α-晶型碱式氯化铜的水环境效应研究

Research on No Environmental Toxicity of α-crystal Basic Copper Chloride

分别采用静态法和生长抑制法进行了α-晶型碱式氯化铜对水生生物模糊网纹蚤(Ceriodaphnia dubia)、呆鲦鱼(Pimephalespromelas)、月牙藻(Selenastrum bibraianum)和斜生栅列藻(Scenedesmus oblignus)的毒性试验,旨在明确α-晶型碱式氯化铜在水环境中对水生生物的毒性效应,为碱式氯化铜的生态评价提供安全依据。结果表明,碱式氯化铜对模糊网纹蚤48 h半数致死浓度(48 h LC50)、呆鲦鱼96 h半数致死浓度(96 h LC50)分别为29.7 mg.L-1、39.25 mg.L-1,对月牙藻72 h生长抑制浓度(72 h EC50)、斜生栅列藻96 h生长抑制浓度(96 h EC50)分别为11.1 mg.L-1、101 mg.L-1。以上结果表明,α-晶型碱式氯化铜不具有水生生物毒性。

The static method and growth inhibition method were used respectively to carry out the toxicity test of a-crystal basic copper chloride （TBCC） on such aquatic organisms as Ceriodaphnia dubia, Pimephales promelas, Selenastrum bibraianum and Scenedesm.s oblignus so as to detemaine the toxicity effect of a-crystal basic copper chloride （TBCC） on aquatic organisms in the aquatic environment, thus providing safety basis for the ecological evaluation of basic copper chloride. The result showed that the median lethal concentration of basic copper chloride on Ceriodaphnia dubia （48 h LC50） and on Phnephalespromelas （96 h LC50） was 29.7 mg·L^-1 and 39.25 mg·L^-1 respectively： and its growth inhibition concentration on Selenastrum bibraianum （72 b EC50） and on Scenedesmus oblignus（96 h ECho） was 11.1 mg·L^-1 and 101 mg·L^-1 respectively. The above results demonstrate that r-crystal basic copper chloride did not have toxicity on aquatic organisms.