Towards a rational strategy for monitoring of microbiological quality of ambient waters.
Towards a rational strategy for monitoring of microbiological quality of ambient waters.
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DOI：
10.1016/j.scitotenv.2012.06.019
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发表时间：
2012-09-01
影响因子：
9.8
通讯作者：
Beatriz Rajal, Veronica
中科院分区：
文献类型：
--
作者：
Ramiro Poma, Hugo;Gutierrez Cacciabue, Dolores;Garce, Beatriz;Emilio Gonzo, Elio;Beatriz Rajal, Veronica
水是人类接触微生物危害的主要来源之一。虽然立法规定了粪便指示细菌的监管标准，以评估水的微生物质量，但这些标准并不一定能预测寄生虫和病毒等病原体的存在。需要更好的监测和管理战略，以评估病原体水传播的风险。我们建立了一个基线数据集来描述河流水质，确定随时间的变化，并设计一个合理的监测策略。从一个为期一年的每月监测活动的污染阿雷纳莱斯河（阿根廷）的数据进行了分析，统计相关的理化和微生物变量，水质的季节性和纵向变化，并确定研究地点之间的相似性。测量的变量（16）反映了通过城市的河流质量恶化。发现的不同病毒和寄生虫与总大肠菌群和耐热大肠菌群的浓度无关。温度、浊度、电导率、溶解氧、肠球菌和诺如病毒存在明显的季节变化。一些变量之间的强相关性被发现，我们选择了8个变量（溶解氧，电导率，浊度，总和耐热大肠菌群，肠球菌，腺病毒和微孢子虫作为病毒和寄生虫学指标，分别）为今后的监测。监测点之间存在相似性，通过同表相关和判别分析将其分为4类。这使我们能够减少网站的数量，从11个减少到5个。67%的总方差和变量之间的相关结构解释使用五个主成分。所有这些分析导致了一个新的长期系统的监测计划，一个合理的监测战略的基础上选择最合适的监测点和最重要的变量来测量，将导致有限的资源得到最佳利用，以充分保护公众和环境健康。
Water is one of the main sources of human exposure to microbiological hazards. Although legislation establishes regulatory standards in terms of fecal indicator bacteria to assess the microbiological quality of water, these do not necessarily predict the presence of pathogens such as parasites and viruses. Better surveillance and management strategies are needed to assess the risk of pathogens waterborne transmission. We established a baseline dataset to characterize river water quality, identify changes over time, and design a rational monitoring strategy. Data from a year-long monthly monitoring campaign of the polluted Arenales River (Argentina), were analyzed to statistically correlate physicochemical and microbiological variables, the seasonal and longitudinal variation of the water quality and determine the similarity between study sites. The measured variables (sixteen) reflected the deterioration in the river quality through the city. Different viruses and parasites found did not correlate with the concentration of total and thermotolerant coliforms. There was significant seasonal variation for temperature, turbidity, conductivity, dissolved oxygen, enterococci, and norovirus. Strong correlations between some variables were found; we selected eight variables (dissolved oxygen, conductivity, turbidity, total and thermotolerant coliforms, Enterococcus, and adenovirus and Microsporidium as viral and parasitological indicators, respectively) for future monitoring. There was similarity between the monitoring locations, which were grouped into four clusters validated by cophenetic correlation and supported by discriminant analysis. This allowed us to reduce the number of sites, from eleven down to five. Sixty seven percent of the total variance and the correlation structure between variables was explained using five principal components. All these analyses led to a new long-term systematic monitoring scheme A rational monitoring strategy based on the selection of the most suitable monitoring points and of the most significant variables to measure, will result in optimal use of the limited resources available to adequately protect public and environmental health.
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影响因子：
2
作者：
Ben Ayed, L.;Schijven, J.;Sabbahi, S.
通讯作者：
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Buffet-Janvresse, C
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通讯作者：
De Los Angeles, BM
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Crainic, R