CAJ | 학술논문

采用急性毒性实验方法,研究了不同浓度的镉离子（Cd2＋）和汞离子（Hg2＋）单一及复合染毒对田螺肝胰脏过氧化氢酶（CAT）活性的影响.结果表明：在实验剂量范围（ρCd2＋0.5～8.0mg/L,ρHg2＋0.05～0.8mg/L）,单一染毒时,低浓度的Cd2＋,Hg2＋溶液对CAT活性有诱导作用;高浓度的Cd2＋,Hg2＋溶液有抑制作用.Cd2＋,Hg2＋复合染毒时,低、中浓度的镉与汞复合染毒,对CAT活性具有诱导作用,高浓度的镉与汞复合染毒,对CAT活性具有抑制作用.表明了在不同浓度Cd2＋,Hg2＋及联合作用的胁迫下,一定时间后CAT活性出现了较为显著的变化,从而为探讨重金属Cd2＋、Hg2＋对田螺的毒理作用及根据田螺肝胰脏CAT活性的变化可作为间接检测环境的污染程度的指标.
채용급성독성실험방법,연구료불동농도적력리자（Cd2＋）화홍리자（Hg2＋）단일급복합염독대전라간이장과양화경매（CAT）활성적영향.결과표명：재실험제량범위（ρCd2＋0.5～8.0mg/L,ρHg2＋0.05～0.8mg/L）,단일염독시,저농도적Cd2＋,Hg2＋용액대CAT활성유유도작용;고농도적Cd2＋,Hg2＋용액유억제작용.Cd2＋,Hg2＋복합염독시,저、중농도적력여홍복합염독,대CAT활성구유유도작용,고농도적력여홍복합염독,대CAT활성구유억제작용.표명료재불동농도Cd2＋,Hg2＋급연합작용적협박하,일정시간후CAT활성출현료교위현저적변화,종이위탐토중금속Cd2＋、Hg2＋대전라적독리작용급근거전라간이장CAT활성적변화가작위간접검측배경적오염정도적지표.
The effect of single and combinational exposure of heavy metals,including cadmium（Cd） and mercury（Hg）,on catalase（CAT） activity in Mudsnail（Cipangopaludina cathayensis） was studied by the acute exposure experiments.The results showed that,in the experimental dose range（the concentration of Cd2＋ ranging from 0.5 to 8.0 mg/L and Hg2＋ ranging from 0.05 to 0.8 mg/L）,when Cd2＋ or Hg2＋was introduced into the soil alone,low concentration of Cd2＋,Hg2＋ solution were found to have inductive effect over the CAT activity;while high concentration Cd2＋,Hg2＋ solution has,on the contrary,inhibitive effects.When exposed under Cd2＋ and Hg2＋ together for a certain period of time,CAT activity undergoes a significant change,which serves to explore the noxious effect of heavy metals combination of Cd2＋ and Hg2＋ and the CAT activity of the Mudsnail liver and pancreas and thus adopt them as the indices for indirectly testing environmental pollution.