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Comprehensive insight into the occurrence characteristics,influencing factors and risk assessments of antibiotics in the Chaohu Basin

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Frontiers of Environmental Science & Engineering 2024年第5期18卷 57-71页

作者： Shuanggang Hu Hongzhi Zhang Yongjie Yang Kangping Cui Junjie Ao Xuneng Tong Mengchen Shi Yi Wang Xing Chen Chenxuan Li Yihan Chen School of Resources and Environmental Engineering Hefei University of TechnologyHefei230009China Ministry of Education-Shanghai Key Laboratory of Children’s Environmental Health Xinhua HospitalShanghai Jiao Tong University School of MedicineShanghai200092China Department of Civil & Environmental Engineering National University of SingaporeSingapore117576Singapore College of Resources and Environment Anhui Agricultural UniversityHefei230036China

The pollution of antibiotics in aquatic environments has received extensive ***,research on antibiotic contamination in river-lake systems,a significant form of modern aquatic environments,still needs to be *** study focuses on the Chaohu Basin(China)investigating the occurrence characteristics,influencing factors,and risk assessments of antibiotics in the river-lake *** total antibiotic concentrations in the water phase and sediment phase were 3.14–1887.49 ng/L and 0.92–1553.75 ng/g,*** was the predominant antibiotic in the water phase,whereas tetracycline prevailed in the sediment *** differences in concentration and structural composition of antibiotics between the tributaries(river system)and Chaohu Lake were observed,indicating the involvement of various geochemical processes in the attenuation of antibiotics during transport to the receiving *** analysis suggested that the western river is the primary source of antibiotics in Chaohu *** nutrient influx in heavily polluted areas is crucial to addressing the escalating issue of antibiotic pollution in the river-lake *** widespread occurrence of clindamycin in the waters is likely due to wastewater treatment plant discharges,and high-intensity human activities continue to exacerbate antibiotic *** assessment indicated that sulfamethoxazole,tetracycline,lincomycin,and clindamycin ranked in the top four with the highest risks to the most sensitive aquatic ***,the antibiotics presented no risk to consumer *** study provides valuable insights for controlling antibiotic pollution in riverlake systems.

关键词： Antibiotics occurrence characteristics Influencing factors Risk assessments River-lake system

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The occurrence characteristics of oil in shales matrix from organic geochemical screening data and pore structure properties:An experimental study Author links open overlay panel

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Petroleum Science 2024年第1期21卷 1-13页

作者： Zi-Zhi Lin Jun-Qian Li Shuang-Fang Lu Qin-Hong Hu Peng-Fei Zhang Jun-Jie Wang Qi Zhi Hong-Sheng Huang Na Yin Yue Wang Tian-Chen Ge National Key Laboratory of Deep Oil and Gas China University of Petroleum(East China)Qingdao 266580ShandongChina School of Geosciences China University of Petroleum(East China)Qingdao 266580ShandongChina Sanya Offshore Oil&Gas Research Institute Northeast Petroleum UniversitySanya 572025HainanChina College of Earth Science and Engineering Shandong University of Science and TechnologyQingdao 266590ShandongChina

The occurrence characteristics of shale oil are of great significance to the movability of shale *** this study,the occurrence characteristics of oil in the shale matrix at Funing Formation shale in Subei Basin were quantitatively evaluated by organic geochemistry and microscopic pore structure characterization *** Multiple Isothermal Stages Pyrolysis(MIS)experiment results show that the content of total oil,adsorbed oil,and free oil in the shales are 3.15-11.25 mg/g,1.41-4.95 mg/g,and 1.74-6.51 mg/g,*** which the silicon-rich shale has the best *** relative content of free oil shows an increasing trend in pores with pore diameters greater than 3 *** the relative content of free oil reaches 100%,the pore size of silicon-rich shale is about 200 nm,while that of calcium-rich shale,clay-rich shale,and siliceous mixed shale is about 10 *** occurrence law of adsorbed oil is opposite to that of free oil,which indicates that shale oil will occur in the pores and fractures in a free state in a more extensive pore size range(>200 nm).This study also enables us to further understand the occurrence characteristics of shale oil under the interaction of occurrence state and occurrence space.

