【摘要】 目的了解湟水河西宁段水污染的状况。方法于2011年平水期(8月)、枯水期(10月)和丰水期(5月),采集湟水河西宁段的11个监测断面的水样,测定总硬度、氨氮、化学需氧量(COD)、六价铬、pH值、电导率,并采用单因子污染指数法进行评价。结果湟水河西宁段水样中六价铬、pH值、COD均达到GB 3838—2002《地表水环境质量标准》中Ⅲ类标准,氨氮、总硬度、电导率的平均值分别为7.10 mg/L,47.4 mg/L,0.68×103μS/cm。结论湟水河西宁段水样中氨氮、总硬度、电导率存在不同程度的超标状况。更多还原

【Abstract】 Objective To know the contamination of Xining reach of the Huangshui River and to do the dynamic analysis in order to provide a theoretical basis for the water contamination control of the Huangshui River.Methods Based on monitoring water quality in time and space distribution of six indicators in 11 monitoring sections in the flat seasons(August),the dry seasons(October) and the wet seasons(May) in Xining reach of the Huangshui River in 2011,the water contamination was evaluated by contamination index of the evaluation factors.Results Characteristics of water contamination were as follows : ammonia nitrogen average was 7.10 mg/L,total hardness average was 47.4 mg/L,conductivity average was 0.68×103 μS/cm.Conclusion According to Surface Water Environmental Quality Standards(GB 3838-2002),class Ⅲ,ammonia-nitrogen,total hardness and conductivity of water samples collected from Xining reach of Huangshui River are disqualified in degrees.更多还原