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| 恶臭假单胞菌与土壤矿物的界面反应及其对甲基对硫磷降解影响 | |
| 引用本文： | 冯伟亮,贺小敏,沈敏,张晓斌,陈浩,黄巧云.恶臭假单胞菌与土壤矿物的界面反应及其对甲基对硫磷降解影响[J].分析科学学报,2009,25(5). |
| 作者姓名： | 冯伟亮 贺小敏 沈敏 张晓斌 陈浩 黄巧云 |
| 作者单位： | 1. 华中农业大学理学院,湖北武汉,430070 2. 华中农业大学理学院,湖北武汉,430070;湖北省环境监测中心站,湖北武汉,430072 3. 华中农业大学农业部亚热带农业资源与环境重点开放实验室,湖北武汉,430070 |
| 基金项目： | 国家自然科学基金，校交叉学科基金 |
| 摘 要： | 研究了恶臭假单胞菌在蒙脱石、高岭石和针铁矿表面的吸附特征,探讨了细菌在不同粘粒矿物存在下的生长代谢活性,及对甲基对硫磷的降解动力学.结果表明, 三种矿物对细菌的吸附强度为针铁矿>高岭石>蒙脱石.当甲基对硫磷浓度较低时(10 mg/L), 游离菌的降解能力始终比固定菌强;在高浓度(20～40 mg/L)下, 固定菌对农药的降解能力起初(前9 h)高于游离菌, 随后渐渐低于游离菌.不同矿物固定的细菌, 其降解能力为蒙脱石>高岭石>针铁矿.蒙脱石对细菌的亲和力最弱, 但它对细菌的代谢活性有促进作用, 有利于农药的生物降解; 而针铁矿与细菌的结合强度最大, 细菌活性受到抑制, 不利于农药的降解. |
| 关 键 词： | 甲基对硫磷 恶臭假单胞菌 粘粒矿物 吸附 降解 |
The Interface Reaction between Pseudomonas putida and Soil Clay Minerals and Its Effect on the Biodegradation of Methyl Parathion |
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| FENG Wei-liang,HE Xiao-min,SHEN Min,ZHANG Xiao-bin,CHEN Hao,HUANG Qiao-yun.The Interface Reaction between Pseudomonas putida and Soil Clay Minerals and Its Effect on the Biodegradation of Methyl Parathion[J].Journal of Analytical Science,2009,25(5). | |
| Authors: | FENG Wei-liang HE Xiao-min SHEN Min ZHANG Xiao-bin CHEN Hao HUANG Qiao-yun |
| Institution: | FENG Wei-liang1,HE Xiao-min1,2,SHEN Min1,ZHANG Xiao-bin1,CHEN Hao1,HUANG Qiao-yun3(1.College of Sciences,Huazhong Agriculture University,Wuhan 430070,2.Environmental MonitoringCenter of Hubei Province,Wuhan 430072,3.Key Laboratory of Subtropical Agricultural Resources andEnvironment,Ministry of Agriculture,Wuhan 430070) |
| Abstract: | Adsorption characteristics and metabolism curves of Pseudomonas putida on the surfaces of montmorillonite,kaolinite and goethite were investigated.Biodegradation kinetics of methyl parathion by Pseudomonas putida was also measured in the presence of various clay minerals.The binding strength of Pseudomonas putida on minerals followed the sequence of goethite > kaolinite > montmorillonite.The metabolism abilities of free cells were stronger than that of immobilized ones at a methyl parathion of 10 mg/L over ... |
| Keywords: | Methyl Parathion Pseudomonas putida Clay minerals Sorption Biodegradation |
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