Absorption of arsenic by edible plants
freilly at mail.vt.edu
Tue Mar 28 10:51:43 EST 2000
At ultra-Trace analytical levels (FAR BELOW any levels of toxic consequence),
if the "difference would be far less than the uncertainties in
the method of measurement." then there would be adequate proof that the As was
Alf Christophersen wrote:
> On Sat, 25 Mar 2000 09:33:30 -0500, wtmorgan at pilot.msu.edu (Bill
> Morgan) wrote:
> >No, there is an easier way: the before and after test. You first thest the
> >soil to get the background level of arsenic. Then, you put the treated wood
> >in place and to the "after" tests, looking for a change in concentration.
> >That's the nutshell version, anyway. In reality, you need to use several
> >sites, do several replicates of the before and after for each site, and you
> >need to have controls where no wood (or untreated wood) is used, but you
> >get the idea.
> I'm afraid that difference would be far less than the uncertainties in
> the method of measurement.
Extension Associate - Urban Nutrient Management
Virginia Cooperative Extension - King George County
P.O. Box 410
King George, VA 22485
Internet: freilly at vt.edu
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