CAJ | 학술논문

以中肋骨条藻作为受试藻种,研究铜离子、纳米铜和微米铜对它的毒性效应.结果表明,3 种铜试剂在不同程度上都会抑制中肋骨条藻的生长,藻密度和叶绿素的增加值与铜试剂加入量基本呈负相关.在整个实验周期96h内,当Cu2+浓度大于0.1mg/L时会对藻产生很大的抑制作用,而纳米铜浓度大于0.15mg/L会严重影响藻密度和叶绿素,在24h内当微米铜浓度低于2mg/L时会促进藻的生长,在96h时高浓度(>1mg/L)会抑制其生长.纳米铜对中肋骨条藻的毒性作用一方面是溶出的铜离子,另一方面是纳米粒子本身.
이중륵골조조작위수시조충,연구동리자、납미동화미미동대타적독성효응.결과표명,3 충동시제재불동정도상도회억제중륵골조조적생장,조밀도화협록소적증가치여동시제가입량기본정부상관.재정개실험주기96h내,당Cu2+농도대우0.1mg/L시회대조산생흔대적억제작용,이납미동농도대우0.15mg/L회엄중영향조밀도화협록소,재24h내당미미동농도저우2mg/L시회촉진조적생장,재96h시고농도(>1mg/L)회억제기생장.납미동대중륵골조조적독성작용일방면시용출적동리자,령일방면시납미입자본신.
By usingSkeletonema costatum as experimental algae, the toxic effect of Cu2+, nanometer-copper, and micrometer-copper on it was studied.The results showed that the three copper reagents could inhibited the growth ofS. costatum in different degrees. Generally, the increase value of chlorophyll and algal cell density had negative relationship with addition of the copper reagents. In the whole experimental period (96hours), the growth of S.costatumwas strongly inhibited if the concentration of Cu2+was higher than 0.1mg/L, and the algal density and chlorophyll were seriously affected as the concentration of nano-copperwas higher than 0.15mg/L. Micro-copper stimulated the growth ofS. costatum within 24h when its concentration was lower than 2mg/L. Algae growth was inhibited within 96h in high concentration of micro-copper (>1mg/L). The mechanism of the toxic effect of copper nanoparticles on Skeletonema costatum was attributed to its dissolved copper ions and the nanoparticles itself.