Relative hopane content confirming the mineral origin of hydrocarbons contaminating foods and human milk

Autor: M Biedermann, Lanfranco S. Conte, Sabrina Moret, Tiziana Populin, Konrad Grob
Rok vydání: 2004
Předmět:
Zdroj: Food Additives and Contaminants. 21:893-904
ISSN: 0265-203X
DOI: 10.1080/02652030400001164
Popis: Hopanes, triterpenoid hydrocarbons formed under geological conditions, were analysed to confirm the mineral origin of the unresolved complex mixtures of hydrocarbons observed in the gas chromatography with flame ionization detection chromatograms of human milk and certain foodstuffs. The 'relative hopane content' (RHC) is introduced, i.e. it is the area ratio of the sum of the hopanes and the paraffins in the same segment of the chromatogram. The RHC in various mineral oil products (motor oils, hydraulic oils, lubricating oils, Vaseline) was 3.4%, with a relative standard deviation of 19%. The RHC determined in samples of vegetable oils, mussels and clams as well as of human milk containing an unresolved complex mixture of hydrocarbons was in the same range, confirming that these samples were contaminated by mineral oil material.
Databáze: OpenAIRE