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Hello I am a student in fourth year Environmental Chemistry and I am seraching for methods of analysis of triazines and Arylureas by GC-MS. Can you help me ? Regards. Christophe Bouillaud email : bsce9603@s4.rtc-sligo.ieReturn to Top
In article <574ekf$nse@acmey.gatech.edu>, Huang@wuchem.wustl.edu writes: }Hello. I have a question here if someone can help me. Besides PEG, what }other scources can give a polymer-like patten with mass diffrence of 44 }amu. Thank you. This type of series can also be seen in other polyethoxylated compounds/mixtures such as polysorbate 80 (a.k.a. Tween 80) and polyethoxylated fatty acid esters. Chris Richardson Chris.Richardson@corp.wrgrace.com http://members.aol.com/chrisjcrReturn to Top
In response to your note below. The ions above the molecular
ion could be due to "self-chemical" ionization. Often a fragment
ion in the spectrum can attach itself to the neutral molecule.
We often see this occur yielding protonated molecular ions
or M+73 or M+147 ions for trimethylsilyl derivatives in
the EI mode. This type of ion increases as the concentration
of the compound in the source increases.
Original note:
I'm trying to interpret a mass spec of [(n-C4H9)4N]3 Sc(CNS)6
(MW=1120) and do not understand the fragmentation pattern. The
peak with the highest m/e is at 1362 which corresponds to the
molecular ion (1120) plus one [(n-C4H9)4N] group (242). The
molecular ion peak at 1120 is missing. The x-ray crystal
structure gives the expected molecular formula. Can someone
explain this phenomenon?
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The preceding is my opinion and only my opinion and has nothing to
do with the organization I work for.
Eric Sappenfield Chemistry Department
sappenfilde@baylor.edu Baylor University
Waco, Texas 76798
James Little
Eastman Chemical Company
Tel. No. 423-229-8685
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