Polycyclic aromatic compounds (PAC) in leaf lettuce

Kim Wickström (Corresponding Author), Heikki Pyysalo, Sirkka Plaami-Heikkilä, Jari Tuominen

Research output: Contribution to journalArticleScientificpeer-review

17 Citations (Scopus)


Twentythree samples of leaf lettuce (Lactuca sativa var.crispa) cultivated in private gardens in southern Finland were analyzed for polycyclic aromatic hydrocarbons (PAH) and derivatives. The total PAH concentrations varied from 4.8 to 94 μg/kg fresh weight. Nitro derivatives of PAH were detected in only five samples. One lettuce sample was also analyzed for PAH oxy-derivatives. 9H-Fluoren-9-one (1.3 μg/kg) and 6H-benzo[cd]pyren-6-one (0.3 μg/kg) were found.

The profiles of PAH in lettuce were compared with those in ambient air. It was concluded that PAH in lettuce originate from deposition of PAH-containing particles present in ambient air.

Original languageEnglish
Pages (from-to)182-185
JournalZeitschrift für Lebensmittel-Untersuchung und -Forschung
Issue number3
Publication statusPublished - 1986
MoE publication typeA1 Journal article-refereed


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