关键词： Shale oil occurrence characteristics Sequential solvent extraction Low-temperature nitrogen adsorption Funing Formation Dongtai Depression

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occurrence characteristics,Prevention and Control of Pests and Diseases of Tropical Outdoor Cultivated Rosa chinensis

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Plant Diseases and Pests 2014年第6期5卷 19-21,28页

作者： Lin Hengmi Xu Huiqiu Zhang Hailiang Qiao Shunfa Hong Shiyang Zhang Yilei Li Jingtian Chen Xingyu Sanya Land Seed Co. Ltd.

According to the hazards and occurrence characteristics of major diseases of Rosa chinensis, such as powdery mildew, branch canker and black spot, and major pests such as mites, aphids, thrips and Lepidoptera, prevention and control of the diseases and pests should be based on pruning, garden cleaning, water and fertilizer management, and chemical control can be applied as the supplement. Suitable prevention and control measures should be adopted for preventing the disea- ses and pests scientifically.

关键词： Rosa chinensis Pests and diseases occurrence characteristics Prevention and control

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occurrence characteristics and Prevention and Control Measures of Spodoptera frugiperda in Maize

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Plant Diseases and Pests 2023年第3期14卷 8-9页

作者： Liping DONG Chunming LIU Plant Protection and Quarantine Workstation of Xundian County Xundian 655200China Nuoji Village Committee Hekou TownXundian CountyXundian 655201China

Based on practical work experience,this paper analyzed the occurrence characteristics and control measures of Spodoptera frugiperda in *** measures including forecasting and early warning,regional prevention and control,agricultural prevention and control,physical prevention and control,chemical prevention and control,and biological prevention and control can effectively control the damage of *** and guarantee the safety of food *** results will provide some reference for the prevention and control of ***.

关键词： Spodoptera frugiperda occurrence characteristics Prevention and control measures Maize

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occurrence,sources,and relationships of soil microplastics with adsorbed heavy metals in the Ebinur Lake Basin,Northwest China

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Journal of Arid Land 2022年第8期14卷 910-924页

作者： ZHANG Zhaoyong GUO Jieyi WANG Pengwei School of Environment and Surveying Engineering Suzhou UniversitySuzhou 234000China College of Resource and Environmental Sciences Xinjiang UniversityUrumqi 830046China Key Laboratory of Oasis Ecology Ministry of EducationXinjiang UniversityUrumqi 830046China

There is a lack of research on soil microplastics in arid oases considering the rapid economic development of northwestern ***,we studied the occurrence and sources of microplastics in soil,as well as the relationships between microplastics and adsorbed heavy metals in the Ebinur Lake Basin,a typical arid oasis in *** showed that(1)the average microplastic content in all soil samples was 36.15(±3.27)mg/*** contents of microplastics at different sampling sites ranged from 3.89(±1.64)to 89.25(±2.98)mg/***,the proportions of various microplastic shapes decreased in the following order:film(54.25%)>fiber(18.56%)>particle(15.07%)>fragment(8.66%)>foam(3.46%);(2)among all microplastic particles,white particles accounted for the largest proportion(52.93%),followed by green(24.15%),black(12.17%),transparent(7.16%),and yellow particles(3.59%).The proportions of microplastic particle size ranges across all soil samples decreased in the following order:1000-2000μm(40.88%)>500-1000μm(26.75%)>2000-5000μm(12.30%)>100-500μm(12.92%)>0-100μm(7.15%).FTIR(Fourier transform infrared)analyses showed that polyethylene terephthalate(PET),polypropylene(PP),polycarbonate(PC),polyethylene(PE),and polystyrene(PS)occurred in the studied soil;(3)random forest predictions showed that industrial and agricultural production activities and the discharge of domestic plastic waste were related to soil microplastic pollution,in which agricultural plastic film was the most important factor in soil pollution in the study area;and(4)seven heavy metals extracted from microplastics in the soil samples showed significant positive correlations with soil pH,EC,total salt,N,P,and K contents(P<0.01),indicating that these soil factors could significantly affect the contents of heavy metals carried by soil *** research demonstrated that the contents of soil microplastics are lower than other areas of the world,and they mainly come from industrial and agricultural activitie

