to the detection of 143 EDCs across four categories. 4-Nitrophenol, stearic acid, androstanolone, oxyquinoline, estradiol, triclocarban, 4-octylphenol, triclosan, diarylpropionitrile, and triethanolamine were prioritized among these EDCs. In conclusion, this work presents a quantitative strategy for identifying key EDCs in organic-contaminated soil. This study provides both methodological and data support for controlling and remediating EDC pollution. © 2025, The Authors. All rights reserved.

关键词： Triethanolamine

来源：评论

学校读者我要写书评

暂无评论

Mobility of nitenpyram through saturated soil porous media: Combined effects of biochar colloids and low-molecular-weight organic acids

引用

Journal of Molecular Liquids 2025年 417卷

作者： Zhu, Yuwei Wang, Bin Xu, Fen Xu, Bingyao Farooq, Usman Chen, Weifeng Qi, Zhichong State Environmental Protection Key Laboratory of Synergetic Control and Joint Remediation for Soil & Water Pollution College of Ecology and Environment Chengdu University of Technology Chengdu610059 China Henan Joint International Research Laboratory of Environmental Pollution Control Materials College of Chemistry and Molecular Sciences Henan University Kaifeng475004 China Department of Environmental Science Miami College of Henan University Kaifeng475004 China Institute of Geography Ministry of Education Key Laboratory of Humid Subtropical Eco-geographical Process Fujian Provincial Key Laboratory for Plant Eco-physiology School of Geographical Sciences Fujian Normal University Fujian Fuzhou350007 China

Using biochar as a soil amendment is a newly developed approach that effectively reduces the adverse effects of neonicotinoid pesticides. Low-molecular-weight organic acids (LMWOAs), as active organic substances in the soil rhizosphere environment, may impact the co-mobility features of pesticides and biochar colloids. However, the influences of organic acids on biochar colloid-mediated transport of neonicotinoid pesticides in soils have not been systematically performed. In this study, the influences of three typical LMWOAs, such as citric acid, tartaric acid, and acetic acid, on the mobility features of nitenpyram (NTP, a common neonicotinoid pesticide) in the absence or presence of biochar colloids in saturated soil were explored. Generally, the results clarified that biochar colloids inhibited NTP mobility at pH 5.0 or 7.0 due to the deposition of colloid-associated NTP and the additional active deposition sites for contaminants caused by the adsorbed biochar colloids on soil surfaces. However, LMWOAs facilitated NTP mobility under experimental conditions, which stemmed from the steric effect, the competitive deposition between organic acids and pesticide molecules, and the preventing interaction between pesticide molecules and soil organic matter induced by surface LMWOA coating on soil. Interestingly, LMWOAs weakened the inhibitory effects of biochar colloids on NTP transport due to the enhanced free NTP mobility and the colloid-associated NTP transport. Meanwhile, the extent of the effects of LMWOAs was highly dependent on organic acid types (acetic acid © 2024 Elsevier B.V.

关键词： Citric acid

来源：评论

学校读者我要写书评

暂无评论

Surface catalytic degradation of ciprofloxacin by ferrihydrite sulfidation under ambient conditions

引用

Environmental Pollution 2025年 371卷 125945页

作者： Chen, Xiru Bai, Lihua Li, Hongjian Wang, Xinhao Wang, Chao Fang, Yanfen Gu, Cheng State Key Laboratory of Pollution Control and Resource Reuse School of Environment Nanjing University Nanjing210023 China Key Laboratory of Environmental Remediation and Ecological Health Ministry of Industry and Information·Technology Jiangsu Province Ecology and Environment Protection Engineering Research Center of Groundwater Pollution Prevention and Control Jiangsu Environmental Engineering Technology Co. Ltd. Nanjing210019 China College of Materials and Chemical Engineering China Three Gorges University Hubei Yichang443002 China

Dissolved sulfide (S(-II)) is abundant in sediments and capable of initiating the sulfidation reactions of iron-bearing minerals, in which the reaction mechanisms have been well documented. However, the impact of the S(-II)/Fe concentration ratio on reactive oxygen species (ROS) formation and the fate of co-existing contaminants upon iron-bearing minerals sulfidation under ambient conditions remains inadequately explored. Herein, the transformation of ciprofloxacin (CIP) by ferrihydrite sulfidation under ambient conditions was systematically investigated. Our findings indicated that the rate of CIP degradation initially increased with rising S(-II)/Fe concentration ratios, but subsequently decreased as the ratio continued to elevate. Evidence from electron paramagnetic resonance, molecular probing and quenching experiments revealed that the superoxide anion radical (O2•-), primarily produced from the reaction between O2 and surface-bound Fe(II), was the dominant contributor to the accelerated transformation of CIP. Upon being attacked by ROS, CIP underwent degradation via carboxyl substitution, defluorination, hydroxylation, piperazine ring ketonization and piperazine ring cleavage. Additionally, common water quality factors, i.e., pH, natural organic matter (NOM) and inorganic anions could also significantly influence the degradation processes of CIP during ferrihydrite sulfidation under ambient conditions. This research offers valuable insights into the significant function of mineral sulfidation in facilitating the formation and reactivity of ROS, which sheds light on enhanced elimination of organic contaminants in sediments. © 2025 Elsevier Ltd

