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Importance and vulnerability of lakes and reservoirs supporting drinking water in China

Fundamental Research 2023年第2期3卷 265-273页

作者： Yunlin Zhang Jianming Deng Boqiang Qin Guangwei Zhu Yinjun Zhang Erik Jeppesen Yindong Tong State Key Laboratory of Lake Science and Environment Nanjing Institute of Geography and LimnologyChinese Academy of SciencesNanjing 210008China China National Environmental Monitoring Centre 8(B)Dayangfang Beiyuan RoadChaoyang DistrictBeijing 100012China Department of Ecoscience and Arctic Research Centre Aarhus University8600SilkeborgDenmark Sino-Danish Centre for Education and Research Chinese Academy of SciencesBeijing 100101China Limnology Laboratory Department of Biological Sciences and Centre for Ecosystem Research and ImplementationMiddle East Technical UniversityAnkara 06800Turkey Institute of Marine Sciences Middle East Technical UniversityErdemli-Mersin 33731Turkey School of Environmental Science and Engineering Tianjin UniversityTianjin 300072China

drinking water is closely related to human health,disease and mortality,and contaminated drinking water causes 485,000 deaths from diarrhea each year *** has been facing increasingly severe water scarcity due to both water shortages and poor water *** safe and clean drinking water is a great challenge and top priority,especially for China with 1.4 billion *** China,more than 4000 centralized drinking water sources including rivers,lakes and reservoirs,and groundwater have been established to serve urban ***,there is little knowledge on the percentage,serving population and water quality of three centralized drinking water source *** collected nationwide centralized drinking water sources data and serving population data covering 395 prefecture-level and county-level cities and water quality data in the two most populous provinces(Guangdong and Shandong)to examine their contribution and ***,the drinking water source types can be classified into three clear regions exhibiting apparent differences in the respective contributions of rivers,lakes and reservoirs,and *** further found that overall,lakes and reservoirs account for 40.6%of the centralized drinking water sources ***(30.8%)and groundwater(28.6%)in *** and reservoirs are particularly important in the densely populated eastern region,where they are used as drinking water sources by 51.0%of the population(318 million).Moreover,the contribution to the drinking water supply from lakes and reservoirs is increasing due to their better water quality and many cross-regional water transfer *** results will be useful for the government to improve and optimize the establishment of centralized drinking water sources,which provide safe and clean drinking water in China to safeguard people's lives and health and realize sustainable development goals.

关键词： Centralized drinking water source drinking water safety Lakes and reservoirs Population water quality

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Evaluation of different primers of the 18S rRNA gene to profile amoeba communities in environmental samples

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water Biology and Security 2022年第3期1卷 56-66页

作者： Xiafei Zheng Zhili He Cheng Wang Qingyun Yan Longfei Shu Environmental Microbiomics Research Center School of Environmental Science and EngineeringSouthern Marine Science and Engineering Guangdong Laboratory(Zhuhai)Sun Yat-sen UniversityGuangzhou510006China Ninghai Institute of Mariculture Breeding and Seed Industry Zhejiang Wanli UniversityNingbo315100China

Amoeboid protists,an assemblage of organisms belonging to different phylogenetic lineages,have drawn increasing attention due to their crucial ecological roles in various environments and their potential health ***,18S rRNA gene sequencing is widely applied for the detection of ***,it is not clear which is the best primer pair for 18S rRNA gene amplification in *** study compared the four most commonly used primer pairs for revealing the diversity,composition,core species,and community assembly processes of amoebae in water and *** found that the choice of primers artificially influences the detection of community composition of *** also found that short-read fragments may lead to mismatches in taxonomy and were not suitable for phylogenetic *** contrast,full-length primers could detect the highest number of amoeba lineages and annotate 80%of reads belonging to amoebae to known ***,full-length primers did not detect as many amoeba species as V4 ***,we showed that beta diversity and community assembly determination were largely unaffected by primer choice,but different primers could influence our interpretations of the ecological process underlying stochasticity and *** study indicates that full-length read sequencing and V4 region Illumina sequencing are suitable for profiling amoeba diversity in the environment.