关键词： occurrence characteristics source analysis soil microplastics heavy metals Ebinur Lake Basin

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Micro-distribution and mechanical characteristics analysis of remaining oil

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Petroleum 2017年第4期3卷 483-488页

作者： Hongxia Sun Yujie Zhao Jun Yao School of Petroleum Engineering China University of Petroleum(East China)QingdaoChina Shengli Oilfield Company SINOPECDongyingChina

As the water drive reservoir enters extra high water cut stage(greater than 80%),remaining oil distribution becomes increasingly *** on micro residual oil in pore appears particularly important for reservoir development at extra high water cut *** occurrence characteristics recognition helps to understand the distribution of remaining oil and the mechanical characteristics of oil is the guide for tapping the remaining *** the basis of pore scale oil ewater two phase flow experiments,micro distribution of remaining oil is divided into four occurrence states in accordance with oil features at different stage of water flooding,the flake of remaining oil,oil column,oil droplet and oil film.A quantitative characterization method of remaining oil occurrence states is *** using micro numerical simulation method,change rules of four occurrence states of remaining oil during the process of water displacement and the mechanical characteristics of different occurrence state of remaining oil are *** show that the continuous oil phase gradually transforms to discontinuous phase and even to dispersed phases during the water flooding *** extra high water cut stage,most of remaining oil are dispersed oil columns,oil droplets and oil films,which are the main target of remaining oil to be *** changing water flow direction or increasing the displacement pressure gradient,the surface adsorption force acting on oil columns are overcome,and then the oil columns begin to move and finally to be produced *** droplets in pore-throat center are scoured and carried out by water as the increase of the injection volume,while the oil droplets in blind ends and the oil films are extracted out by adding chemicals to reduce the interfacial tension,so as to enhance oil *** water flooding reservoir,the corresponding tapping measures for four types of oil occurrence states brought forward have great meanings of improving reservoi

关键词： Pore scale Remaining oil occurrence characteristics Mechanical characteristics Extra high water cut stage

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Study on Epidemic characteristics and Its Causes of Wheat Stripe Rust in Nanchong City

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Agricultural Science & Technology 2015年第2期16卷 292-297页

作者：彭昌家丁攀白体坤冯礼斌陈如胜王婉秋尹怀中龙维国肖立文旭四川省南充市植保植检站四川南充637000 四川省营山县植保植检站四川营山638100 四川省南充市土肥站四川南充637000 四川省南充市高坪区植保植检站四川南充637100 四川省仪陇县植保植检站四川仪陇637641 四川省南充市嘉陵区植保植检站四川南充637005 四川省西充县植保植检站四川西充637200

On basis of the research result of stripe rust for 16 years since 1999,the epidemic characteristics and trend of stripe rust in the city were ***,the earlier the initial stage appeared,the heavier the disease would ***,stripe rust has two introduction infection peaks,of which the first peak plays a key *** farmlands,there are one to three epidemic peaks,and the infection area of the first peak plays the key role on the epidemic area of that *** addition,the accumulated areas of late January was in significantly positive correlation with annually total area,with a correlation coefficient of 0.769 *** recent 16 years,the frequency of severe stripe rust was as high as 81.25% which was 50% higher than that before *** slight stripe rust became just in 2013,with a frequency of 6.3%,which indicated that the city has become a region hit by severe stripe *** internal reason is the reduction or loss of wheat variety＇s resistance to tripe rust for a new physiological race of rust is becoming pathogenic stronger and be the major *** fluctuation of temperatures in warm winter and spring,foggy and dew days slants much would be the external reason.

关键词： Wheat Stripe rust occurrence characteristics Epidemic rule Warning Improvement

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Global occurrence,bioaccumulation factors and toxic effects of polychlorinated biphenyls in tuna:A review

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Emerging Contaminants 2020年第1期6卷 388-395页

作者： Jingqian Xie Zhihe Bian Tian Lin Ling Tao Qiang Wu Ming Chu College of Marine Ecology and Environment Shanghai Ocean UniversityShanghai201306China State Key Laboratory of Organic Geochemistry Guangdong Key Laboratory of Environment and ResourcesGuangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou510640China

