Wen Yi, Long Aimin, Dawson Richard, Tao Shu
Department of Urban and Environmental Sciences, Peking University, Processes of the Ministry of Education, Beijing, People's Republic of China.
J Environ Sci Health A Tox Hazard Subst Environ Eng. 2002 Mar;37(3):331-42. doi: 10.1081/ese-120002832.
Carp were exposed to a synthetic solution with varied concentrations of Cu-EDTA and constant levels of other copper species and the amount of copper accumulated in the fish gills was measured. The distributions of copper species in both the bulk solution and the fish gill microenvironment were modeled using MINTEQA2. Under experimental conditions without EDTA, Cu(OH)2 was the most dominant species in the bulk solution while Cu-mucus dominated the gill microenvironment. When Cu-EDTA was added to the solution, copper accumulation in the fish gills increased significantly, suggesting a change in copper speciation. The amount of copper accumulated in the fish gills correlated positively to the concentration of Cu-mucus, rather than to free copper.
将鲤鱼暴露于含有不同浓度Cu-EDTA以及其他铜物种含量恒定的合成溶液中，测量鱼鳃中积累的铜含量。使用MINTEQA2对本体溶液和鱼鳃微环境中铜物种的分布进行建模。在没有EDTA的实验条件下，Cu(OH)2是本体溶液中最主要的物种，而Cu-黏液在鳃微环境中占主导地位。当向溶液中添加Cu-EDTA时，鱼鳃中铜的积累显著增加，表明铜的形态发生了变化。鱼鳃中积累的铜含量与Cu-黏液的浓度呈正相关，而不是与游离铜呈正相关。
