Department of Civil and Resource Engineering , Dalhousie University , Halifax , Nova Scotia B3H 4R2 , Canada.
Community of Pond Inlet , Pond Inlet , Nunavut X0A 0S0 , Canada.
Environ Sci Technol. 2020 Feb 18;54(4):2192-2201. doi: 10.1021/acs.est.9b04691. Epub 2020 Jan 31.
Access to clean and safe drinking water is a perpetual concern in Arctic communities because of challenging climatic conditions, limited options for the transportation of equipment and process chemicals, and the ongoing effects of colonialism. Water samples were gathered from multiple locations in a decentralized trucked drinking water system in Nunavut, Canada, over the course of one year. The results indicate that point of use drinking water quality was impacted by conditions in the source water and in individual buildings and strongly suggest that lead and copper measured at the tap were related to corrosion of onsite premise plumbing components. Humic-like substances were the dominant organic fraction in all samples, as determined by regional integration of fluorescence data. Iron and manganese levels in the source water and throughout the water system were higher in the winter and lower in the summer months. Elevated concentrations of copper (>2000 μg L) and lead (>5 μg L) were detected in tap water from some buildings. Field flow fractionation coupled with inductively coupled plasma mass spectrometry and ultraviolet-visible spectrometry was used to demonstrate the link between source water characteristics (high organics, iron and manganese) and lead and copper in point of use drinking water.
在北极社区，由于恶劣的气候条件、设备和处理化学品运输方式有限，以及殖民主义的持续影响，获取清洁和安全的饮用水一直是人们关注的问题。在加拿大努纳武特的一个分散式卡车饮用水系统中，在一年的时间里从多个地点采集了水样。结果表明，使用点饮用水水质受到水源和个别建筑物条件的影响，并强烈表明在水龙头处测量的铅和铜与现场前提管道部件的腐蚀有关。根据荧光数据的区域综合，腐殖酸样物质是所有样品中的主要有机部分。水源和整个水系统中的铁和锰含量在冬季较高，在夏季较低。一些建筑物的自来水龙头水中检测到铜（>2000μg/L）和铅（>5μg/L）浓度升高。场流分级结合电感耦合等离子体质谱和紫外-可见光谱法证明了水源特性（高有机物、铁和锰）与使用点饮用水中铅和铜之间的联系。
