Quantification of Elemental Contaminants in Unregulated Water across Western Navajo Nation
Quantification of Elemental Contaminants in Unregulated Water across Western Navajo Nation
复制标题
DOI：
10.3390/ijerph16152727
复制
发表时间：
2019-08-01
影响因子：
--
通讯作者：
Ingram, Jani C.
中科院分区：
文献类型：
--
作者：
Credo, Jonathan;Torkelson, Jaclyn;Ingram, Jani C.
美国西部的地质概况使地下水中砷和铀的含量自然升高，采矿企业可能使情况恶化。纳瓦霍族位于美国西南部，是最大的美洲原住民民族，拥有超过100年的硬岩开采遗产。这项研究有两个目标，量化纳瓦霍民族亚利桑那州和犹他州一侧与新墨西哥州一侧相比，水系统中的砷和铀浓度，并确定是否有其他值得关注的因素。2014年至2017年期间，在纳瓦霍民族的亚利桑那州和犹他州一侧收集了294个水样，并分析了21种元素。其中，14种元素至少有一次浓度超过了国家规定的限度，其中6种（V、Ca、As、Mn、Li和U）的超标率最高，受到纳瓦霍族各社区的关注。我们的研究结果与亚利桑那州和纳瓦霍族进行的其他研究相似，并表明除了砷和铀之外，其他元素可能对公共健康造成影响。
The geologic profile of the western United States lends itself to naturally elevated levels of arsenic and uranium in groundwater and can be exacerbated by mining enterprises. The Navajo Nation, located in the American Southwest, is the largest contiguous Native American Nation and has over a 100-year legacy of hard rock mining. This study has two objectives, quantify the arsenic and uranium concentrations in water systems in the Arizona and Utah side of the Navajo Nation compared to the New Mexico side and to determine if there are other elements of concern. Between 2014 and 2017, 294 water samples were collected across the Arizona and Utah side of the Navajo Nation and analyzed for 21 elements. Of these, 14 elements had at least one instance of a concentration greater than a national regulatory limit, and six of these (V, Ca, As, Mn, Li, and U) had the highest incidence of exceedances and were of concern to various communities on the Navajo Nation. Our findings are similar to other studies conducted in Arizona and on the Navajo Nation and demonstrate that other elements may be a concern for public health beyond arsenic and uranium.