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nafex - Re: [NAFEX] Lead shot in soil

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  • From: jas39a@earthlink.net
  • To: jas39a@earthlink.net, North American Fruit Explorers <nafex@lists.ibiblio.org>
  • Subject: Re: [NAFEX] Lead shot in soil
  • Date: Mon, 17 Nov 2008 08:45:40 -0500 (GMT-05:00)

I should have added to this, that even in paddy soils, after several weeks of
flooding, dissolved Lead will precipitate out as PbS, which is nearly
insoluble.

Eddie Earles

-----Original Message-----
>From: jas39a@earthlink.net
>Sent: Nov 17, 2008 8:19 AM
>To: nafex@lists.ibiblio.org
>Subject: [NAFEX] Lead shot in soil
>
>The solubility of elemental lead at ambient soil pH values (pH generally in
>the range of 4.8 to 8.0 for agicultural soils in temperate regions) is
>pretty low; for most of us there is no need to worry about contamination of
>food from lead shot in the soil. Go ahead and use your shotguns.
>
>The exception to this is flooded soils (e.g., in rice paddies), where the eH
>(electronegative potential) can be very low; solubility of heavy metals can
>increase even at pH values near neutral in conditions of low eH.
>
>Eddie Earles
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