In this study, the indigenous microbial mineralisation of ¹⁴C-phenanthrene in seven background soils (four from Norwegian woodland and three from the UK (two grasslands and one woodland)) was investigated. ∑PAHs ranged from 16.39 to 285.54 ng g⁻¹ dw soil. Lag phases (time before ¹⁴C-phenanthrene mineralisation reached 5%) were longer in all of the Norwegian soils and correlated positively with TOC, but negatively with ∑PAHs and phenanthrene degraders for all soils. ¹⁴C-phenanthrene mineralisation in the soils varied due to physicochemical properties. The results show that indigenous microorganisms can adapt to ¹⁴C-phenanthrene mineralisation following diffuse PAH contamination. Considering the potential of soil as a secondary PAH source, these findings highlight the important role of indigenous microflora in the processing of PAHs in the environment.

中文翻译：

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土著¹⁴在“原始”来自挪威和英国的林地和草地土壤C-菲生物降解

在这项研究中，调查了7种背景土壤（4种来自挪威林地，3种来自英国（2种草原和1种林地））中¹⁴ C-菲的土著微生物矿化作用。∑PAHs范围从16.39到285.54 ng g ^-1 dw土壤。在所有挪威土壤中，滞后阶段（¹⁴ C菲矿化达到5％之前的时间）更长，并且与TOC呈正相关，但在所有土壤中与∑PAHs和菲降解物呈负相关。土壤中的¹⁴ C菲矿化因物理化学性质而异。结果表明，土著微生物可以适应^14种微生物。PAH弥漫性污染后C-菲的矿化作用。考虑到土壤作为次生PAH来源的潜力，这些发现凸显了本地微生物区系在环境中PAHs加工中的重要作用。