Copper chloride is produced in the sea and a high concentrations is indeed a roblem, at less than lethal concentrations it reduces growth. One published paper demonstrates how Krill have adapted to its presence and secrete it. It is high concentrations on an industrial scale that causes problems not low concentrations from litre quantaties.
I don't suffer from insanity I enjoy it!
--- On Mon, 6/14/10, Dale J. Chatham <dale@...> wrote:
From: Dale J. Chatham <dale@...>
Subject: Re: [Homebrew_PCBs] Re: Etching note
To: Homebrew_PCBs@yahoogroups.com
Cc: "Malcolm Parker-Lisberg" <mparkerlisberg@...>
Date: Monday, June 14, 2010, 7:31 PM
On 06/14/2010 12:48 PM, Malcolm Parker-Lisberg wrote:
> An estimated 0.34 billion metric tons of copper currently exists in the ocean’s waters based on a concentration of 0.25 ug/L and a volume of 1.338 x 109 km3
> From MadSci Network, Internet site,
> “www.madsci.org”
>
> That's a lot of printed circuit boads
>
>
Copper is death to invertebrates in the ocean. Primarily, that means
coral, shrimp, crabs, ... While your concentrations are correct as an
average, close to the places where the effluent water (and I mean
processed and safe as far as sewage is considered) will have higher
concentrations.
The stuff really should be kept out of the ocean. Of course, if you live
near Louisiana, Mississippi, Alabama or Florida right now, it probably
doesn't reall matter all that much.
--
Our peculiar security is in the possession of a written Constitution.
Let us not make it a blank paper by construction."
--Thomas Jefferson, letter to Wilson Nicholas, 1803
There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order.
-- Ed Howdershelt (Author)
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