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首页> 外文期刊>International Journal of Environmental Research and Public Health >Lead, Zinc, Copper, and Cadmium Content of Water from South Australian Rainwater Tanks
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Lead, Zinc, Copper, and Cadmium Content of Water from South Australian Rainwater Tanks

机译：南澳大利亚雨水箱中水的铅，锌，铜和镉含量

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Rainwater is consumed for drinking water in many parts of Australia, either preferentially over municipal water or in regional or remote areas, because rainwater is the primary source of water. Previous rainwater studies in other areas in Australia have shown the levels of some metals to be above the Australian Drinking Water Guidelines (ADWG). This study assessed the level of metals in rainwater harvested in the Adelaide region. Water samples were collected from 53 tanks from three different sampling corridors. A total of 365 water samples were analysed for lead, zinc, copper, and cadmium using atomic absorption spectrophotometry. In 47 out of the 53 tanks, lead was above the ADWG of 0.01 ppm in at least one sample (with 180/365 samples above 0.01 ppm). Zinc was above the ADWG (3.0 ppm) in 53/365 samples, copper was above the ADWG (2.0 ppm) in eight samples out of 365 samples, and cadmium was above the ADWG (0.002 ppm) in 19 samples out of 365 samples. These data are consistent with other studies of rainwater quality in Australia. Comparisons of levels of metals and volume of rainfall in the sampling and preceding month, roof material, and tank material, the presence of a first-flush device, sampling corridor, and sample pH showed that the roof material was related to higher levels of metals. There was a significant relationship between sampling corridors and the levels of lead and zinc. Nine of the tanks surveyed had filters installed. There was a small, but statistically significant, decrease in the levels of metals that passed through a filter prior to collection but, in those samples, filters did not remove metals to below guideline concentrations. An estimate of exposure, and a brief discussion of health risks as a result of exposure to metals, is presented.
机译：在澳大利亚许多地区，雨水被用作饮用水，优先于市政水或区域或偏远地区，因为雨水是水的主要来源。之前在澳大利亚其他地区进行的雨水研究表明，某些金属的含量高于《澳大利亚饮用水准则》（ADWG）。这项研究评估了阿德莱德地区收集的雨水中金属的含量。从三个不同采样通道的53个水箱中收集了水样。使用原子吸收分光光度法对总共365个水样品中的铅，锌，铜和镉进行了分析。在53个储罐中的47个储罐中，铅在至少一个样品中的ADWG高于0.01 ppm（180/365个样品中的0.01 ppm以上）。在365个样品中，锌在53/365个样品中均高于ADWG（3.0 ppm），铜在365个样品中的八个样品中均高于ADWG（2.0 ppm），镉在365个样品中的19个样品中均高于ADWG（0.002 ppm）。这些数据与澳大利亚对雨水质量的其他研究一致。比较采样和前一个月的金属水平和降雨量，屋顶材料和储罐材料，是否有第一冲洗装置，采样通道和样品pH值，表明屋顶材料与较高的金属水平有关。采样通道与铅和锌的含量之间存在显着的关系。被调查的坦克中有9个安装了过滤器。收集前通过过滤器的金属含量有少量但统计上显着的下降，但在这些样品中，过滤器并未将金属去除至低于指导浓度。介绍了接触估计，并简要讨论了由于接触金属而导致的健康风险。

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