金属卟啉化合物对五氯硝基苯生物降解作用的影响  

Effect of Metal Porphrins on Biodegradation of Pentachloronitrobenzene

作　　者：赵淑杰[1] 陈井影[2] 赵晓松[1] 

机构地区：[1]吉林农业大学资源与环境学院,长春130118 [2]东华理工学院土木与环境工程系,抚州344000

出　　处：《吉林农业大学学报》2005年第4期416-419,共4页Journal of Jilin Agricultural University

基　　金：吉林省科技厅资助(吉科合字212-10)

摘　　要：在试验条件下,研究了3种金属卟啉化合物对1株细菌和1株真菌降解五氯硝基苯(PCNB)的影响.结果表明:Meso-四(对羟基苯基)卟啉铁(THPPFe(Ⅲ))和Meso-四(对羟基苯基)卟啉锰(THPPMn(Ⅱ))对PC-NB的生物降解有促进作用,表现为PCNB的生物降解残留量降低了3%～15%.在细菌和真菌降解PCNB的2个体系中,THPPFe(Ⅲ)的质量分数为6 mg/L时,PCNB的生物降解率最高,分别提高了6.0%和15.2%;TH-PPMn(Ⅱ)的质量分数为8 mg/L时,PCNB生物降解率最高,分别提高了12.0%和12.8%.Meso-四(对羟基苯基)卟啉锌(THPPZn(Ⅱ))则抑制了PCNB的生物降解,表现为PCNB的生物降解残留量相对于空白提高了3%～16%.金属卟啉化合物存在下PCNB的生物降解依然符合一级反应动力学模式:C=C0e-kt.The experiment was carried out to analyze influence of three kinds of metal porphyrins upon pentachloronitrobenzene （PCNB） biodegradation. The strain included one bacterium and one fungus. The results showed that meso-tetra （para-hydroxylphenyl） porphyriniron and meso-tetra （para-hydroxylphenyl） porphyrinmanganese accelerated the degradation of PCNB, reflecting in the fact that the residual dose of PCNB decreased by 3% to 15%. Compared with bacterium degradation and fungus degradation, the promotive function of meso-tetra （para-hydroxylphenyl） porphyriniron whose chroma was 6 mg/L was obvious upon pentachloronitrobenzene＇s biodegradation, the rate of degradation increased by 6% and 15.2% ; the promotive function of meso-tetra （para-hydroxylphenyl） porphyrinmanganese whose chroma was 8 mg/L was obvious upon pentachloronitrobenzene＇s biodegradation, the rate of degradation increased by 12% and 12.8 % . However, the existence of meso-tetra （para-hydroxylphenyl） porphyrinzinc restrained the degradation of PCNB, reflecting in the fact that the residual dose of PCNB increased by 3% to 16%. The pentachloronitrobenzene＇s biodegradation still accorded with the first scale pattern of reaction dynamics （ C=Co e^-kt ） with the existence of metal porphyrins.

关 键 词：金属卟啉化合物 五氯硝基苯 生物降解 

分 类 号：X132[环境科学与工程—环境科学]