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Subject:	coumaphos & tau-fluvalinate contamination
From:	Little Wolf Apiaries -our bees get all the attraction <[log in to unmask]>
Reply To:	Informed Discussion of Beekeeping Issues and Bee Biology <[log in to unmask]>
Date:	Sun, 13 Dec 2009 09:12:00 -0500
Content-Type:	text/plain
Parts/Attachments:	text/plain (23 lines)

To Mike et al
wrt to use of a solvent
I worked on pesticide determinations back in the early 70's.
Hexane was used as the eluant , in other words, knowing that pesticides tie
to fat , fish etc were ground up and in a separatory funnel shaken up with
hexane as a wash.
The filtered hexane was then injected into a Gas Chromatograph with an
electron capture detector and the printout was compared to known standards.
Obviously many methodologies have advanced , but
I would suggest that you not mess around with this stuff since it is very
volatile causing a major exposion if you're not qualified and do not have
the surroundings to work with anything you don't know about.
Walter
littlewolfapiaries.com

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