生活污水对蚕豆的氧化损伤实验研究

研究了某污水处理厂不同取样点的污水对蚕豆根部和叶片超氧化物歧化酶(SOD)、过氧化物酶(POD)、过氧化氢酶(CAT)活性及丙二醛(MDA)含量的影响。结果表明:各取样点的污水引起蚕豆根部和叶片SOD活性增加和叶片中POD和CAT活性的增加;随着各取样点CODCr增加,根部的CAT和POD的活性均表现为先升后降。且除了B沉外,各取样点的污水均使得根部和叶片的MDA含量显著增高。由于加氯消毒,出水的毒性高于B沉池污水。

Experiment on oxidative damage of Vicia faba by domestic sewage

The present study investigated toxic impacts of domestic sewage from different treatment processes on malondialdehyde(MDA),superoxide dismutase(SOD),catalase(CAT) and peroxidase(POD) in roots and leaves of Vicia faba.The results showed that SOD activities were increased at all samples both in roots and leaves of Vicia faba;CAT and POD activities were also enhanced in leaves;In roots,CAT and POD activities were enhanced at low CODCr concentrations,and were decreased at high CODCr concentrations.Except for secondary settler,MDA were significantly increased at all samples both in roots and leaves.