Polychlorinated biphenyls(PCBs)tend to accumulate in adipose tissue and induce toxicity due to their high lipophilicity and *** play an important role in the ocean food web and human *** can damage the growth of tuna directly and have some adverse effects on human *** review aims to provide geographic variations,bioaccumulation factors and the toxic effects of PCBs in *** levels found were varied significantly among the different regions and it showed a trend of offshore greater than pelagic,with the northern hemisphere higher than the southern *** highest PCB concentration of tuna was in FAO area *** all of the specimens presented similar domain configuration,while their concentrations varied *** congeners and concentrations in tuna were affected by a vast of factors,such as geographical distribution,tissue types,trophic level and growth stage,gender,tuna species and physical and chemical properties of *** can damage reproductive,neurologic and development *** review gives a systematic insight into PCBs in tuna and highlights the more attention should be paid to the long-term changes of PCBs in tuna and *** is also a need to strengthen the assessment of PCB impacts on tuna ecology.

关键词： Tuna Polychlorinated biphenyls occurrence characteristics Influential factors Toxic effects

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Advances in Research of characteristics and Removal of Microplastics in Sewage Treatment Plants

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Asian Agricultural Research 2022年第11期14卷 41-47页

作者： Shasha LIU Jianping FU Yue YANG School of Environmental and Chemical Engineering Zhaoqing UniversityZhaoqing 526061China South China Institute of Environmental Sciences Ministry of Ecology and EnvironmentGuangzhou 510655China

Microplastic pollution has become a worldwide *** discharge of sewage treatment plants(STPs)or wastewater treatment plant(WWTPs)is an important way for microplastics to enter the *** study reviewed the sources and occurrence characteristics(type,size,color and components)of microplastics in domestic and foreign sewage *** elaborated the removal principles of microplastics by primary,secondary and tertiary *** addition,the removal effects of various treatment units and different processes on microplastics were *** the future,the removal mechanism of microplastics in sewage treatment plants should be discussed in more depth,so as to further improve the removal rate of microplastics by optimizing and transforming traditional sewage treatment ***,it is necessary to develop new technologies/processes specifically for the removal of microplastics and promote them to practical applications.

关键词： Microplastics Sewage treatment plant(STP) Wastewater treatment plant(WWTP) occurrence characteristics Removal

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Study on the occurrence and Epidemic Regularity and Region Division of Rice Blast in Nanchong City

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Agricultural Science & Technology 2016年第4期17卷 927-937页

作者：彭昌家白体坤丁攀冯礼斌杨宇衡南充市植保植检站四川南充637000 西南大学植物保护学院重庆400715

With the aim to improve the level of monitoring and warning as well as the comprehensive control of rice blast disease, and to feasibly reduce the disease threat in Nanchong City, the methods of GPS and GIS, systematical monitoring and field survey, rice blast resistance identification, physiologic races of rice blast monitoring, and meteorological data analysis were performed to study the occurrence and epidemic region division, precise demarcation and occurrence and epidemic regularity of rice blast in Nanchong City. This study first completed the epidemic region division and precise demarcation; first clarified the initial affection（beginning period） locations, occurrence characteristics, epidemic trends and characteristics; explicated the existence of four epidemic peak periods of rice blast in the field, where the damage areas of first peak period played a decisive role during the blast epidemic years; in late May, the cumulative occurrence areas and annual occurrence areas presented higher positive correlation with the correlation coefficient of 0.817;and established a prediction model of occurrence areas per year based on the disease field rate at the end of boot stages and the diseased plant rate at dough stages. The results of investigation on the impact factors investigation of blast disease in Nanchong in recent years suggested that the internal causes were the decrease or loss of blast resistance of the rice cultivars, as well as the increase of physiological races with strong resistance to rice blast and the emergence of new virulent physiologic varieties; the external causes were suitable temperature, too much rainy, and sunlight shortage. Between 2010 and 2015, the short-term forecast accuracy for rice blast in Nanchong was up to 100%, and medium-and long-term forecast accuracy was also up to 98% and 95%, respectively, which increased by 5-15% than that before 1997, thereby making the control effect of rice blast in Nanchong increased by 15-30%.

关键词： Rice Rice blast Region division occurrence characteristics Epidemic regularity Early warning level

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