芦苇湿地根际微生物对3种对氯苯的自然降解规律

模拟自然条件用芦苇湿地根际微生物来降解3种对氯苯（对氯甲苯、对氯苯酚、对氯苯胺）。分别配制了含0、40、80、120、160、200mg·L^-1对氯苯的根际微生物菌悬液，用6890N气相色谱仪检测降解溶液中对氯苯的浓度变化。结果表明，芦苇湿地根际微生物对对氯苯的最佳降解浓度为120mg·L^-1左右，最佳降解周期为12d左右。用平板菌落计数法测定降解前后芦苇湿地根际微生物的数量变化。结果表明，在细菌、真菌和放线菌3种土壤主要微生物中，细菌在降解后的数量和增长率均比其他两种微生物高，说明细菌是降解对氯苯的优势微生物。

The Natural Degradation of Three Contraposition Benzene Chlorides by Soil Rhizosphere Microbe in Phragmites Wetland

By simulating natural conditions,three contraposition benzene chlorides(p-chlorotoluene;p-chlorophenol;p-chloroaniline) wastewater were made,which was 0,40 mg.L-1,80 mg.L-1,120 mg.L-1,160 mg.L-1 and 200 mg.L-1 of the ben-zene chlorides and the microbe was extracted from phragmites wetland soil rhizosphere.The results of the concentration of the benzene chlorides detected by the 6890N gas chromatography showed that of the gradient of each benzene chlorides,the 120 mg.L-1 was the best degrading concentration ...