检索结果-内蒙古大学图书馆

SSRN 2023年

作者： Zeng, Jinfeng Zhang, Miao Qin, Xinxin He, Yi Liu, Xinyue Zhu, Yichun Liu, Zuwen Li, Wentao Dong, Huiyu Qiang, Zhimin Lian, Junfeng Jiangxi Provincial Key Laboratory of Water Ecological Conservation at Headwater Regions Jiangxi University of Science and Technology 1958 Ke-jia Road Ganzhou341000 China Ganzhou Key Laboratory of Basin Pollution Simulation and Control Jiangxi University of Science and Technology 1958 Ke-jia Road Ganzhou341000 China National－local Joint Engineering Laboratory of Water Engineering Safety and Efficient Utilization of Resources in Poyang Lake Watershed Nanchang Institute of Technology Nanchang330099 China KeyLaboratoryofDrinkingWaterScienceandTechnology ResearchCenterforEcoEnvironmental Sciences Chinese Academy of Sciences 18 Shuang-qing Road Beijing100085 China Hydrology and Water Resources Monitoring Center for Ganjiang Upstream Watershed 8 Zhang-jia-wei Road Ganzhou341000 China

UV/H2O2 has been used as an advanced oxidation process to remove organic micropollutants from drinking water. Residual H2O2 should be quenched to avoid potential damage to the distribution system or disinfectant wastage during the subsequent chlorination/chloramination process. Granular activated carbon (GAC) filter can quench the residual oxidant and eliminate some of the dissolved organic matter. However, knowledge on the kinetics and governing factors of GAC quenching of residual H2O2 from UV/H2O2 and the mechanism underlying the enhancement of the process by HCO3– is limited. Therefore, this study aimed to analyse the kinetics and influential factors, particularly the significant impact of bicarbonate (HCO3–). H2O2 decomposition by GAC followed first-order kinetics, and the rate constants normalised by the GAC dosage (kn) were steady (1.6 × 10–3 L g–1 min–1) with variations in the GAC dosage and initial H2O2 concentration. Alkaline conditions favour H2O2 quenching. Basic groups of the GAC contributed more to H2O2 quenching than did acidic groups, with their specific kn values being 8.9 and 2.4 min–1 M–1, respectively. The presence of chloride, sulphate, nitrate, and dissolved organic matter inhibited H2O2 quenching, while HCO3– promoted it. The interfacial hydroxyl radical (HO•) zones were visualised on the GAC surface, and HCO3– addition increased the HO• concentration. HCO3– increased the concentration of persistent free radicals (PFRs) on the GAC surface, which mainly contributed to HO• generation. A significant enhancement of HCO3– on H2O2 quenching by GAC was also verified in real water. This study revealed the synergistic mechanism of HCO3– and GAC on H2O2 quenching and presents the potential applications of residual H2O2 in the H2O2-based oxidation processes. © 2023, The Authors. All rights reserved.

关键词： Sulfur compounds

来源：评论

学校读者我要写书评

暂无评论

Competitive transport of heavy metals in soil: Cadmium dynamics with numerical modeling

引用

Journal of Hazardous Materials 2025年 495卷

作者： Yiren Li Jiawen Zhang Yuke Lv Gina Garland Jianming Xu Xingmei Liu State Key Laboratory of Soil Pollution Control and Safety Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment College of Environmental and Resource Sciences Zhejiang University Hangzhou 310058 China Engineering Technology Center for Pollution Prevention and Control of Taizhou Taizhou University Jiaojiang Zhejiang Province 318000 China Department of Environmental Systems Science ETH Zürich Zurich 8092 Switzerland

