dc.contributor.author |
Houle, W. A. |
|
dc.contributor.author |
Brown, H. M. |
|
dc.contributor.author |
Griffith, O. H. |
|
dc.date.accessioned |
2016-05-27T18:31:04Z |
|
dc.date.available |
2016-05-27T18:31:04Z |
|
dc.date.issued |
1979-09 |
|
dc.identifier.citation |
Houle, W.A., Brown, H. M. & Griffith, O. H. (1979) Photoelectric properties and detection of the aromatic carcinogens benzo(a)pyrene and dimethylbenzanthracene. Proc. Natl. Acad. Sci. USA 76, 4180‑4184. |
en_US |
dc.identifier.uri |
http://hdl.handle.net/1794/19895 |
|
dc.description |
8 pages |
en_US |
dc.description.abstract |
The absolute fhotoelectron quantum yield
spectra for benzo[ a ]pyrene an dimethylbenzanthracene are
present~d in th~ wavelength range 180-230 nm. These polycyclic
aromatic carcmogens have photoelectron quantum yields of
approximately 2 X 10-3 electrons per incident photon at 180 nm.
The quantum yields fall off quickly and monotonically at
wavelengths longer than 210 nm (5.9 eV). Threshold values for
benzo[ a ]pyrene and dimethylbenzanthracene are 5.25 ± 0.06
eV and 5.27 ± 0.04 eV, respectively. The photoelectron quantum
yields of benzo[ a ]pyrene and dimethylbenzanthracene are
several orders of magnitude greater than typical components
of biological membranes (amino acids, phospholipids, and
polysaccharides). Preliminary micrographs of benzo[a]pyrene
and dimethylbenzanthracene sublimed onto poly(L-lysine) and
onto dimyristoyl phosphatidylcholine demonstrate the high
contrast of small crystallites of carcinogens against a background
of membrane components. These results and calculations
involving relative contrast factors suggest that the distribution
of these carcinogens in biological membranes can be
determined by using photoelectron microscopy. |
en_US |
dc.language.iso |
en_US |
en_US |
dc.publisher |
Proceedings of the National Academy of Sciences |
en_US |
dc.rights |
Creative Commons BY-NC-ND 4.0-US |
en_US |
dc.title |
Photoelectric properties and detection of the aromatic carcinogens benzo(a)pyrene and dimethylbenzanthracene |
en_US |
dc.type |
Article |
en_US |