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MOBILE汽车源排放因子计算模式研究
引用本文:傅立新,贺克斌,何东全,唐仲洲,郝吉明.MOBILE汽车源排放因子计算模式研究[J].环境科学学报,1997,17(4):474-479.
作者姓名:傅立新  贺克斌  何东全  唐仲洲  郝吉明
作者单位:贵州省环保科研所,西南师范大学生物系,贵州师范大学生物系
摘    要:在盆栽条件下,研究了土壤中Pb、Hg及其相互作用对烟草叶片活性氧代谢的影响.实验结果表明:随着Pb、Cd处理浓度的增加,POD活性逐渐增加,SOD开始上升后转而下降,CAT活性逐渐下降.它既诱导了活性氧的生成,又影响活性氧清除系统对活性氧的清除能力,结果造成活性氧的产生和清除之间的不平衡,致使相关的生理生化过程紊乱,加速了叶片衰老的进程.Pb、Hg对烟草叶片抗氧化酶代谢的影响,两者之间存在着一定的协合作用.

关 键 词:土壤  Pb  Hg  烟草  抗氧化酶

A STUDY ON MODELS OF MOBILE SOURCE EMISSION FACTORS
Fu Lixin,He Kebin,He Dongquan,Tang Zhongzhou and Hao Jiming.A STUDY ON MODELS OF MOBILE SOURCE EMISSION FACTORS[J].Acta Scientiae Circumstantiae,1997,17(4):474-479.
Authors:Fu Lixin  He Kebin  He Dongquan  Tang Zhongzhou and Hao Jiming
Institution:Guizhou Institute of Environmental Protection,Guiyang 550002,Guizhou Institute of Environmental Protection,Guiyang 550002,Guizhou Institute of Environmental Protection,Guiyang 550002,Department of Biology,Southwest Normal University,Chongqing 630715 and Department of Biology,Ghuizhou Normal Universit y,Guiyang 550001
Abstract:Based on pot experiments,the authors reports the effects of Pb,Hg in soil and their interaction on the metabolism of activated oxygen in tobacco leaves.With the consistency Pb,Hg treatment,the activity of POD gradually increases,that of SOD increases at first and decreases afterwards,that of CAT gradually decreases.There is also impact on removing activited oxygen capacity of the removing system.The effect results in an imbalance of activited oxygen produce and scavenge,physiological biochemical process disorder,and accelerated process of senescence.Between Pb and Hg,there is a synergistic action and this interaction effects the metabolism of activated oxygen in tobacco leaves.
Keywords:Soil  Pb  Hg  tobacco  anti oxidation enzymes  
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