acrylic acid (AA) and meth acrylicate (MMA) [June 23, 2004]

[admin]

By Anonymous on Wednesday, June 23, 2004 - 02:28 am:

I am trying to find a HPLC method where I can both analyzed or seperate acrylic acid (AA) and methyl methacrylate (MMA). I now analyzed AA and MMA with GC-FID and the results are not repeatable en reproducable enough. Is there anayone who can help. Thanks


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By Anonymous on Wednesday, June 23, 2004 - 08:02 am:

What column are you using on GC. We do those compounds using FFAP phase on GC and it works OK. If you want to try HPLC you could use a Prevail organic acids column from Alltech with a mobile phase of 25mM KH2PO4 ph 2.5.
John

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By Anonymous on Thursday, June 24, 2004 - 11:59 pm:

Thanks for your help and message Anonymous on Wednesday, June 23, 2004 - 08:02 am:

We are also using a FFAP column for the analysis of AA and MMA buth the problem is that our samples are not stable at high injection temperature. The amount we get is not really the free amount of AA and MMA but also AA and MMA who splits from our samples. We tried with lower injection temperature that helps a lot and we get numbers who are repeatable en reproducable.
But we are trying to solve this problem with HPLC and I am thinking we are the first who are tryijng to do this

[admin]

By Anonymous on Wednesday, June 23, 2004 - 12:15 pm:

maybe this will help

http://www.gls.co.jp/application/INERTS ... LC-D14.htm

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By maris on Wednesday, June 23, 2004 - 01:16 pm:

see also :
http://www.hamiltoncomp.com/cgi-shl/pro ... applist248

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By bill tindall on Wednesday, June 23, 2004 - 08:11 pm:

should be very easily done with any of the so called "aqueous" compatible columns, for example ES Industries Aquasep, and a mobile phase of 0.1 to 0.2% phosphoric acid in water and acetonitrile and low wavelength detection.
On the other hand it is very easily done by gc with the right column.