Ramos Marcio Antonio Gomes, de Oliveira Eduardo Schneider Bueno, Pião Antonio Carlos Simões, Leite Dilza Aparecida Nalin de Oliveira, de Angelis Dejanira de Franceschi
Department of Biochemistry and Microbiology, Institute of Biosciences, Universidade Estadual Paulista Júlio de Mesquita Filho UNESP, Avenida 24A, 1515-Bela Vista, CEP 13506-900, Rio Claro, SP, Brazil.
Department of Biostatistics, Institute of Biosciences, UNESP/Rubião Junior, Botucatu, SP, Brazil.
Environ Monit Assess. 2016 May;188(5):263. doi: 10.1007/s10661-016-5261-z. Epub 2016 Apr 1.
Due to the concern with the quality of hydric resources, the monitoring is essential to evaluate and identify the anthropogenic and environmental interferences in a quantitative and qualitative level. In order to assist the interpretation of the water status of hydric bodies, the gathering of analytical data often considers the Water Quality Index (WQI). This index transforms technical information in description of the water quality status, highlighting the effectiveness of its use and guiding the decision-making process when necessary. The aim of this research is to assess the water quality of a region in São Paulo State, Brazil, by means of the WQI of Jaguari and Atibaia Rivers. The period of intense drought, which affected the Brazilian southeast in 2014, was evaluated and compared to the mean values recorded from October 2009 to March 2015, correlating the values of Escherichia coli and the biochemical oxygen demand (BOD). One hundred nine samples were collected, being 53 from dry seasons, between October and March, and 56 from rainy seasons, between April and September. The WQIs in Jaguari and Atibaia Rivers, during dry season, were of 42.2 (medium) and 36.7 (bad), respectively. The same pattern was registered for the dry season, for both rivers, with indices values of 40.1 for Jaguari River (medium) and 34.9 for Atibaia River (bad). This research presented the need of an effective evaluation of the environmental quality and preservation by competent organs for both rivers. Due to the detected conditions, special attention should be given to the Atibaia River.
由于对水资源质量的关注，监测对于在定量和定性层面评估和识别人为及环境干扰至关重要。为了辅助解读水体的水状况，分析数据的收集通常会考虑水质指数（WQI）。该指数将技术信息转化为水质状况的描述，突出了其使用的有效性，并在必要时指导决策过程。本研究的目的是通过雅瓜里河和阿蒂巴亚河的水质指数评估巴西圣保罗州一个地区的水质。对2014年影响巴西东南部的严重干旱时期进行了评估，并与2009年10月至2015年3月记录的平均值进行比较，将大肠杆菌值与生化需氧量（BOD）相关联。共采集了109个样本，其中53个来自10月至3月的旱季，56个来自4月至9月 的雨季。雅瓜里河和阿蒂巴亚河在旱季的水质指数分别为42.2（中等）和36.7（差）。两条河流在旱季也呈现相同模式，雅瓜里河指数值为40.1（中等），阿蒂巴亚河为34.9（差）。本研究表明，主管机构需要对两条河流的环境质量和保护进行有效评估。鉴于检测到的状况，应特别关注阿蒂巴亚河。
