Ann,
You don't say what your objectives are so it's hard to know what might meet them. If you want to monitor specific gases in real time that would be one situation. If you want to know the redox condition, irrespective of individual species, that could be another. If you want to do a full profile of the gases you will probably need to use GC-MS and portability may be a problem. You can, of course, sample the exhaust at intervals with standard vacuum sampling bottles and analyze them back at the lab. However, if there are condensible species it won't be an easy operation to do accurately.
A slightly less specific approach might be to use FTIR with a long-path-length gas cell. Portability is still not good, however, and there is some risk to the equipment with a crude exhaust product.
John Twilley
-----Original Message-----
>From: Ann Feuerbach <[log in to unmask]>
>Sent: Aug 3, 2006 3:57 PM
>To: [log in to unmask]
>Subject: detecting and measuring gas emissions
>
>Hi all,
>Can anyone suggest a portable instrument for detecting the type and amount of gas (particularly hydrocarbons) emitted from a reconstructed furnace? Thanks!
>All the best,
>Ann Feuerbach
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