Transport of composite heavy metals in the soil profile is a complex process that poses significant risks to groundwater and deep soil layer. This study conducts an in-depth simulation and analysis of Cd transport behavior in single and composite contamination through soil penetrate tests and leaching tests, combined with the HYDRUS and CXTFIT models. The study found that Pb significantly promoted the transport rate of Cd in the soil profile, reducing the initial breakthrough time from 12 to 5 pore volumes (PV). During leaching, the presence of Pb increased the Cd concentration in the pore water by 70.2 %, further enhancing Cd's transport potential and groundwater contamination risk. The study further validated the applicability of the HYDRUS model, finding that Pb promotes the proportion of the instantaneous equilibrium site ( f ) and the first-order reaction rate coefficient ( α ) of Cd. An increase in the instantaneous adsorption ratio of heavy metals accelerates the adsorption process from the kinetic control phase. By incorporating competitive adsorption isotherms and heavy metal speciation into the HYDRUS prediction model, the model achieved a high prediction accuracy ( R 2 = 0.84) for heavy metal transport pathways in polluted sites, providing a reliable tool for the long-term evolution prediction of polluted sites.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Insights into the occurrence of ten bisphenol analogues in tidal flat and deepwater sediments in the Pearl River Basin

引用

Environmental pollution 2025年 382卷

作者： Jin-yi Sun Ze-hua Liu Can-yuan Lin Jian Gong Zhi Dang School of Environment and Energy South China University of Technology Guangzhou 510006 Guangdong Province China Key Lab Pollution Control & Ecosystem Restoration in Industry Cluster Ministry of Education Guangzhou 510006 Guangdong Province China Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling Guangzhou 510006 Guangdong Province China Guangdong Provincial Engineering and Technology Research Center for Environment Risk Prevention and Emergency Disposal South China University of Technology Guangzhou 510006 Guangdong Province China Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources School of Environmental Science and Engineering Guangzhou University Guangzhou 510006 Guangdong Province China

Bisphenol analogues (BPs), known endocrine disruptors, have raised increasing concerns due to their widespread use and potential ecological risks. Despite this, limited studies have focused on BPs in river sediments. In this study, we investigated ten BPs in different sediment types, including tidal flat and deepwater, across the Pearl River Basin. Sediment samples from the 0–15 cm depth at seven sites were also analyzed to investigate the vertical profile of BPs. In tidal flat sediments, no significant seasonal variation was observed in the total concentration of BPs (Σ10BPs), with values ranging from 20.8 to 148.1 ng/g in the dry season and 18.1–112.5 ng/g in the wet season. Spatially, the average concentration of BPs was lowest in estuarine sediments, while higher pollution levels were found in urban basin sediments. Deepwater sediments showed a higher BP concentration (average: 72.9 ng/g) compared to the corresponding tidal flat sediments (average: 65.5 ng/g), likely due to more favorable biodegradation conditions in tidal flat environments. The BP concentrations in sediment columns ranged from 12.2 to 93.8 ng/g. The vertical profile revealed that mid-layer sediments (5–10 cm) generally exhibited higher BP levels than ‌those in‌ the top (0–5 cm) and deeper (10–15 cm) layers. BPA showed significant positive correlations with total organic carbon (TOC) in tidal flat sediments. Environmental risk assessments based on the risk quotient (RQ) indicated that BP mixtures in Pearl River sediments posed low to medium risks to fish, algae, and crustaceans, with crustaceans being the most sensitive. To our knowledge, this is the first study to report the occurrence of BPs in tidal and deepwater sediments of a river.

关键词：

来源：评论

学校读者我要写书评

暂无评论

B-doped lotus pollen biochar photothermal activating periodate for acetaminophen degradation by non-radical pathway: Significance of thermal effect from the photothermal process

引用

Separation and Purification technology 2025年 375卷

作者： Lei Qin Shuyuan Hu Huan Yi Wenjun Wang Cui Lai Shiyu Liu Dengsheng Ma Tao Tong Hao Deng Guangjie Lv College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control Hunan University Changsha 410082 PR China College of Resources and Environmental Engineering Guizhou University Guiyang 550025 PR China School of Resources and Environment Hunan University of Technology and Business Changsha 410205 PR China

