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POLLUTION
Pollution > Beach Water Pollution Brought into the Light
Beach Water Pollution Brought into the Light 10/10/2011
A "chemiluminescent probe" might sound like something to
dread
during your next medical checkup is a new tool in development
that
San Diego, USA. Ken Browne of Gen-Probe Incorporated,
Dimitri
Deheyn of Scripps Institution of Oceanography at UC San Diego
and
colleagues developed a new method for detecting molecules
using
probes that employ light emitted from chemical reactions, or
chemiluminescence.
As described in a research paper the scientists recently
published in the
Journal of the American Chemical Society, chemiluminescent
probes are
faster and thousands of times more sensitive than traditional
detection
methods. Based on their success, Deheyn says they are working to
develop
the concept into tools for rapid detection of viruses and
microbes in a range
of environments.
For coastal managers and others charged with testing beach water
safety,
the advancement could mean an enormous leap in speed and
efficiency.
Beach closures due to contamination continue to plague popular
coastal
destinations. A regional blackout on 8th September 2011 cut
power to San
Diego pump facilities, spilling millions of gallons of raw
sewage into local
waters and placing several beaches off limits.
Traditional testing methods include o rganic fluorescent probes
that can
provide an inexact picture of their targets, whether bacteria,
viruses, or
fungi, necessitating verification that can increase time and
expense. The newchemiluminescent probes signal only in the presence
of their specific targets
after a short sequence of simple, automatable steps. The
chemical triggering
of these probes makes them up to 10,000 times more sensitive
than
fluorescent probes.
Beyond beach water, such probes could be useful to industries
ranging from
agriculture, food handling to pharmaceuticals and health care in
the search
for new and faster methods of detecting microscopic targets.
In addition to Browne and Deheyn, coauthors of the study include
Gamal El-
Hiti, Keith Smith, and Ian Weeks of Cardiff University. The
results of the
project are partially based upon work supported by the Air Force
Office o f
Scientific Research.
Source: Scripps Institution of Oceanology
Website: http://www.ucsd.edu
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