关键词： Reactive oxygen species

来源：评论

学校读者我要写书评

暂无评论

Tracing anthropogenic imprints on polybrominated and polychlorinated dibenzo-p-dioxin/furans in soil: A comprehensive field study in an urban agglomeration of China

引用

Environmental Research 2025年第Pt 1期279卷 121750页

作者： Liu, Ming-Yang Li, Hui-Ru Peng, Ping-An Song, Ai-Min Li, Yang Xie, Fei-Xiang Zhang, Yong-Hong Hu, Jian-Fang State Key Laboratory of Advanced Environmental Technology and Guangdong Key Laboratory of Environmental Protection and Resources Utilization Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou510640 China SCNU Environmental Research Institute Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment School of Environment South China Normal University Guangzhou510006 China University of Chinese Academy of Sciences Beijing100049 China CAS Center for Excellence in Deep Earth Science Guangzhou510640 China Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control Guangzhou510640 China

Polybrominated and polychlorinated dibenzo-p-dioxin/furans (PBDD/Fs and PCDD/Fs) are primarily generated through anthropogenic thermal and chemical processes involving bromine and chlorine, respectively. However, the differential impacts of these anthropogenic activities on their environmental occurrences remain incompletely characterized yet. We conducted a comprehensive field soil study in the Pearl River Delta (PRD), a representative urban agglomeration in South China, to investigate the occurrence, sources, and risks of PBDD/Fs and PCDD/Fs. Compared to PCDD/Fs, PBDD/Fs in the PRD soils demonstrated comparable ubiquity and enrichment potential in organic-rich soils, but exhibited distinct compositions, inverse spatial distributions, and concentrations one to three orders of magnitude lower. PBDD/Fs in these samples were predominantly derived from bromine-involved industries (particularly those related to polybrominated diphenyl ether (PBDE)), thermal-related activities, and vehicular emissions. Consequently, they showed higher levels in highly industrialized/urbanized regions of the PRD and displayed positive correlations with local industrial/urban-related socioeconomic parameters, including gross domestic product (GDP), industrial output, population density, and volumes of vehicles, wastewater, waste gas, and waste incineration. In contrast, PCDD/Fs in these samples were primarily contributed by local agricultural activities (particularly the historical use of pentachlorophenol (PCP)/PCP-Na), thereby exhibiting significant positive correlations with local grain acreage, grain yield, and consumptions of pesticides and agricultural films. The contributions from biomass/waste open-burning and metalworking-related industries were three times lower. Unlike organic carbon content, the particle size of the PRD soils demonstrated insignificant influences on the distributions of PBDD/Fs and PCDD/Fs. PCDD/Fs and PBDD/Fs collectively exhibited notable carcinogenic risks i

关键词： Refuse incineration

来源：评论

学校读者我要写书评

暂无评论

Synergistic effect of size sieving, electrostatic interaction and interfacial electric field for highly-precisive Li+ separation with graphene oxide-based membrane

引用

Separation and Purification Technology 2025年 372卷

作者： Li, Enze Li, Zelong Zhu, Hongli Xia, Qiancheng Pan, Zihe Xu, Zhaozan Gao, Guandao Guan, Guoqing Cheng, Fangqin Institute of Resources and Environmental Engineering State Environmental Protection Key Laboratory of Efficient Utilization Technology of Coal Waste Resources Shanxi Laboratory of Yellow River Shanxi University No. 92 Wucheng Road Shanxi Taiyuan030006 China State Key Laboratory of Pollution Control and Resource Reuse School of Environment Nanjing University No. 163 Xianlin Road Nanjing210023 China Hirosaki University 3-Bunkyocho Hirosaki036-8561 Japan

The sustainable and efficient lithium supply is one of the prerequisites and important supports for the transformation of global energy towards electrification and decarbonization. However, current established membrane materials for lithium recovery from salt-lake brine with high Mg/Li ratio still suffer from complex preparation process, poor stability and low selectivity. Herein, we develop a stable graphene oxide (GO)-based membrane with controllable interlayer spacing at angstrom level and positive charged surface through a facile method for highly efficient lithium separation. Specially, the interlayer spacing is precisely adjusted using dicarboxylic acids with different chain lengths through esterification reaction with GO sheets, and the poly(allylamine) (PAA) is coated on it to construct the positive charged surface. Experiments with DFT calculations demonstrate that the geometrical configuration of GO-dicarboxylic acid and the interlayer spacing with glutaric acid (GA) is most suitable for Li+ separation. The synergy between crosslink of dicarboxylic acid and permeation of PAA enhances the stability of membrane. The obtained GO-GA-PAA membrane exhibits excellent Li+ sieving performance with Li+/Mg2+ selectivity up to 34.41 under the optimal operation condition, and outstanding cycling stability. The characterizations including solid zeta potential and atomic force microscope (AFM) indicate that the presence of positive charges on the surface can remarkably improve the Li+/Mg2+ selectivity. The surface positive charge exerts stronger electrostatic repulsive towards Mg2+, which can also generate an interfacial electric field to induce the dehydration of Li+, ultimately promoting the transmission of Li+ across the membrane. The synergistic effect of size sieving, electrostatic repulsive and interfacial electric field is proposed as the fundamental mechanism of Li+ selective separation. This work opens an avenue for designing new strategies to recover lithium fr

