在本文报告的研究中，四氯化碳和1,1,1-三氯乙烷在含水层物质组成的微观世界中分别转化为三氯甲烷和1,1-二氯乙烷。对微观世界中三氯乙烯和四氯乙烯的进一步观察表明，这些化合物转化为二氯乙烯。这四种溶剂的生物转化产物由淡水沉积物微生物群在密封的静态微观世界中通过气相色谱法测定，在黑暗环境温度下培养长达16周。在中性至酸性pH、还原电位、缺氧和光照条件下，这四种化合物发生还原脱卤。 氯代烯烃始终比氯代烷烃更耐生物转化。包括27个参考文献、表格和图表。

In the study reported here, tetrachloromethane and 1,1,1-trichloroethane were transformed in microcosms composed of aquifer materials to trichloromethane and 1,1-dichoroethane respectively. Further observations of trichloroethene and tetrachlorethene in microcosms demonstrated the transformation of these compounds to dichloroethene. Biotransformation products of these four solvents by freshwater sediment microbiota, in sealed static microcosms, were determined by gas chromatography during incubation at ambient temperatures in the dark for periods of up to sixteen weeks. Under conditions of neutral to acid pH, reductive potential, and the absence of oxygen and light, reductive dehalogenation of these four compounds occurred. Chlorinated alkenes were consistently more resistant to biotransformation than the chlorinated alkanes. Includes 27 references, tables, figures.