>Date: Fri, 21 Mar 2003 15:57:51 -0700
>From: Kenner Christensen <kenner_at_u.arizona.edu>
>Subject: Re: Carbob-13 spectrum of CO2
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>To: Peter Lundberg <peter.lundberg_at_imv.liu.se>
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> Sorry I didn't immediately reply. I can't lay my hands on
>the paper now but look in J. Phys. Chem.,78, 1971(1974). We could
>easily see polarized CO2 in hot trichloroethylene. I suspect that
>CO2 is sufficiently soluble in cold acetone, as in an acetone-dry
>ice bath, but the T1 is probably very long. To my surprise the 14N
>signal of N2 dissolved in CD2Cl2 is quite easy to observe.
> Kenner
>
>At 01:40 PM 3/21/03 +0100, you wrote:
>>>Hi all,
>>>
>>>no it's no bad joke.
>>>A few weeks ago I got a request for the C-13 spectrum
>>>of carbon dioxide. Like you I thought this is a confusion and maybe
>>>the IR sectrum was wanted.
>>>But:
>>>
>>>> Dear Rainer
>>>> Thank you for the e-mail you sent to my colleague Anita Lockyer
>>>> regarding NMR for CO2. It is indeed the C-13 spectrum that we require.
>>>> I realise this will not show much but we need a copy to submit as part
>>>> of an EUdata package for the Biocidal Products Directive.
>>>
>>>I have no idea, where to find a C-13 spectrum of carbon
>>>dioxide. Do you have an idea?
>>
>>Hi Rainer,
>>
>>As long as they don't ask you for a 12C NMR spectrum, there is at
>>least a chance...
>>
>>What is the aqueous solubility of CO2(g) compared to say H2(g) or
>>N2(g)? The latter two are relatively easy to observe (in aqueous
>>solution) in NMR spectra. CO2 is probably much more difficult due
>>to its lower receptivity, but I believe it should be fairly soluble
>>in water. If a spectrum of 13C enriched sodium carbonate is
>>acceptable, the detection would be a lot easier. Low temperature
>>would probably be favourable in order to observe dissolved CO2.
>>
>>73, Peter
>>--
>> _at_ _at_
>> ..
>>==================================================ooOO==========OOoo======
>>| Peter Lundberg Ph: (+46 13) 22 27 90 |
>>| MR-Unit Fax: (+46 13) 22 27 92 (alt 22 47 49) |
>>| Dept of Radiation Physics Email: PeterL_at_raf.liu.se |
>>| University of Linkoping |
>>| S-581 85 Linkoping Efax: PeterLundberg_at_f013222792.fax.sunet.se |
>>| Sweden www: http://www.imv.liu.se/radiofysik/ |
>>==========================================================================
>>() "To a poet nothing is useless." (SJ) ooOO OOoo
--
_at_ _at_
..
==================================================ooOO==========OOoo======
| Peter Lundberg Ph: (+46 13) 22 27 90 |
| MR-Unit Fax: (+46 13) 22 27 92 (alt 22 47 49) |
| Dept of Radiation Physics Email: PeterL_at_raf.liu.se |
| University of Linkoping |
| S-581 85 Linkoping Efax: PeterLundberg_at_f013222792.fax.sunet.se |
| Sweden www: http://www.imv.liu.se/radiofysik/ |
==========================================================================
() "To a poet nothing is useless." (SJ) ooOO OOoo
Received on Mon Mar 24 2003 - 17:34:01 MST