Originally Posted By: phinsperger
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http://www.new-technologies.org/ECT/Other/InfraredGasSensor.htm
Originally Posted By: phinsperger
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Originally Posted By: Jay Moge
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Originally Posted By: Caoimh?n P. Connell
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Originally Posted By: phinsperger
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Caoimh?n P. Connell wrote: |
Hello Paul:
Refinements in IR optics notwithstanding, IRs are still considered to be qualitative and not quantitative or even semiquantitative. The reason is that IR spectra are fraught with overlapping signatures and the resulting ID and measurement by the instrument consists of ?good guesses? and in many cases, even ?damn good guesses,? but they remain guesses nonetheless. Field IR specs are great tools when used within the limits for which they were designed, but could be dangerous if used with overconfidence and if used with disregard for their limitations. Personally, I like field IRs for many applications, and I've use them extensively? for example, monitoring the air while exhuming buried gasoline tanks. In an application such as this, one already knows the general profile of the source hydrocarbons and uncertainties about actual identifications are not particularly important. But one would not be particularly wise to use an IR spec to attempt to definitively characterize a completely unknown gaseous component. For that, one would still need to perform proper air monitoring. Just a thought? Cheers, Caoimh?n P. Connell Forensic Industrial Hygienist www.forensic-applications.com (The opinions expressed here are exclusively my personal opinions and do not necessarily reflect my professional opinion, opinion of my employer, agency, peers, or professional affiliates. The above post is for information only and does not reflect professional advice and is not intended to supercede the professional advice of others.) AMDG |
Originally Posted By: Caoimh?n P. Connell
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Originally Posted By: kwilliams
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Caoimh?n P. Connell wrote: |
I carry as a cop on meth-lab raids (Of course, in meth-labs, my main concern is airborne lead, if you get my drift?) |
Originally Posted By: lkage
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Jay Moge wrote: |
i feel smarter, thanx ![icon_cool.gif](upload://oPnLkqdJc33Dyf2uA3TQwRkfhwd.gif) |
Originally Posted By: Jay Moge
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Originally Posted By: lkage
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Jay Moge wrote: |
Larry.
to be totaly honest, if someones post is longer than my screen, has 12 letter words and i get lost in the first sentence, i usualy skip it and read the next one. that way i can still feel smart, even if i'm fooling myself, i damn good at it. ![icon_cool.gif](upload://oPnLkqdJc33Dyf2uA3TQwRkfhwd.gif) |
Originally Posted By: rcooke
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Jay Moge wrote: |
Larry.
to be totaly honest, if someones post is longer than my screen, has 12 letter words and i get lost in the first sentence, i usualy skip it and read the next one. that way i can still feel smart, even if i'm fooling myself, i damn good at it. ![icon_cool.gif](upload://oPnLkqdJc33Dyf2uA3TQwRkfhwd.gif) |
Originally Posted By: Caoimh?n P. Connell
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kwilliams wrote: | ||
Mr Connell, You go with the police on the raids ? ![icon_eek.gif](upload://yuxgmvDDEGIQPAyP9sRnK0D0CCY.gif) |