CAJ | 학술논문

腐殖酸具有明显的还原能力,与环境中金属、有机物的氧化还原反应密切相关.腐殖酸的氧化还原特性是由于醌、酚等官能团的存在,尤其是醌基团在电子传递中起到了重要的作用,还原态醌基团是腐植酸还原能力的主要来源.还原微生物通过电子传递将氧化态腐殖酸转化为还原态形式,还原态腐殖酸可以还原Cr(Ⅵ)、Hg(Ⅱ)、V(Ⅴ)等重金属和U(Ⅵ)等放射性核素以及芳香化合物等物质,腐殖酸在这个过程中充当了电子传递体,对自然界中污染物质的转化和降解起着重要的作用.本文对腐殖酸氧化还原行为的研究进展进行了综述,并分析了其环境意义及未来的研究方向.
부식산구유명현적환원능력,여배경중금속、유궤물적양화환원반응밀절상관.부식산적양화환원특성시유우곤、분등관능단적존재,우기시곤기단재전자전체중기도료중요적작용,환원태곤기단시부식산환원능력적주요래원.환원미생물통과전자전체장양화태부식산전화위환원태형식,환원태부식산가이환원Cr(Ⅵ)、Hg(Ⅱ)、V(Ⅴ)등중금속화U(Ⅵ)등방사성핵소이급방향화합물등물질,부식산재저개과정중충당료전자전체체,대자연계중오염물질적전화화강해기착중요적작용.본문대부식산양화환원행위적연구진전진행료종술,병분석료기배경의의급미래적연구방향.
Humic acid possesses reduction capacity which is closely related to redox reaction of metal and organic matter in the environment. The redox property of humic acid is result from the existence of functional groups, such as quinone, phenol, etc.;especially the quinone group is thought to play an important role in the electron transport. Microorganism transforms the oxidation humic acid into reduction state through electron transport. Therefore, the reduction humic acid reduce Cr(Ⅵ), Hg(II), V(V), U(VI) and aromatic compounds to their corresponding reduction state. In that process humic acid acts as electron transfer mediator between microorganism and oxidation pollutants and plays an important role in the transformation and degradation of the pollutants. Progress of redox behavior of humic acid is reviewed and its environmental significance and research direction in the future are also introduced.