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目的了解恩施市主要河流水质状况,为更好的制定水资源保护政策提供依据和建议。方法根据《地表水环境质量标准》(GB 3838-2002)要求的方法,对恩施市15条河流的源头和中段共30份水样进行检测。结果 15份源头水中,符合地表水环境质量标准三类水标准的水样5份,合格率33.33%15份中段水符合地表水三类标准的0份,合格率0.00%。总氮、总磷结果超标是影响合格率的主要因素。结论恩施市主要河流水质,除总氮和总磷指标外,其他指标均符合国家标准,说明河流存在被污染的可能,水体保护工作有待加强。
Objective To understand the water quality of the main rivers in Enshi and to provide the basis and suggestion for better formulation of water resources protection policies. Methods According to the requirements of “Surface Water Environmental Quality Standard” (GB 3838-2002), a total of 30 water samples from the source and middle sections of 15 rivers in Enshi City were tested. Results Fifteen water samples of 15 sourced water that meet the three water quality standards for surface water environmental quality were qualified. The qualified rate was 33.33%. The 15 middle sections of water met 0 of the three categories of surface water standards with a pass rate of 0.00%. Total nitrogen, total phosphorus results exceeded is the main factor affecting the pass rate. Conclusion The main rivers in Enshi City, except for total nitrogen and total phosphorus, all meet the national standards, indicating that the rivers are likely to be contaminated and the protection of water bodies needs to be strengthened.