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Alle Beiträge des Diskussionsthemas "SPME and Phosphines (in blood)"
  
Message 1 in thread
Von:Harry Loris (hloris@MailAndNews.com)
Betrifft:SPME and Phosphines (in blood)
Newsgroups:sci.techniques.mass-spec
View this article only
Datum:2001-04-30 06:40:02 PST
Looking for this akward combination. Has naybody done or heard something
about
it before? Thank you in advance

Harry

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Message 2 in thread
Von:Tobias Kind (kind@rziris.rz.uni-leipzig.de)
Betrifft:Re: SPME and Phosphines (in blood)
Newsgroups:sci.techniques.mass-spec
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Datum:2001-04-30 09:30:08 PST
Dear Harry,

Harry Loris wrote:
SPME and Phosphines (in blood)

} Looking for this akward combination. Has naybody done or heard something
} about
} it before? Thank you in advance

I don't want to "pester" you , but

* Which phosphine_s_ ? There are thousands (possible)

there is a difference if you want to measure trimethyl- or
triphenyl-phosphines or GeH5P or
(1,1-dimethylethyl)[5-methyl-2-(1-methylethyl)cyclohexyl](phenylmethyl)-
phosphine
...
  (Kow,Bp,volatility)

* Which analysis method ? GC, HPLC ,CE ?
  ..maybe not so important.

* SPME ?? want to do HEADSPACE or DIRECT ?
   ...maybe not so important.

---------

Maybe there is no direct method from a color prospect,
but you can take for volatiles (trimethyl) (bad peaks):

The measurement of volatile constituents in Foray 48B, an insecticide
prepared from Bacillus thuringiensis var. kurstaki, C. van Netten et al.
The Science of the Total Environment 263 2000 155-160

or for triphenylphoshine ( Henry constant = 2.26E-008 atm-m3/mole,
logP=5.69) you have to put the fiber in to the solution (a lot of problems
will occour)

or you are doing first  a  liquid-liquid extraction or any other
sample preparation...or:

I think - first choose the molecule, second can take any other SPME-BLOOD
method for a molecule with similiar properties.

Or maybe you can tell us the problems which occoured during analysis...

With kind regards
Tobias Kind
  

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© 2002 Tobias Kind - www.amdis.net - Alle Rechte vorbehalten.