Periodate (PI)-based advanced oxidation emerges as a key solution for environmental remediation. However, existing activation methods are energy-intensive, driving demand for sustainable alternatives. In this study, a photothermal activation method for PI based on B-doped lotus pollen biochar (CB500) was developed to degrade acetaminophen (ACE). In the CB500/PI photothermal activation system, ACE could be completely degraded within 15 min, which was 17.71 times faster than light activation system. Quenching experiments, electron paramagnetic resonance, and electrochemical tests proved singlet oxygen ( 1 O 2 ) was the main reactive species. Photothermal contribution analysis revealed that thermal effects predominated in the system. Besides, the system showed a high resistance to interference. Its degradation capability was almost unaffected by natural organic matter (NOM) and maintained excellent degradation performance over a wide pH range. Moreover, this system exhibited potential for ACE degradation in actual water samples. This work provides novel insights into the advancement of photothermal PI activation.

关键词： Boron-doping Periodate activation Photothermal conversion Pollen Porous biochar

来源：评论

学校读者我要写书评

暂无评论

The Decontamination Behavior of Cadmium and Arsenic in Aqueous and Soil Using Alkali/Fe-Modified Cotton Straw-Based Biochar

SSRN

引用

SSRN 2023年

作者： Zeng, Linwei Luo, Dinggui Liu, Lirong Huang, Xuexia Liu, Yu Wei, Lezhang Xiao, Tangfu Wu, Qihang School of Environmental Science and Engineering Guangzhou University Guangzhou510006 China Linköping University Guangzhou University Research Center on Urban Sustainable Development Guangzhou University Guangzhou510006 China Key Laboratory for Water Quality and Conservation of the Pearl River Delta Ministry of Education Guangzhou University Guangzhou510006 China Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources Guangzhou University Guangzhou510006 China School of Environmental Science and Engineering Sun Yat-sen University Guangzhou510275 China State Key Laboratory of Geohazard Prevention and Geoenvironment Protection Chengdu University of Technology Chengdu610059 China

Fabricating low-cost and efficient adsorbents to purify aqueous and soil with Cd(II) and As(V) contaminants remains challenging. Previous studies have demonstrated that alkali-modified and iron-modified biochar promote the adsorption of cationic and anionic pollutants. Herein, alkali/Fe-modified cotton straw-based biochar (FACSB) was fabricated, and its performance and the mechanism for remediation of Cd and As in aqueous and soil were investigated. The initial pH, kinetics, isotherms, and coexisting ions on single and binary-adsorption aqueous systems, as well as the temporal effects of passivation in co-contaminated soils, were systematically examined. The results showed that the maximum adsorption capacity of Cd(II) and As(V) were 42.57 and 30.69 mg/g for single-adsorption system, 41.27 and 34.51 mg/g for binary-adsorption adsorption system, respectively, enhancing adsorption for As(V). The presence of Mg2+ and Ca2+ competed with Cd(II), whereas PO43- inhibited As(V) adsorption, and the high ionic strength exerted a detrimental impact on Cd(II) adsorption. The mechanisms for removing Cd(II) and As(V) could be mainly electrostatic attraction, precipitation, and multi-complexation. Continuous soil incubation for half-year revealed a substantial reduction in the bioavailability of Cd and As, decreasing by 79.99% and 34.72%, respectively, at 5% treatment (amendment/soil ratio). Amendment, rising soil pH and SOM facilitated to immobilize contaminants. © 2023, The Authors. All rights reserved.

