Tang Qian, Liu Bo, Wang Wen-Lin, Xing Peng, Yuan Jing-Wen, Ji Wei, Shen Xiao-Yu, Ji Jia-le
School of Geographical Science, Nantong University, Nantong 226007, China.
Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China.
Huan Jing Ke Xue. 2016 Jun 8;37(6):2171-2178. doi: 10.13227/j.hjkx.2016.06.021.
To reveal the controlling mechanism of urban polluted river,four trophic level urban river was studied. The change of distribution of organic matter and nitrogen in the sediment was studied while the organic matter was disposed. High level of organic matter is the significant feature of urban city rivers. the humin (HM) was the major fraction of humus, accounting for more than 65% of OM. The most proportion of the total nitrogen (TN) was organic nitrogen which accounted for more than 50%. The amount of organic matter removal increased after the sediment adsorbed the saturated ammonia, which suggested ammonia as the main limited factor for the decomposition of organic matter. The most of Ammonia was adsorbed onto unstable humins. The HM was more stable than other organic matter which was disposed by Hydrogen peroxide (HO).
为揭示城市污染河流的控制机制，对四级营养水平的城市河流进行了研究。在处理有机物质时，研究了沉积物中有机物和氮分布的变化。高含量的有机物是城市河流的显著特征。腐殖质（HM）是腐殖质的主要部分，占有机物质（OM）的65%以上。总氮（TN）的大部分是有机氮，占比超过50%。沉积物吸附饱和氨后，有机物去除量增加，这表明氨是有机物分解的主要限制因素。大部分氨吸附在不稳定的腐殖质上。与用过氧化氢（HO）处理的其他有机物相比，腐殖质更稳定。
