Individual and Joint Stress of Lead and Mercury on Growth,Glutathione and Glutathione-Related Enzymes of Scenedesmus quadricauda
铅、汞单一及联合胁迫对栅藻的生长、GSH含量及相关酶活性的影响

To understand the toxicity mechanisms of mixed heavy metals on aquatic plant,indicators of algea growth rate,content of reduced glutathione(GSH),activities of glutathione S-transferase(GST) and glutathione peroxidase(GPx) of green algae,Scenedesmus quadricauda were measured to analyze the individual and joint toxic effects of lead and mercury.The results show that the 96h EC_(50) of algae growth inhibition by lead Pb(NO_3)_2] and mercury(HgCl_2) are(0.6789)(mg/L) and(0.1401)(mg/L) respectively.After 12 h i...