论文部分内容阅读
为了解北京市城区生活饮用水中17种金属元素的水平,于2015年4月15—20日,在北京市四个方向的城区随机选取96户家庭,采集生活饮用水并检测砷、镉、铅、汞、硒、铝、铁、锰、铜、锌、锑、钡、铍、钼、镍、银和铊17种金属元素的浓度。结果显示,共采集120件水样,除了2件水样铁超标、2件水样汞超标外,其余116件水样中17项金属指标均合格。仅净水设备出水和二次供水中的银浓度高于一次供水中银的浓度,差异有统计学意义(P<0.05)。提示北京市城区一次供水和二次供水的饮用水水质较好。
In order to understand the levels of 17 kinds of metal elements in urban drinking water in Beijing, from April 15 to April 20, 2015, 96 families were randomly selected in urban areas in the four directions of Beijing to collect drinking water and detect arsenic, cadmium, Lead, mercury, selenium, aluminum, iron, manganese, copper, zinc, antimony, barium, beryllium, molybdenum, nickel, silver and thallium concentrations of 17 kinds of metal elements. The results showed that a total of 120 water samples were collected. Except for 2 samples of iron exceeding the standard, and 2 samples of mercury exceeding the standard, the remaining 11 samples of 116 samples were qualified. Only pure water equipment and secondary water supply in the silver concentration is higher than the concentration of silver in one water supply, the difference was statistically significant (P <0.05). Prompted a city of Beijing water supply and secondary water supply of drinking water better quality.