关键词： Adsorption

来源：评论

学校读者我要写书评

暂无评论

The Reduced Contribution of Coal Combustion to Pb in Particle Phase after Coal-to-Gas in Urban Beijing, China

SSRN

引用

SSRN 2023年

作者： Lian, Xiufeng Liu, Fengxian Peng, Long Tang, Guigang Dao, Xu Guo, Hui Cheng, Chunlei Zhang, Guohua Bi, Xinhui Tang, Mei Lia, Lei Zhoua, Zhen Lia, Mei Institute of Mass Spectrometry and Atmospheric Environment Guangdong Provincial Engineering Research Center for On-line Source Apportionment System of Air Pollution Jinan University Guangzhou510632 China State Key Laboratory of Organic Geochemistry Guangdong Provincial Key Laboratory of Environmental Protection and Resources Utilization Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou510640 China Guangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality Guangzhou510632 China Taiyuan University of Technology Shanxi Taiyuan030024 China College of Ecology and Environment Xin Jiang University Urumqi830046 China China National Environmental Monitoring Centre Beijing100012 China Hunan Province Environmental Monitoring Cerner Hunan410014 China Guangdong MS Institute of Scientific Instrument Innovation Guangzhou510700 China

Coal-to-gas (replacing coal with natural gas) is an important energy transformation strategy for addressing environmental, but the improvement of atmospheric Pb pollution from coal-to-gas remains poorly understood. Beijing has basically realized coal-free in urban and plain areas by the end of 2018. A single particle aerosol mass spectrometry (SPAMS) was deployed to investigate the mixing state and chemical processing of Pb-rich particles in urban Beijing in 2019. Based on a large dataset of mass spectra, this study find K-Na-EC and K-OC particles associated with coal combustion. The contribution of coal combustion to atmospheric Pb decreased significantly, and iron/steel industries are the most important source of Pb after coal-to-gas. The atmospheric Pb in Beijing urban area is mainly transmitted from surrounding provinces such as Mongolia Province, Hebei Province, Liaoning Province, Anhui Province and Shandong Province. These Pb in Pb-rich particles are mainly in the form of Pb(NO3)2, through photochemical and/or aqueous phase reactions of PbCl2 and HNO3 and/or NO2 in the gas phase. These results assess the effect of coal-to-gas on the source structure and mixing state of Pb particles, and indicate that Pb pollution still needs to be paid attention to because Pb(NO3)2 abundance increases with improved control quality. © 2023, The Authors. All rights reserved.

关键词： Gases

来源：评论

学校读者我要写书评

暂无评论

Processable CMP aerogel with Ag nanocatalysts for the treatment of combined pollutant containing p- NP&MO in continuous flow

引用

Desalination and Water Treatment 2024年 319卷

作者： Songhao Luo Zhigang Yi Min Cheng Biao Song Chengyun Zhou Wenjun Wang Zhifeng Liu State Key Laboratory of NBC Protection for Civilian Beijing 102205 PR China College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education) Hunan University Changsha 410082 PR China School of Resources and Environment Hunan University of Technology and Business Changsha 410205 PR China

It is challenging to produce soft polymer materials with high surface area and nanoscale morphology that can be used for continuous flow water treatment in a processable, versatile, and stable manner. Here, we manufactured a processable Ag@CMPA-bph and used it to treat pollutants in wastewater at continuous flow conditions. The aerogel was prepared by a simple reduction method of CMP matrix and Ag metal precursors. Thermogravimetric analysis and electron microscopy showed that the aerogel had excellent thermal stability and distribution of fine Ag nanoparticles. The synthesized aerogel inherits the controllable properties of the CMP matrix and can be tailored to a specific shape for installation into the water treatment unit. In continuous flow conditions, this aerogel shows excellent catalytic activity to efficiently treat the combined pollutant containing p- nitrophenol and methyl orange ( p- NP&MO), which can reach a removal rate of more than 99 % at the flow rate of 0.6 L h -1 . Furthermore, the Ag@CMPA-bph can also be used for continuous flow treatment of pollutants in river water sample and shows robust anti-pollution load capacity and catalytic activity.

