United Nations University, Institute for Environment and Human Security, Hermann-Ehlers-Strasse 10, 53113 Bonn, Germany.
Environ Pollut. 2013 Nov;182:225-32. doi: 10.1016/j.envpol.2013.07.019. Epub 2013 Aug 7.
The objective of this study was to assess the quality of harvested rainwater in the Mekong Delta (MD), Vietnam for local (roof types, storage system and duration) and spatial (proximity of industry, main roads, coastline) conditions. 78 harvested rainwater samples were collected in the MD and analyzed for pH, turbidity, TDS, COD, nutrients (NH4, NO3, NO2, o-PO4), trace metals and coliforms. The results show that thatch roofs lead to an increase of pollutants like COD (max 23.2 mgl(-1)) and turbidity (max 10.1 mgl(-1)) whereas galvanized roofs lead to an increase of Zn (max 2.2 mgl(-1)). The other local and spatial parameters had no or only minor influence on the quality of household harvested rainwater. However, lead (Pb) (max. 16.9 μgl(-1)) and total coliforms (max. 102 500 CFU100 ml(-1)) were recorded at high concentrations, probably due to a variety of household-specific conditions such as rainwater storage, collection and handling practices.
本研究旨在评估越南湄公河三角洲（MD）地区雨水收集的水质，考虑了当地（屋顶类型、储存系统和持续时间）和空间（工业、主要道路、海岸线的接近程度）条件。在 MD 地区采集了 78 个雨水收集样本，并对其 pH 值、浊度、总溶解固体（TDS）、化学需氧量（COD）、营养物质（NH4、NO3、NO2、o-PO4）、痕量金属和大肠菌群进行了分析。结果表明，茅草屋顶会导致 COD（最高 23.2 mgl(-1)) 和浊度（最高 10.1 mgl(-1)) 的增加，而镀锌屋顶会导致 Zn（最高 2.2 mgl(-1)) 的增加。其他当地和空间参数对家庭雨水收集的水质没有或只有轻微影响。然而，在高浓度下记录到了 Pb（最高 16.9 μgl(-1)) 和总大肠菌群（最高 102 500 CFU100 ml(-1))，这可能是由于雨水储存、收集和处理等各种家庭特定条件造成的。
