Cai Shun-Zhi, Li Da-Peng, Wang Ren, Liu Yan-Jian, Xu Yao, Yu Sheng-Nan, Huang Yong
Department of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215011, China.
Huan Jing Ke Xue. 2016 Nov 8;37(11):4203-4211. doi: 10.13227/j.hjkx.201605122.
This work aimed to clarify the influence of multiple disturbance factors on the migration and transformation of endogenous phosphorus. In this experiment, the sediment of Meiliang Bay in Taihu Lake was studied as the major research object. With the help of Rhizon sampling technique, Unisense microelectrode system and so on, this experiment studied the change regularities of dissolved oxygen between sediment and water interface, different forms of phosphorus and iron ions under disturbance. The results indicated that the dissolved oxygen content in sediment decreased in the presence of as compared with the control experiment. Disturbance made the peak area of DIP in interstitial water to migrate from 3-4 cm to 4-5 cm, which suggested that the "active region" of DIP regeneration went deeply into sediment with the appearance of and . Meanwhile, the existence of and algae further reduced DIP in the interstitial water. That was because the released NHCl-P was transferred to phosphorus in overlying water and Fe/Al-P. With the increase of disturbance factors, the transformation ratio from NHCl-P to Fe/Al-P also increased gradually (from 44% to 59%).
本研究旨在阐明多种干扰因素对内源磷迁移转化的影响。本实验以太湖梅梁湾沉积物为主要研究对象。借助Rhizon采样技术、Unisense微电极系统等，研究了扰动作用下沉积物与水界面溶解氧、不同形态磷和铁离子的变化规律。结果表明，与对照实验相比，在[具体物质未给出]存在的情况下，沉积物中的溶解氧含量降低。扰动使间隙水中溶解性无机磷（DIP）的峰值区域从3 - 4厘米迁移至4 - 5厘米，这表明随着[具体物质未给出]和[具体物质未给出]的出现，DIP再生的“活跃区域”深入到沉积物中。同时，[具体物质未给出]和藻类的存在进一步降低了间隙水中的DIP。这是因为释放的NHCl - P转化为上覆水中的磷和铁/铝结合态磷（Fe/Al - P）。随着干扰因素的增加，从NHCl - P转化为Fe/Al - P的转化率也逐渐增加（从44%增至59%）。
