University of Leicester geologist, Professor Randall R Parrish will be giving this message to the 119th annual meeting of the Geological Society of America at the Colorado Convention Center in Denver, Colorado on 28 October 2007 at 10.05-10.25am.
In his talk entitled: ‘Depleted uranium (DU): its environmental dispersion and human uptake’ he will outline his research findings on a new method of tracing DU.
The issue has been the subject of investigations by the Royal Society (UK), the National Academy of Science (US) and other bodies, but studies of individuals who have been clearly exposed to environmental contamination are lacking.
Professor Parrish commented: “Our objective was to develop a high sensitivity method of EU detection in urine, using MC-ICP mass spectrometry that would be capable of detecting an individual’s exposure to DU up to 20 years after the event.
“We developed this method and applied it to individuals, either known or likely to have had a DU aerosol inhalation exposure, and to a large voluntary cohort of 1991 Gulf conflict veterans to assess DU exposure screening reliability and accumulate data on exposure.”
Using his method, Professor Parrish and his research team have found traces of DU in urine more than 20 years later, in those cases where exposure to DU aerosol has been unambiguous and in sufficient quantity. This is true even when the U concentration is at the low end of the normal range.
Most such samples would return a negative screening result with other, less sensitive, methods.
Professor Parrish added: “Our method has been used to show that it is capable of resolving legal cases based on a claim of DU exposure. Also it shows that the occurrence of DU in 1991 Gulf Conflict veterans is likely to be uncommon to rare, but if a significant inhalation exposure occurred then it can be detected in urine for decades to come.
“It offers a way to resolve debates about DU and health and provide perspective on the issue. Resolving the potential implications of DU to health in contaminated populations is best done by properly testing exposed cohorts. The cohorts in need of study are those living in DU-contaminated areas of Iraq, or those living in the vicinity of DU munitions factories with large DU contamination footprints.”
Ather Mirza | alfa
UCI and NASA document accelerated glacier melting in West Antarctica
26.10.2016 | University of California - Irvine
Ice shelf vibrations cause unusual waves in Antarctic atmosphere
25.10.2016 | American Geophysical Union
Ultrafast lasers have introduced new possibilities in engraving ultrafine structures, and scientists are now also investigating how to use them to etch microstructures into thin glass. There are possible applications in analytics (lab on a chip) and especially in electronics and the consumer sector, where great interest has been shown.
This new method was born of a surprising phenomenon: irradiating glass in a particular way with an ultrafast laser has the effect of making the glass up to a...
Terahertz excitation of selected crystal vibrations leads to an effective magnetic field that drives coherent spin motion
Controlling functional properties by light is one of the grand goals in modern condensed matter physics and materials science. A new study now demonstrates how...
Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo led the development of a new extensible wiring technique capable of controlling superconducting quantum bits, representing a significant step towards to the realization of a scalable quantum computer.
"The quantum socket is a wiring method that uses three-dimensional wires based on spring-loaded pins to address individual qubits," said Jeremy Béjanin, a PhD...
In a paper in Scientific Reports, a research team at Worcester Polytechnic Institute describes a novel light-activated phenomenon that could become the basis for applications as diverse as microscopic robotic grippers and more efficient solar cells.
A research team at Worcester Polytechnic Institute (WPI) has developed a revolutionary, light-activated semiconductor nanocomposite material that can be used...
By forcefully embedding two silicon atoms in a diamond matrix, Sandia researchers have demonstrated for the first time on a single chip all the components needed to create a quantum bridge to link quantum computers together.
"People have already built small quantum computers," says Sandia researcher Ryan Camacho. "Maybe the first useful one won't be a single giant quantum computer...
14.10.2016 | Event News
14.10.2016 | Event News
12.10.2016 | Event News
27.10.2016 | Materials Sciences
27.10.2016 | Physics and Astronomy
27.10.2016 | Life Sciences