检索结果-南通市图书馆

Re-Imagining Drinking water safety based on 21st century science: Microbial pathogens, emerging contaminants, byproducts, and health risks:Preface

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2022年第7期34卷 1-2页

作者： Carsten Prasse Xin Yang Chao Chen Bin Xu Xing-Fang Li Department of Environmental Health and Engineering Johns Hopkins UniversityUSA School of Environmental Science and Engineering Sun Yat-sen UniversityChina School of Environment Tsinghua UniversityChina School of Environmental Science and Engineering Tongji UniversityChina Department of Laboratory Medicine and Pathology University of AlbertaCanada

Regulatory and technological solutions to ensure safe Drinking water are not keeping up with the scope and severity of Drinking water quality problems. Drinking water resources are degrading as a result of agricultura... 详细信息

关键词： wastewater runoff Drinking

Effects of disinfection efficiency on microbial communities and corrosion processes in Drinking water distribution systems simulated with actual running conditions

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2020年第2期32卷 273-282页

作者： Ying Zhu Lu Chen Hong Xiao Fei Shen Shihuai Deng Shirong Zhang Jinsong He Chun Song Xie Wang Jianhua Zhang Li Gong Chun Hu Institute of Ecological and Environmental Sciences Sichuan Agricultural UniversityChengduSichuan 611130China Rural Environment Protection Engineering&Technology Center of Sichuan Province Sichuan Agricultural UniversityChengduSichuan 611130China College of Environmental Sciences Sichuan Agricultural UniversityChengduSichuan 611130China Soil and Fertilizer Research Institute Sichuan Academy of Agricultural SciencesChengduSichuan 610066China Key Laboratory of Agricultural Environment of Southwest China Ministry of Agriculture and Rural AffairsChengduSichuan 610066China College of Forestry Sichuan Agricultural UniversityChengduSichuan 611130China Key Laboratory for Water Quality and Conservation of the Pearl River Delta Ministry of EducationInstitute of Environmental Research at Greater BayGuangzhou UniversityGuangzhouGuangdong 510006China

The effects of disinfection efficiency on microbial communities and the corrosion of cast iron pipes in Drinking water distribution systems(DWDSs) were studied.Two annular reactors(ARs) that simulated actual running conditions with UV/Cl2 disinfection and chlorination alone were used.High chlorine consumption and corrosion rate were found in the AR with UV/Cl2.According to functional genes and pyrosequencing tests, a high percentage of iron recycling bacteria was detected within the biofilm of the AR with Cl2 at early running stage, whereas siderophore-producing bacteria were dominant in the biofilm of the AR with UV/Cl2.At the early running stage, the sequential use of UV light and an initial high chlorine dosage suppressed the biomass and iron-recycling bacteria in both bulk water and biofilms, thereby forming less protective scales against further corrosion, which enhanced chlorine consumption.Non-metric multidimensional scaling analysis showed that the bacterial communities in the ARs shaped from within rather than being imported by influents.These results indicate that the initial high disinfection efficiency within the distribution system had not contributed to the accumulation of iron-recycling bacteria at the early running stages.This study offer certain implications for controlling corrosion and water quality in DWDSs.

关键词： Disinfection efficiency Biofilm Iron-recycling bacteria Corrosion Drinking water distribution systems

Enhanced removal of organic matter and typical disinfection byproduct precursors in combined iron–carbon micro electrolysis-UBAF process for Drinking water pre-treatment

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2019年第4期31卷 315-327页

作者： Yinghan Chen Tao Lin Wei Chen Ministry of Education Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes Hohai University College of Environment Hohai University

The organic matter and two types of disinfection byproduct(DBP) precursors in micropolluted source water were removed using an iron–carbon micro-electrolysis(ICME)combined with up-flow biological aerated filter(UBAF) process. Two pilot-scale experiments(ICME-UBAF and UBAF alone) were used to investigate the effect of the ICME system on the removal of organic matter and DBP precursors. The results showed that ICME pretreatment removed 15.6% of dissolved organic matter(DOM)and significantly improved the removal rate in the subsequent UBAF process. The ICME system removed 31% of trichloromethane(TCM) precursors and 20% of dichloroacetonitrile(DCAN) precursors. The results of measurements of the molecular weight distribution and hydrophilic fractions of DOM and DBP precursors showed that ICME pretreatment played a key role in breaking large-molecular-weight organic matter into low-molecular-weight components, and the hydrophobic fraction into hydrophilic compounds, which was favorable for subsequent biodegradation by UBAF.Three-dimensional fluorescence spectroscopy(3D-EEM) further indicated that the ICME system improved the removal of TCM and DCAN precursors. The biomass analysis indicated the presence of a larger and more diverse microbial community in the ICME-UBAF system than for the UBAF alone. The high-throughput sequencing results revealed that domination of the genera Sphingomonas, Brevundimonas and Sphingorhabdus contributed to the better removal of organic matter and two types of DBP precursors. Also, Nitrosomonas and Pseudomonas were beneficial for ammonia removal.

