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The range of polycyclic aromatic hydrocarbons produced by biogenic reactions from steroids and terpenoids is summarized, and plausible chemical and biochemical transformation reactions for their formation proposed. The problem of microbiological synthesis of PAHs is briefly noted together with procedures for the structural determination of biogenic PAHs and comments on their possible environmental significance.
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Neilson et al. (1996) studied this question.
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