Absorption of arsenic by edible plants

Frank Reilly 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
not mobile.

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.

--
<x-rich><bold><italic>Frank Reilly

Extension Associate - Urban Nutrient Management

Virginia Cooperative Extension - King George County

P.O. Box 410

King George, VA 22485

Phone: 540-775-3062

Fax: 540-775-5645

Internet: freilly at vt.edu

</italic></bold></x-rich>

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