关键词： Drinking water pre-treatment Micro-electrolysis Up-flow biological aerated filter Organic matter Disinfection by-product precursors

Simultaneous quantification of fifty-one odor-causing compounds in Drinking water using gas chromatography-triple quadrupole tandem mass spectrometry

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2019年第5期31卷 100-110页

作者： Chunmiao Wang Jianwei Yu Qingyuan Guo Yu Zhao Nan Cao Zhiyong Yu Min Yang Key Laboratory of Drinking Water Science and Technology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences University of Chinese Academy of Sciences College of Environmental Science & Engineering Yancheng Institute of Technology Beijing Waterworks Group

A wide range of compounds with various structural features can cause taste and odor(T&O)problems in Drinking water. It would be desirable to determine all of these compounds using a simple analytical method. In this paper, a sensitive method combining liquid–liquid extraction(LLE) with gas chromatography-triple quadrupole tandem mass spectrometry(GC–MS/MS)was established to simultaneously analyze 51 odor-causing compounds in Drinking water,including organic sulfides, aldehydes, benzenes, phenols, ethers, esters, ketones, nitrogenous heterocyclic compounds, 2-methylisoborneol and geosmin. Three deuterated analogs of target analytes, dimethyl disulfide-d6, benzaldehyde-d6 and o-cresol-3,4,5,6-d4,were used to correct the variations in recovery, and five isotope-labeled internal standards(4-chlorotoluene-d4, 1, 4-dichlorobenzene-d4, naphthalene-d8, acenaphthene-d10, phenanthrene-d10 respectively) were used prior to analysis to correct the variations arising from instrument fluctuations and injection errors. The calibration curves of the target compounds showed good linearity(R2> 0.99, level = 7),and method detection limits(MDLs) below 1/10 of the odor threshold concentrations were achieved for most of the odorants(0.10–20.55 ng/L). The average recoveries of most of the analytes in tap water samples were between 70% and 120%, and the method was reproducible(RSD Drinking water treatment plants(DWTPs) were analyzed by this method.According to the results, dimethyl trisulfide, dimethyl disulfide and indole were considered to be the key odorants responsible for the swampy/septic odor. 2-Methylisoborneol and geosmin were detected as the main odor-causing compounds for musty/earthy odor in DWTP B.

关键词： Odor-causing compounds Drinking water GC–MS/MS High-throughput detection

Quantitative Microbial Risk Assessment of Cryptosporidium and Giardia in Public Drinking Water in China

在线全文

学校读者我要写书评

暂无评论

Biomedical and Environmental Sciences 2021年第6期34卷 493-498页

作者： CAO Sheng Kui JIANG Yan Yan YUAN Zhong Ying YIN Jian Hai XU Meng XUE Jing Bo TANG Lin Hua SHEN Yu Juan CAO Jian Ping National Institute of Parasitic Diseases Chinese Center for Disease Control and Prevention(Chinese Center for Tropical Diseases Research)Shanghai 200025China NHC Key Laboratory of Parasite and Vector Biology Shanghai 200025China WHO Collaborating Centre for Tropical Diseases Shanghai 200025China National Center for International Research on Tropical Diseases Shanghai 200025China School of Global Health Chinese Center for Tropical Diseases ResearchShanghai Jiao Tong University School of MedicineShanghai 200025China

We aimed to assess the risks of Cryptosporidium and Giardia infections associated with Drinking water for local residents,based on a quantitative microbial risk assessment,in three densely populated regions of China.I... 详细信息

关键词： China. Drinking densely

Hydrogeochemical characteristics of groundwater and quality assessment for the purposes of Drinking and irrigation in Bougaa area,Northeastern Algeria

在线全文

学校读者我要写书评

暂无评论

Acta Geochimica 2020年第5期39卷 642-654页

作者： Riad Kouadra Abdeslam Demdoum Department of Geological Sciences University of Freres Mentouri Constantine 1ConstantineAlgeria Department of Earth Sciences Ferhat Abbas University Setif1SetifAlgeria

