摘要
2004年8月,测定了海水、黄河水、小清河水、雨水、地下水以及17种瓶装矿泉水、9种瓶装纯净水和北京市、青岛市自来水中的“三氮”(NH4+-N、NO2--N、NO3--N)、无机磷、pH、DO等,发现天然水中NO3--N过高,水体氮负荷增加,N/P最高达697,雨水pH最低为3.98,部分矿泉水NO3--N比青岛市自来水还高,北京市自来水的NO3--N高达8.53mg/L,为所测饮用水之首。
The ＂three nitrogen＂ （NH4^＋- N, NO2^--N, NO3^--N）, inorganic phosphorus, pH value and dissolved oxygen of several kinds of waters had been measured at August, 2004. The water contained sea water, the Yellow River water, the Xiaoqing River water, rainwater, groundwater, and seventeen kinds of bottling mineral waters, nine kinds of pure waters, tap water from Beijing and Qingdao. It was found that the contents of nitrates were exceeding the acceptable levelsin natural water. The highest ratio of nitrogen to phosphorus was 697 among the waters of study. The lowest pH of rainwaters was 3.98. The content of nitrate in some kinds of bottling mineral waters was higher than the Qingdao tap water standard. The contents of NO^3--N of Beijing tap water was as high as 8.53 mg/L, the highest in the drinking waters studied.
出处
《环境污染与防治》
CAS
CSCD
北大核心
2007年第1期63-66,共4页
Environmental Pollution & Control
基金
国家自然科学基金重点资助项目(No.30530080)
国家"973"计划资助项目(No.2002CB412402)
中国科学院重大资助项目(No.KJCX315W-215)。
关键词
水质
硝酸根
亚硝酸根
磷
Water quality Nitrate Nitrite Phosphorus
