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紫露草微核效应与SO₂和NO_x剂量间关系的试验研究

摘要点击 717 全文点击 438 修订日期：1993-06-27

英文关键词 tradescantia micronucleus frequency dose-response relationship sulfur dioxide nitrogen oxides

作者	单位
雒步云
刘文霞
杜连宝
吴茹兰
张耀宽

中文摘要

利用紫露草微核技术对大气中重要的污染物SO₂和NO_x进行了室内外试验。结果表明,紫露草对大气中SO₂和NO_x较敏感,紫露草微核频率MCN%(效应y)与SO₂、NO_x的浓度(剂量x)的关系在一定的范围内呈正相关。对于SO₂当浓度在0.00-3.75mg/m³之间时,对应的微核频率y=8.38+4.38x,r=0.91;对于NO_x当浓度在0.00-1.00mg/m³之间时,对应的微核频率y=4.84+14.94x,r=0.99;对于SO₂和NO_x,当SO₂浓度在0.00-0.75mg/m³,NO_x浓度在0.00-1.00mg/m³之间时,对应的微核频率g=2.92十17.05x1十15.60x2,R=0.926;并且NO_x的剂量对微核的效应要大于SO₂对微核的效应,SO₂、NO_x的剂量对微核效应呈拮抗作用。确认此法可用于大气环境污染状态的侦察性监测。

英文摘要

study has been carried out on monitoring atmospheric SO₂ and NO_x by using Tmicronucleus micronucleus technique. The results showed that Tmicronucleus was sensitive to a variation in the atmospheric concentration of SO₂ and NO_x. A Tmicronucleus micronucleus response (frequency) was closely related to the domain doses (concentrations) of SO₂ and NO_x in the air. A linear regression equation of the Tmicronucleus micronucleus frequency as a function of SO₂ and NO_x doses had been deduced. It was found that the response to SO₂ was inferior and opposite to a response to NO_x. This can be used to properly estimate the concentrations of SO₂ and NO_x in the air and to assess the level of air pollution.

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