关键词： Microporous organic polymer Aerogel Nanocatalyst Hydrogenation Wastewater treatment

来源：评论

学校读者我要写书评

暂无评论

The influence of Copper and Soil type on the Uptake, Translocation of Organophosphate Esters by Corn

引用

Environmental pollution 2025年

作者： Yujie Wang Aoyu Wang Longfei Jiang Beibei Hu Chunling Luo Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control School of Environmental Science and Engineering Institute of Environmental Health and Pollution Control Guangdong University of Technology Guangzhou 510006 China State Key Laboratory of Advanced Environmental Technology Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou 510640 China Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control Guangzhou 510640 China Guangdong Provincial Key Laboratory of Environmental Protection and Resources Utilization Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou) Guangzhou 511458 China

Recent studies have highlighted the potential risks of organophosphate esters (OPEs) accumulating in the food chain; however, the key factors governing their uptake and translocation in plants remain unclear. In this study, we investigated the primary drivers influencing the fate of OPEs in corn (Zea mays L.). Our results show that log Kow , DOC content, and Cu concentration play critical roles in regulating OPEs uptake. Specifically, log Kow values were negatively correlated with both the shoot concentration factor (SCF, R 2 > 0.70) and translocation factor (TF, R 2 > 0.42), indicating that less hydrophobic OPEs are more readily translocated to plant tissues. Corn grown in magalitic soil accumulated OPEs at levels averaging 24% higher than those grown in krasnozem, corresponding to 2.2 times greater DOC content in magalitic soil. Cu addition (1600 mg/kg) led to a 181% and 47% increase in OPE accumulation in roots grown in krasnozem and magalitic soils, respectively, likely due to Cu-induced disruption of root cell membrane permselectivity. Plants in krasnozem soil experienced more severe Cu-induced toxicity, attributed to its lower pH (4.47), resulting in greater OPE accumulation than in magalitic soil. Moreover, enhanced correlations between SCF (R 2 > 0.70), TF (R 2 > 0.58), and log Kow following Cu exposure suggest that Cu may inhibit active transport while promoting passive diffusion. These findings offer a comprehensive understanding of OPE behavior in the plant-soil system and provide important insights for evaluating the environmental risk of OPE contamination in crops.

关键词：

来源：评论

学校读者我要写书评

暂无评论

The Role of Iron Present in Water Environment in Degradation of Polyamide Membranes by Free Chlorine

SSRN

引用

SSRN 2022年

作者： Xie, Yingqi Yang, Linyan Chen, Xueming Zhao, Huihui Cao, Guomin Li, Xuesong Bai, Lichun Meng, Shujuan Wang, Rong National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery East China University of Science and Technology Shanghai200237 China School of Resources and Environmental Engineering East China University of Science and Technology Shanghai200237 China Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology College of Environment and Resources Fuzhou University Fujian Fuzhou350116 China State Key Laboratory of Pollution Control and Resource Reuse Shanghai Institute of Pollution Control and Ecological Security School of Environmental Science and Engineering Tongji University Shanghai200092 China Key Laboratory of Traffic Safety on Track Ministry of Education School of Traffic & Transportation Engineering Central South University Changsha410075 China School of Space and Environment Beihang University Beijing100191 China Nanyang Environment and Water Research Institute Nanyang Technological University 1 Cleantech Loop CleanTech One Singapore637141 Singapore

Chlorine exposure is one of the most commonly encountered challenges that cause polyamide (PA) membrane failure in use. The synergistic effect of iron, which is ubiquitous in water environment, with chlorination is however often overlooked. This study systematically investigated the performance of thin film composite (TFC) nanofiltration (NF) membranes under dynamic exposure of free chlorine and Fe 2+ in filtration process. It was found that the 36%−70% reduction of water flux after chlorine-only exposure was mainly attributed to the competing effects of reduced hydrophilicity by N-chlorination over decreased crosslinking by chlorination-promoted hydrolysis, while the opposite trends of salt rejection for mild and severe chlorination were believed to be caused by the competing effects of decreased crosslinking and increased charged density. The presence of Fe 2+ in the feed generally resulted in a higher (or equivalent) water flux and a lower salt rejection compared to chlorine-only conditions, owing to catalytic oxidation and iron deposition. Fe 2+ -induced catalytic oxidation by hydroxyl radicals (·OH) formed by the reaction between free chlorine and Fe 2+ promoted C−N breakage and led to a much looser separation layer, which contributes more remarkably to performance variation (i.e., 2.5−6.5 time increase of water flux and near-zero salt rejection for 1000 mg/L Cl 2 ) than chlorination. In addition, the much lower normalized salt rejection for 10 mg/L Fe 2+ than 0.1−1 mg/L Fe 2+ (10%−30% vs. 100%−120%) under 10−100 mg/L Cl 2 at 24 h was attributed mainly to a much denser iron deposition layer, which neutralized the membrane surface charge and decreased the electrostatic repulsion between salts and membranes. Hence, the combination of chlorination, catalytic oxidation and iron deposition was proposed to be the mechanisms synergistically affecting the membrane behavior. © 2022, The Authors. All rights reserved.

