鸭绿江中上游水域水质理化特征分析

目的通过对鸭绿江中上游水的监测、分析、统计、评价,研究该水域水质理化特征和季节变化动态。方法按环境保护总局HJ/T 52-1999《水质河流采样技术指导》采集水样,按GB/T 5750-2006《生活饮用水标准检验方法》进行检测。结果鸭绿江水域基本处于良好状态,pH值在7.0~8.11之间,水质略偏碱性。硝酸盐氮含量差异较大,三道沟含量最高(平均2.10 mg/L),砬子河最低(平均0.28 mg/L)。结论该水属钙型软水,经净化消毒处理后,可以作为人类生活饮用水水源及珍稀水生生物栖息地。

Physical and Chemical Characteristics of Water in the Middle and Upper Reaches of Yalu River

Objective To study the physical and chemical characteristics of water quality in the middle and upper reaches of Yalu River and its seasonal dynamics.Methods Based on HJ/T 52-1999 Water Quality-Guidance on Sampling Techniques of Rivers,and GB/T 5750-2006 Standard Examination Methods for Drinking Water,water samples were collected and detected.Results The water of Yalu River was basically in good condition,pH value was 7.0-8.11.Nitrate nitrogen content had large differences in La ditch county（the average content of 2.10 mg / L） and Wei Shahe county（the average content of 0.28 mg / L）.Conclusion The water in the middle and upper reaches of Yalu River is calcium-based soft water.After purification and disinfection treatment,it can be used as source of drinking water and habitat for rare aquatic animals.