于桥水库溶解性有机碳分布特征及三卤甲烷的生成势

Distribution characteristics of dissolved organic carbon and trihalomethanes formation potential in Yuqiao Reservoir

通过测定溶解性有机碳以及三卤甲烷生成势等指标,研究于桥水库溶解性有机碳分布特征及其成因,分析三卤甲烷的存在现状和生成势。结果表明：溶解性有机碳浓度波动不大,在入库区最高,出库区最低,说明其整体自东向西沿水流方向在波动中呈下降趋势;三卤甲烷与温度成正相关,采样期间浓度在0~22.3μg/L之间,符合国家相关标准;三卤甲烷生成势浓度变化范围为60~470μg/L,处于中等水平;溶解性有机碳与三卤甲烷生成势具有显著的正相关关系。

The concentrations of dissolved organic carbon（ DOC） and trihalomethanes formation potential（ THMFP） in water from Yuqiao Reservoir were analyzed,and their distribution characteristics were investigated.The results showed that DOC concentration was at a relatively stable level,the highest value was in the inflow region and the lowest was in the outflow region,indicating that DOC concentration in water from Yuqiao Reservoir is in a downward trend along the flow direction from east to west in the overall volatility. THM is positively related with temperature,whose concentration was 0—22. 3 μg / L,complying with the relevant national standards. The range of THMFP was 60—470 μg / L,which was in a medium level. DOC and THMFP have significant positive correlation.