关键词： Amoeba community Diversity drinking water safety Metagenomics 18S rRNA gene Protist

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Integrated Control of Agricultural Non-point Source Pollution to Provide Safe and Healthy drinking water for Rural Areas

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Asian Agricultural Research 2017年第9期9卷 28-30,35页

作者： Qi LIANG Zhen ZHANG Yongxian LIU Jinghao DAI Ziju JIANG Liping PAN Shiyang LU Xiu LAN College of Agriculture Guangxi University College of Accounting and Auditing Guangxi University of Finance and Economics Institute of Agricultural Resource and Environment Guangxi Academy of Agricultural Sciences

Agricultural non-point source pollution has become the main part of water pollution prevention and control in China. This paper made a brief introduction to the causes and hazards of agricultural non-point source pollution and the current situation of agricultural non-point source pollution prevention and control in China. In view of the serious agricultural non-point source pollution in water environment of Guangxi and the difference in quality of drinking water between urban and rural areas,it came up with recommendations for strengthening agricultural non-point source pollution prevention and control from scientific distribution,linked operation and maintenance,popular science education,and legal system construction,to guarantee safe and healthy drinking water in rural areas.

关键词： Non-point source pollution Agriculture water environment drinking water safety

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质谱在饮用水的研究（英文）

质谱在饮用水的研究（英文）

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第三届全国质谱分析学术报告会

作者： Guang Huang Ping Jiang Lindsay Jmaiff Blackstock Xing-Fang Li Division of Analytical and Environmental Toxicology University of Alberta

Surface water contains dissolved organic nitrogen. The majority（＜10 kDa） of nitrogenous compounds, like peptides, survive water treatment processes. Peptides could react with disinfectants to form complex halogenated peptides during water disinfection. Little is known about halogenated peptides in drinking water. We report the approaches for identification of various chloro-peptides and their precursors in drinking water using complementary mass spectrometry techniques. First to identify precursor peptides in source water, we developed a novel high throughput analysis strategy. The method integrates three parallel solid phase extractions（SPE） and two complementary high performance liquid chromatography（HPLC） separations with non-target identification using precursor ion exclusion（PIE）-high resolution mass spectrometry. Next, we identified N-chlorinated peptides in model solution and drinking water using high-resolution mass spectrometry（HRMS）, HRMS/MS and HPLC-MS/MS with multiple reaction monitoring（MRM） mode. Finally to evaluate stability and quantify the occurrence of identified N-halogenated peptides in drinking water, we used HPLC-MS/MS with multiple reaction monitoring（MRM） mode. Using three complimentary SPE cartridges maximized the extraction efficiency of organic compounds from authentic water samples. The complementary HPLC techniques improved the retention and separation of various compounds of different hydrophobicity. With advanced PIE capabilities we were able to identify peptides at trace levels. Using the non-target strategy, we detected 625 peptides and 617 peptides respectively in source and finished water samples, which were collected from a full-scale drinking water treatment plant. Of these, 124 unique peptides were detected exclusively in source water. We chose 10 peptides and tested their potential to form halogenated peptides during disinfection in both model solution and authentic water samples. Using LCMS/MS-MRM we found that different halog

关键词： targeted and nontargeted MS analysis disinfection byproducts drinking water safety

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Comprehensive Control of Ecological Environment in water Sources

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Meteorological and Environmental Research 2023年第3期14卷 73-77页

作者： Jiarong ZHANG Shuang WANG Tengfei XU Shaanxi Provincial Key Laboratory of Comprehensive Utilization of Tailings Resources Shangluo UniversityShangluo 726000China

To scientifically and effectively conduct comprehensive control of water sources to achieve water safety,the importance,main steps and plan of comprehensive control of ecological environment in water sources were analyzed on the basis of analyzing the development and protection process of foreign water *** results show that for the comprehensive control of water sources,it is needed to pay attention to the accurate grasp of the current environmental quality of water sources and carefully analyze the problems in the ecological environment of water ***,it is necessary to ensure the water quality and quantity of sources,focus on the implementation of environmental remediation and ecological restoration,implement regional protection of water sources,and combine engineering and non-engineering measures to take comprehensive control of environmental problems.

关键词： drinking water safety Non-engineering measures Engineering measures Comprehensive control

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