Pedersen D, Sayler G S
Can J Microbiol. 1981 Feb;27(2):198-205. doi: 10.1139/m81-031.
Temporal and spatial variability of methanogenesis and the effects of environmental contamination on methanogenesis were examined in freshwater sediments. Temporal and spatial variation was found to be significant in uncontaminated freshwater reservoir sediments. The relative concentration of organic matter and temperature explained approximately 43% of the total variability. Known environmental contaminants marginally inhibited methanogenesis and only a coal conversion effluent and phenanthrene, 100 mg L-1, demonstrated statistically significant inhibition of methanogenesis under acute dosing conditions. Methyl viologen, a potent inhibitor of pure culture methanogenesis, inhibited sediment methanogenesis at high concentrations, i.e., 2570 mg L-1, indicating that the sediment environment protected the methanogenic population from the toxic effects of the environmental contaminants.
在淡水沉积物中研究了甲烷生成的时空变异性以及环境污染对甲烷生成的影响。在未受污染的淡水水库沉积物中发现时空变化显著。有机物质的相对浓度和温度解释了约43%的总变异性。已知的环境污染物对甲烷生成有轻微抑制作用，只有在急性给药条件下，煤转化废水和100 mg/L的菲对甲烷生成有统计学上显著的抑制作用。甲基紫精是纯培养甲烷生成的有效抑制剂，在高浓度即2570 mg/L时抑制沉积物甲烷生成，这表明沉积物环境保护了产甲烷菌群免受环境污染物的毒性影响。
