抚仙湖沉积物磷释放机制浅析

Brief Analysis sedimentsphos phorus release mechanism of Fuxian Lake

以抚仙湖的新鲜沉积物作为实验材料,进行内源性磷释放实验,分析沉积物上覆水及间隙水中磷酸盐含量在培养过程中随pH值、氧化还原电位(Eh)的变化情况。本研究分析结果表明,在好氧与厌氧的条件下,磷酸盐含量随pH值、Eh值的变化呈现先增后减的变化规律。然而,这样的变化规律不是pH或者Eh独立影响下产生的,而是二者共同影响下发生的。

FreshsedimenttoofFuxianwastakenasexperimentalmaterial,endogenousphosphorusreleaseexperimentsconductedtoanalyzetheover-lying water and sediment pore water of the phosphate content in the training process with pH, Eh changes.The present study results indicated that the phosphatecontentwithpH,Ehchangespresentedincreasefirstlyanddecreasesecondlyundertheaerobicandanaerobicconditions.however,thisisnota simplevariationwithchangesinpHorEhisbased,isthecombinedeffectofbothunderhappen.