关键词： Catalytic oxidation

来源：评论

学校读者我要写书评

暂无评论

Weakened Casual Feedback Loops Subjected to Intensive Restoration Efforts and Climate Changes in a Freshwater Lake

SSRN

引用

SSRN 2023年

作者： Fu, Hui Ge, Yili Cai, Guojun Deng, Jianmin Liu, Huanyao Wu, Aiping Li, Youzhi Li, Wei Yuan, Guixiang Jeppesen, Erik Ecology Department College of Resources & Environments Hunan Provincial Key Laboratory of Rural Ecosystem Health in Dongting Lake Area Hunan Agricultural University Changsha410128 China Taihu Laboratory for Lake Ecosystem Research State Key Laboratory of Lake Science and Environment Nanjing Institute of Geography and Limnology Chinese Academy of Sciences Nanjing210008 China Research Institute of Ecology & Environmental Sciences Nanchang Institute of Technology Nanchang330099 China Aarhus University Vejlsøvej 25 Silkeborg8600 Denmark University of Chinese Academy of Sciences Beijing China Limnology Laboratory Department of Biological Sciences Centre for Ecosystem Research and Implementation Middle East Technical University Ankara Turkey Institute of Marine Sciences Middle East Technical University Erdemli-Mersin33731 Turkey Institute for Ecological Research and Pollution Control of Plateau Lakes School of Ecology and Environmental Science Yunnan University Kunming China

Understanding how phytoplankton interacts with local and regional drivers as well as their feedbacks is a great challenge, and quantitative analyses of the regulating role of human activities and climate changes on these feedback loops are also limited. By using monthly monitoring dataset (2000-2017) from Lake Taihu and empirical dynamic modelling to construct causal networks, we quantified the strengths of causal feedbacks among phytoplankton, local environments, zooplankton, meteorology as well as global climate oscillation. Prevalent bidirectional causal linkages between phytoplankton and the tested drivers were found, providing holistic and quantitative evidence of the ubiquitous feedback loops. Phytoplankton exhibited the highest feedbacks with total inorganic nitrogen and ammonia and the lowest with nitrate. The feedbacks between phytoplankton and environmental factors from 2000 to 2017 could be classified by two groups: the local environments (e.g., nutrients, pH, transparency, zooplankton)-driven enhancement loops promoting the response of the phytoplankton, and the climate (e.g., wind speed)-driven regulatory loops suppressing it. The two counterbalance groups modified the emergent macroecological patterns. Our findings revealed that the causal feedback networks loosened significantly after 2007 following nutrient loading reduction and unsuccessful biomanipulation restoration attempts by stocking carp. The strength of enhancement loops underwent marked decreases leading to reduced phytoplankton responses to the tested drivers, while the climate (decreasing wind speed, warming winter)-driven regulatory loops increased– like a tug-of-war. To counteract the self-amplifying feedback loops, the present eutrophication mitigation efforts, especially nutrient reduction, should be continued, and introduction of alternative measures to indirectly regulate the critical components (e.g., pH, Secchi depth, zooplankton biomass) of the loops would be beneficial. © 2023, T

关键词： Lakes

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：