CAJ | 학술논문

利用硅胶平板从淤泥中分离到一株脱氮茵FX7，该菌株在好氧条件下具有降解亚硝态氮的能力。亚硝态氮初始浓度为2500mg／L时，该菌株在48h内亚硝态氮降解率为45％。通过形态学特征、生理生化特性及16SrDNA同源性比较对菌株FX7进行鉴定，初步判断其为假单胞菌（Pseudomonassp）。Pb^2＋、Hg^2＋和Cr^2＋对菌株FX7的亚硝态氮降解活性有很强的抑制作用，而低浓度的Zn^2＋和Fe^3＋对其活性有一定的激活作用。
이용규효평판종어니중분리도일주탈담인FX7，해균주재호양조건하구유강해아초태담적능력。아초태담초시농도위2500mg／L시，해균주재48h내아초태담강해솔위45％。통과형태학특정、생리생화특성급16SrDNA동원성비교대균주FX7진행감정，초보판단기위가단포균（Pseudomonassp）。Pb^2＋、Hg^2＋화Cr^2＋대균주FX7적아초태담강해활성유흔강적억제작용，이저농도적Zn^2＋화Fe^3＋대기활성유일정적격활작용。
A denitrogenation microorganism FX7 was isolated with silicate plate from soil. The experiment results showed that under aerobic conditions the reduction efficiency within 48 hours was up to 45% with initial nitrite nitrogen concentration of 2500 mg/L. On the basis of its physiological and molecular properties, strain FX7 was identified as Pseudomonas sp. Though the nitrite nitrogen removal ability of strain FX7 was strongly inhibited by ions Pb^2＋, Hg^2＋and Cr^7＋, the nitrite nitrogen removal ability was activated by ions ofZn^2＋ and Fe^3＋ with low concentration.