Hullebusch E V, Auvray F, Bordas F, Deluchat V, Chazal P M, Baudu M
Laboratoire des Sciences de l'Eau et de l'Environnement, Faculté des Sciences et Techniques, 123, Avenue Albert Thomas, F-87060 Limoges Cedex, France.
Environ Technol. 2003 Jun;24(6):787-96. doi: 10.1080/09593330309385615.
Lake Courtille is a shallow eutrophic polymictic lake treated with copper sulphate for four years. Water column monitoring and laboratory experiments have shown that dissolved copper (CuD) behaviour correlates well with Dissolved Organic Carbon (DOC). Sequential extraction indicates that a significant fraction of the sediment-borne Cu is associated with the organic fraction (50% to 88% of total copper). This fraction of copper could be released into the water column depending on environmental conditions. Laboratory resuspension experiments have shown that significant short term release of Cu was not possible under circumneutral pH and the oxygenated conditions of the lake (less than 3% of the total copper sediment was released). Nevertheless over the long term, a fraction of the copper bound to the sediment could be released depending on the organic matter mineralization which could explain the presence of copper in the water column one year after the last copper addition.
库尔蒂勒湖是一个浅水富营养化多循环湖泊，已用硫酸铜处理了四年。水柱监测和实验室实验表明，溶解态铜（CuD）的行为与溶解有机碳（DOC）密切相关。连续萃取表明，沉积物中很大一部分铜与有机部分相关（占总铜的50%至88%）。这部分铜可能会根据环境条件释放到水柱中。实验室再悬浮实验表明，在湖泊的中性pH值和有氧条件下，短期内不可能有大量的铜释放（释放的铜不到沉积物总铜的3%）。然而，从长期来看，根据有机物质的矿化情况，沉积物中结合的一部分铜可能会释放出来，这可以解释在最后一次添加铜一年后水柱中铜的存在情况。