关键词： Phosphorylation

来源：评论

学校读者我要写书评

暂无评论

High Abundance of Atmospheric Sulfonates Derived from Light-Duty Gasoline Vehicles

ACS ES&T Air

引用

ACS ES&T Air 2025年第4期2卷 607-614页

作者： Shuang Chen Huixia Han Lihong Ren Yisheng Xu Libin Wu Yuanguan Gao Yuanbi Yi Xinping Yang Mingliang Fu Hang Yin Yan Ding Pingqing Fu State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental Sciences Beijing 100012 China；School of Earth System Science Tianjin University Tianjin 300072 China School of Earth System Science Tianjin University Tianjin 300072 China State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental Sciences Beijing 100012 China Department of Ocean Science and Center for Ocean Research in Hong Kong and Macau The Hong Kong University of Science and Technology Hong Kong SAR China State Environmental Protection Key Laboratory of Vehicle Emission Control and Simulation Chinese Research Academy of Environmental Sciences Beijing 100012 China

Particulate matter (PM) emissions from light-duty gasoline vehicles (LDGV) pose a threat to both air quality and human health. However, the molecular compositions and chemical properties of these complex mixtures are poorly understood. In this study, we performed a detailed characterization of exhaust PM from LDGV at various speed phases at the molecular level by employing ultra-high-resolution Fourier transform ion cyclotron resonance mass spectrometry. We found that with increasing speed, the number of organic compounds increased significantly, especially organic nitrogen-containing and sulfur-containing compounds. Moreover, the increase of speed leads to high temperature and high pressure in the cylinder, which in turn leads to a series of thermal cracking–polymerization–cyclization reactions, resulting in new particulate matter with more aromatic structures. In addition, considerable intermediate volatility organic compounds and semivolatile organic compounds were identified in the exhaust PM. Notably, we observed the presence of sulfonates in tailpipe particulate matter during low- or high-speed phases, which highlights a previously negligible source of organic sulfonates in the atmosphere.

关键词：

来源：评论

学校读者我要写书评

暂无评论

The Transferrin a Signaling Pathway Mediates Uranium-Induced Hematopoietic Dysfunction

SSRN

引用

SSRN 2025年

作者： Gao, Jin Huang, Haiwen Cui, Fengmei Tu, Yu Luo, Fajian Chen, Qiu Chen, Na Wan, Jun Sun, Liang Cao, Yiyao Ren, Hong State Key Laboratory of Radiation Medicine and Protection School of Radiation Medicine and Protection Soochow University Suzhou215123 China Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions Suzhou215123 China Department of Occupational Health and Radiological Protection Zhejiang Provincial Center for Disease Control and Prevention Hangzhou310051 China Department of Hematology The First Affiliated Hospital of Soochow University Suzhou215006 China

Objective: This study was designed to explore the toxic effects of Transferrin a(tfa)-mediated uranium exposure on the hematopoietic system. Methods: Zebrafish embryos were subjected to uranium nitrate solutions at concentrations of 50, 100, 250, and 500 μg/L for a defined period, followed by sample collection. The impact of uranium on hematopoietic system development in zebrafish was evaluated through hemoglobin staining, qRT-PCR, and in situ hybridization. RNA-Seq was utilized to detect differentially expressed genes (DEGs) in embryos exposed to 100 μg/L uranium, with subsequent bioinformatics analysis to confirm these DEGs. Furthermore, blood samples from patients with hematological disorders and impaired hematopoietic function were collected, and RNA-Seq was applied to identify DEGs. Results: Uranium exposure in zebrafish embryos led to reduced hemoglobin expression, with key transcription factors for primitive and definitive hematopoiesis being significantly downregulated at 100 μg/L uranium exposure. Overexpression of tfa resulted in a marked increase in hemoglobin content and upregulation of gata1, a key factor in primitive hematopoiesis. Patients with hematopoietic dysfunction exhibited abnormalities in the tfa signaling pathway. Conclusion: Tfa plays a role in mediating the inhibitory effects of uranium on hematopoietic function. © 2025, The Authors. All rights reserved.

关键词： Hemoglobin

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：