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"Jay DeLong" <jdelong at nwifc_wa.gov>: NANFA-- little more on rotenone

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From: "Jay DeLong" <jdelong at nwifc_wa.gov>
To: nanfa at aquaria_net
Subject: NANFA-- little more on rotenone
Date: Tue, 21 Oct 1997 08:46:10 +0000
Message-ID: <199710211547.IAA23639 at chinook_nwifc.wa.gov>

I did a little reading on rotenone and saw a few interesting things.

There are a few safety measures recommended for handling rotenone: 
avoid prolonged contact with the skin and especially the eyes, nose 
and throat area.  If a large body of water were to be treated, it 
would seem the workers applying the chemical stand more chance of 
being affected than people later coming in contact with the treated 
water.  Rotenone breaks down into carbon dioxide and water.  The 
process is affected by temperature, light, oxygen and alkalinity.  
The cooler the water the longeer rotenone persists.  At 80 degrees F 
treated water will detoxify in about 4 days.  At 45 degrees F it can 
take 30-35 days. 

Even though rotenone is nontoxic to most mammals and birds at 
concentrations used to sample or kill fish populations, swine are
adversely affected by rotenone.  I couldn't find any details that
described what "adversely" means.

Jay DeLong

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