三江源黄河地表水水环境现状评价

目的]监测与评价三江源黄河地表水质量状况,为三江源的保护与开发提供理论依据。方法]以三江源黄河地表水为研究对象,通过水质监测,对三江源黄河地表水进行水环境评价,并对该地区的生态及环境保护提出几点建议。结果]监测与评价结果表明,三江源黄河地表水的质量状况如下：水温10．7℃,pH8．05,高锰酸盐指数1．54mg／L,化学需氧量COD8．19mg／L,生化需氧量BOD5 2mg／L,氨氯0．139mg／L,氟化物0．163mg／L,硫化物0．02mg／L,总磷0．03mg／L,铬（六价）0．004mg／L,挥发酚0．002mg／L,总汞0．00001mg／L,石油类0．02mg／L,粪大肠恩斯特群〈20个／L。结论]三江源黄河地表水水质均未超过于《地表水环境质量标准》（GB3838-2002）的Ⅰ类标准．水体未受到污染,水质良好。

Assessment on Water Environment Status of Surface Water in Yellow River of Three River Sources

Objective] The aim was to monitor and evaluate the quality situation of the surface water of Yellow River of Three River Sources and provide the theoretical basis for the protection and development in area of Three River Sources.Method] With the surface water in Yellow River of Three River Sources as the tested object,the water environment of the surface water in Yellow River of Three River Sources was evaluated through the water quality monitoring and some advises for the ecology and environment protection in this region were proposed.Result] The monitoring and evaluation showed that the quality situation of the surface water of Yellow River of Three River Sources was follows as: water temperature was 10.7 ℃,pH 8.05,COD 12 mg/L,BOD5 2 mg/L,index of KMnO4 1.54 mg/L,COD 8.19 mg/L,BOD5 2 mg/L,NH4-N 0.139 mg/L,fluoride 0.163 mg/L,sulfide 0.02 mg/L,total phosphor 0.03 mg/L,Cr6+ 0.004 mg/L,phenol 0.002 mg/L,total Hg 0.000 01 mg/L,petroleum 0.02 mg/L,number of fecal coliform <20 /L.Conclusion] The water quality of the surface water in Yellow River of Three River Sources all didn't exceed theⅠclass standard of "Surface Water Environment Quality Standard"(GB3838-2002),showing that the water wasn't polluted and water quality was good.