2016年北京城区生活饮用水34种元素水平
发布时间：2019-08-24 07:17
【摘要】：目的了解北京市城区生活饮用水中34种元素的水平。方法于2016年9月15日—20日在北京市四个方向的城区随机选取92户家庭,采集自来水以及其中24户家庭的净水设备出水,检测并评价其中饮用水标准中规定有标准限值的17种元素。结果除了个别家庭自来水中铁和汞元素超出限值外,其余家庭的17项元素指标均符合《生活饮用水卫生标准》的要求。一次供水18种元素检出率为3.1%~63.1%,16种稀土元素的检出率为47.6%~100%;二次供水18种元素检出率为3.7%~63.0%,16种稀土元素的检出率48.9%~100%;净水设备出水18种元素检出率为4.2%~75.0%。净水设备出水和二次供水中的银元素浓度明显高于一次供水(F_(Ag)=4.21,P0.05),其余33种元素在不同供水方式的饮用水样中没有明显差异。硒、镍和铁三种元素浓度在城区四个不同地理方位的市政供水样品中存在差异(F_(Se)=3.64,P0.05;F_(Ni)=3.38,P0.05;F_(Fe)=3.83,P0.05)。结论 2016年北京市城区提供给居民一次供水和二次供水的饮用水水质是有保证的。
[Abstract]:Objective to investigate the level of 34 elements in drinking water in urban areas of Beijing. Methods from September 15 to 20, 2016, 92 families were randomly selected in four directions of Beijing. Tap water and the effluent of water purification equipment from 24 of them were collected, and 17 elements with standard limits in drinking water standard were detected and evaluated. Results except for iron and mercury in tap water of individual households, the 17 elements of other households met the requirements of Sanitary Standard for drinking Water. The detection rate of 18 elements in primary water supply was 3.1% 鈮，
本文编号：2528783
[Abstract]:Objective to investigate the level of 34 elements in drinking water in urban areas of Beijing. Methods from September 15 to 20, 2016, 92 families were randomly selected in four directions of Beijing. Tap water and the effluent of water purification equipment from 24 of them were collected, and 17 elements with standard limits in drinking water standard were detected and evaluated. Results except for iron and mercury in tap water of individual households, the 17 elements of other households met the requirements of Sanitary Standard for drinking Water. The detection rate of 18 elements in primary water supply was 3.1% 鈮，
本文编号：2528783
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