| As can be seen from table 1, the two paint samples contain high amounts of anthracite, fluoranthrene and fluorene. |
| This latter hypothesis is very unlikely also because the emission spectrum of fluorene is almost completely insensitive to solvent polarity. |
| It also acts as a chromogenic centre when double bonds or ethylenic linkages are present, as in fluorene ketone or fluorenone. |
| The concentrations of the gas-phase PAHs anthracene, acenaphthene, fluorene, and phenanthrene distinguished the gas phase from urban and rural particulate phases. |
| Degradation of the polycyclic aromatic hydrocarbon fluorene is retarded in a Scots pine ectomycorrhizosphere. |
| The first step of the project involves nitration of fluorene, a commercially available and relatively inexpensive starting material, using nitric acid in acetic acid. |
