Steber J, Herold C P, limia J M
Henkel KGaA, Düsseldorf, Germany.
Chemosphere. 1995 Aug;31(4):3105-18. doi: 10.1016/0045-6535(95)00169-9.
The examination of a number of potential and currently used carrier fluids for invert emulsion drilling fluids in the ECETOC screening test revealed clear differences with respect to their easy anaerobic biodegradability. Fatty acid- and alcohol-based ester oils exhibited excellent anaerobic degradation to the gaseous final end products of the methanogenic degradation pathway, methane and carbon dioxide. Mineral oils, dialkyl ethers, alpha-olefins, polyalphaolefins, linear alkylbenzenes and an acetal-derivative were not or only slowly degraded. Although the poor degradation results obtained in the stringent ECETOC screening test may not be regarded as final proof of anaerobic recalcitrance, nevertheless, these results were found to be in line with the present understanding of the structural requirements for anaerobic biodegradability of chemicals. The validity of the conclusions drawn is corroborated by published results on the anaerobic biodegradation behaviour of ester oils, mineral oils and alkylbenzenes in marine sediments.
在欧洲生态毒理学和化学品毒性中心（ECETOC）的筛选试验中，对多种潜在的以及当前用于反相乳液钻井液的载体流体进行检测后发现，它们在易于厌氧生物降解方面存在明显差异。基于脂肪酸和醇的酯油对产甲烷降解途径的气态最终产物甲烷和二氧化碳表现出优异的厌氧降解性能。矿物油、二烷基醚、α-烯烃、聚α-烯烃、直链烷基苯和一种缩醛衍生物未被降解或仅被缓慢降解。尽管在严格的ECETOC筛选试验中获得的较差降解结果可能不能被视为厌氧难降解性的最终证据，但这些结果与目前对化学品厌氧生物降解结构要求的理解是一致的。已发表的关于酯油、矿物油和烷基苯在海洋沉积物中厌氧生物降解行为的结果证实了所得结论的有效性。
