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Quality and management status of the drinking water supplies in a semiarid region of Northeastern Brazil.
Journal of Environmental Science and Health, Part A ( IF 2.1 ) Pub Date : 2020-06-22 , DOI: 10.1080/10934529.2020.1782668
Lino Valcarcel Rojas 1 , José Araujo Santos Junior 1 , José A Corcho-Alvarado 2 , Romilton Santos Amaral 1 , Stefan Röllin 2 , Marvic Ortueta Milan 1 , Zahily Herrero Fernández 1 , Kennedy Francis 1 , Marianna Cavalcanti 1 , Josineide M N Santos 1
Affiliation  

Surface and groundwater resources in the Seridó Region (Brazilian semiarid) were investigated to evaluate their current quality conditions and suitability for domestic use. The water was characterized in terms of physical, chemical, and radiological parameters; including those required by the Brazilian Drinking Water Quality Standard (DWQS). Information about major and trace elements and radiological aspects of the water are reported for the first time. Salinization was confirmed as a key problem in the region, driven natural and anthropogenic. Overall, water has poor organoleptic characteristics. The concentration of most trace elements was below the recommended level, except for uranium and selenium in groundwater. Gross alpha and beta activities higher than the recommended levels were also recorded in several water samples, mostly from the investigated aquifers. In these samples, a detailed radionuclide analysis is required to estimate the effective dose received by the local population. Overall, the results show that water from the investigated region is not suitable for human consumption unless proper treatment is applied. Water requires proper treatment to decrease the content of dissolved salts, toxic elements, and radionuclides responsible for the high gross alpha and beta activities.



中文翻译:

巴西东北部半干旱地区饮用水的质量和管理状况。

对塞里多地区(巴西半干旱地区)的地表和地下水资源进行了调查,以评估其当前的质量状况和家庭使用的适用性。根据物理,化学和放射学参数对水进行了表征。包括巴西饮用水水质标准(DWQS)所要求的。首次报告了有关水的主要和微量元素以及放射学方面的信息。盐碱化被确认为该地区的关键问题,是自然和人为驱动的。总体而言,水的感官特性较差。除地下水中的铀和硒外,大多数痕量元素的浓度均低于建议水平。在一些水样中还记录到高于建议水平的总α和β活度,主要来自调查的含水层。在这些样品中,需要进行详细的放射性核素分析以估算当地人群所接受的有效剂量。总体而言,结果表明,除非进行适当的处​​理,否则来自所调查区域的水不适合人类食用。水需要适当的处理,以减少造成高总α和β活性的溶解盐,有毒元素和放射性核素的含量。

更新日期:2020-06-22
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