摘要
利用三维荧光光谱、DOC和无机阴离子等指标,研究了桌子山奥灰水中DOM的分布特征.结果表明:DOC和UV_(254)与地下水补径排密切相关,距补给区较近的平沟矿奥灰水DOC和UV_(254)较高,下游的骆驼山矿则明显降低;新的补给水源使利民矿DOC浓度略有增加,之后在利民-棋盘井地区成衰减趋势.奥灰水中DOM出现了4个荧光峰,平沟-骆驼山地区和利民-棋盘井地区peakⅡ和PeakⅣ荧光峰强度均成U型变化,PeakⅢ均逐渐衰减至荧光峰消失;反硝化反应和微生物作用是各荧光峰变化的主要因素.整个研究区内DOC和UV_(254)与各荧光峰强度的相关性低,表明奥灰水中荧光性有机质的比例不高,奥灰水中荧光性有机质具有相对独立性.因此可以根据DOM含量和荧光性确定奥灰水的水化学变化特征.
Three-dimensional excitation-emission matrix （3DEEM）, DOC, UV254 and inorganic anions were used to research the distribution characteristics of fluorescent dissolved organic matter. The results show that the variations of DOC and UV254 are greatly correlative with groundwater recharge-runoff-discharge conditions. DOC concentration and UV254 are higher in Pinggou mine because of closing to recharge area, and decrease of DOC concentration and UV254 is happened in groundwater downstream Luotuoshan mine. DOC concentration lightly increased in Limin mine with new recharge water and then decreased in Limin-Luotuoshan area. There were 4 characteristic fluorescence peaks of DOM in Ordovician water. In Pinggou-Luotuoshan area and Limin-Qipanjing area, the variations of peak II and PeaklV fluorescence intensities （FI） liked a ＂U＂, and PeakIII FI decreased to disappear. The denitrification reaction and biological processes were chiefly contributing to the variations of each fluorescence peak. The degree of correlation was low between DOC （UV254） and fluorescence intensity of each region, which showed that the content of fluorescent organic matter was low proportion in DOM. Fluorescent organic matter was relative independent in Ordovician limestone water. The content and fluorescent characteristics of DOM could be used to make clear the change regulation of water chemistry in Ordovician limestone water.
出处
《辽宁工程技术大学学报（自然科学版）》
CAS
北大核心
2014年第2期167-171,共5页
Journal of Liaoning Technical University (Natural Science)
基金
国家自然科学基金资助项目(41302214)
中国煤炭科工集团西安研究院创新基金资助项目(2013XAYCX010)
关键词
桌子山矿区
荧光性DOM
3DEEM
奥灰水
分布特征
ZhuoZiShan mine area
fluorescent dissolved organic matter
three dimensional excitation emissionmatrix
Ordovician limestone water
Distribution characteristics