In the northern part of Algeria,the intensive exploitation of groundwater resources and pollution has considerably affected the aquifer water quality,especially in rural areas where groundwater is the main source of water supply for most uses.This study was performed to evaluate the groundwater quality and its suitability for Drinking and irrigation purposes through the hydrogeochemical study on the groundwater in Bougaa region(Northeastern Algeria).Fourteen groundwater samples were collected and analyzed for p H,T,EC,TDS,and major ions.Most samples are suitable for Drinking based on the permissible limits of the Bureau of Indian standards(Indian standard specification for Drinking water(IS 10500:2012),but only 35%of the samples are good enough for Drinking purposes based on the water quality index of the groundwater.Assessment of groundwater samples from various parameters and methods such as"Electrical conductivity,Sodium adsorption ratio,Soluble sodium percentage,Magnesium adsorption ratio,Residual sodium carbonate,Permeability index,Kelly’s ratio,Wilcox’s diagram,and US salinity laboratory classification"showed that groundwater in the area is chemically suitable for irrigation uses.The Piper trilinear diagram suggests that the groundwater mainly belongs to the hydrochemical facies Ca–Mg–Cl and Na–Cl.The combination of ionic ratios,Gibbs plots,and saturation indices show that water–rock interaction,particularly the dissolution of carbonate,evaporation minerals,and ion exchange processes affects hydrogeochemistry of the area.Additional processes such as evaporation and anthropogenic pollution from various sources can also have major impacts on groundwater salinity.

关键词： Groundwater Irrigation Drinking WQI Sodium adsorption ratio Wilcox’s diagram

Biofiltration and disinfection codetermine the bacterial antibiotic resistome in Drinking water:A review and meta-analysis

在线全文

学校读者我要写书评

暂无评论

Frontiers of Environmental Science & Engineering 2020年第1期14卷 23-34页

作者： Kun Wan Wenfang Lin Shuai Zhu Shenghua Zhang Xin Yu Key Laboratory of Urban Environment and Health.Institute of Urban Environment Chinese Academy of SciencesXiamen 361021China University of Chinese Academy of Sciences Beijing 100049China Beijing Guohuan Tsinghua Environmental Engineering Design&Research Institute Co. Ltd.Beijing 100084China

The bacterial antibiotic resistome(BAR)is one of the most serious contemporary medical challenges.The BAR problem in Drinking water is receiving growing attention.In this study,we focused on the distribution,changes,and health risks of the BAR throughout the Drinking water treatment system.We extracted the antibiotic resistance gene(ARG)data from recent publications and analyzed ARG profiles based on diversity,absolute abundance,and relative abundance.The absolute abundance of ARG was found to decrease with water treatment processes and was positively correlated with the abundance of 16S rRNA(r=0.963,/?Drinking water,membrane filtration technology and water boiling are recommended at the point of use.

关键词： Drinking water treatment Antibiotic resistance gene Biofiltration Chlorination

Betel quid chewing and oral potential malignant disorders and the impact of smoking and Drinking:A meta-analysis

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Clinical Cases 2022年第10期10卷 3131-3142页

作者： Hui-Jun Lin Xiao-Lei Wang Meng-Yuan Tian Xing-Li Li Hong-Zhuan Tan Department of Epidemiology and Health Statistics Xiangya School of Public HealthCentral South UniversityChangsha 410008Hunan ProvinceChina

BACKGROUND Oral potential malignant disorders(OPMDs)are a precancerous condition of oral disease.Several studies have found that betel quid chewing,smoking and alcohol Drinking might be the risk factors of OPMDs.But the relationships of them,especially their interaction are still inconclusive.AIM To evaluate the relationship between betel quid chewing and OPMDs and to explore the interaction of smoking and alcohol Drinking on the relationship.METHODS We searched Pub Med,Web of Science,Embase and the Cochrane Library databases with items complete until January 2021 for relevant studies.The research data were extracted according to the inclusion criteria.The pooled odds ratios(ORs)and 95%confidence intervals(CIs)were used to evaluate the effect size.Subgroup analysis was performed to assess interactions between exposures and OPMDs.Relative excess risk of interaction(RERI)was used to estimate the size of interaction.RESULTS Nine articles were selected in the final meta-analysis.The results showed that betel quid chewing(pooled OR:8.70,95%CI:5.18-14.61),alcohol consumption(pooled OR:1.95,95%CI:1.5-2.55),and smoking(pooled OR:4.35,95%CI:3.06-6.2)could significantly increase the risk of OPMDs compared to individuals without these behaviors.Smoking and alcohol Drinking synergistically increased the association between betel quid chewing and OPMDs(pooled OR;:14.38,95%CI:7.14-28.95;pooled OR;:11.12,95%CI:8.00-15.45,respectively).The RERI;and RERI;were 2.33 and 1.47,respectively.CONCLUSION The synergistic effects between smoking/Drinking and betel quid highlights the importance of focusing on individuals with multiple exposures.Further study should be conducted to confirm these interactions.

关键词： Oral potential malignant disorders Betel quid chewing Smoking Drinking Synergistic effect

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

喝茶可能会让你更长寿

疯狂英语（新读写） 2023年第6期 50-53,77,78页

作者：赖妍江西

主题语境:饮食与健康篇幅:285词关键词:life,tea ~1 Tea may lead to a healthier and longer life.That’s according to a recent Chinese study.Chinese researchers found that Drinking tea over a long period of time—especially green tea—had associated health benefits.The benefits were more obvious among men,according to the study published in the European Journal of Preventive Cardiology.

关键词： benefits Drinking longer