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Flame Spectrometer? Is this what I need?

Mark Blight blight at igmors.u-psud.fr
Thu Jan 16 05:17:41 EST 1997


I am a molecular biologist by training and so am a bit rusty on some of th=
e apparatus and 
techniques that can be used for more chemical type studies.

However, I am interested in determining the "purity" of a complex mixture =
(a plant extract) 
with respect to other contaminating mixtures from, for example, other plan=
t species. I also 
need to process many samples with great rapidity and so organic extraction=
 and HPLC etc 
are probably too slow. I was wondering if the absorption spectra (like for=
 stellar objects) of 
a reference sample could be compared to an unknown and additional absorpti=
on bands 
subtracted to help identify the possible contaminant by comparison to a da=
tabank of 
potential contaminating substances (or mixtures). Like I said, I'm not ver=
y familiar with 
the techniques that might be employed or the equipment. So, would I need a=
spectrometer (or is that a photometer?) to generate the absorption spectra=
? And can anyone 
with more experience give me an idea if this might work?

Thanks for any suggestions,

Please reply by e-mail.

Dr. Mark A. Blight,
Institut de G=E9n=E9tique et Microbiologie,
CNRS URA 1354,
B=E2timent 409,
Universit=E9 de Paris XI,
91405 Orsay cedex,

Tel:        +33 1 69 15 66 99
Fax:       + 33 1 69 15 78 08

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