A PubMed search is a little frustrating because many of the more recent articles don't have available abstracts; here are a few, however:
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http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=12500801&dopt=Abstract Selected soil samples, collected in Kosovo locations where DU ammunition was expended during the 1999 Balkan conflict, have been investigated...Although the results do not permit any legitimate extrapolation to all the sites hit by the DU rounds used during the conflict, they indicated that there can be "spots" where hundreds of thousands of particles may be present in a few milligrams of DU contaminated soil. The particle size distribution showed that most of the DU particles were <5 microm in diameter and more than 50% of the particles had a diameter <1.5 microm.
I know that the use of "micron" for 1µm = 10^-6 meter is discouraged, and of course the proper term "micrometer" can be confusing because that word is also the name of a tool used by machinists for measuring lengths or thicknesses of small items precisely (and the approved abbreviation "µ" for 10^-6 is an extended ASCII character which is neither found on most typewriters or displayed properly by many e-mail programs), but is "microm" the new preferred term? The preferred term in medical usage? Or just a typo?
-- Ronn! :)
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