Laser-Induced Fluorescence of Pyrene and Other Polycyclic Aromatic Hydrocarbons211 (PAH) in Seawater

摘要

Polycyclic aromatic hydrocarbons (PAH) in the marine environment are currently of211u001egreat concern due to their potential carcinogencity. The standard methods of 211u001edetection and quantification of PAH in seawater and sediments are costly, time-211u001econsuming and do not account for the heterogeneous nature of their distribution 211u001eand sources. Laser-induced, time-resolved fluorescence spectroscopy may help to 211u001eovercome these limitations. Several PAH have relatively long-lived stimulated 211u001efluorescence emission, which allow them to be detected among a background of more 211u001eintense but shorter-lived chromophores. Using time-delayed techniques we have 211u001eshown an ability to detect PAH principally pyrene, at environmental levels both 211u001ein the laboratory and in situ in Boston Harbor and other study areas. Further 211u001edevelopment may lead to the rapid determination of several PAH in typical near-211u001eshore marine environments. Copyright 1998 Elsevier Science B.V. All rights 211u001ereserved.