Chromatography Forum

Hi ,

Here i am working in membrane separations lab , here my work is to separate the acetic acid(very low content of acetic acid 1.5 wt%) from water by using pervaporation , so i need to measure their concentrations (both feed and permeate)in the water , so i am looking forward to using the Gas Chromatography that is already in my lab , but at this juncture i am quite unaware of this GC handling , what are the std conditions should we have to follow for this acetic acid water mixture , what type of column should i have to use ? i remind you once again that here i am going to measure 1-5wt% of acetic acid in water , so pls tell me what are the pros and cons , and is there any other methods available to measure this concentration effectively , I really obligued to you if anybody send me reply to this requistition , i am desperately looking forward to see the reply...
bye

You will need to sample the mixture you wish to measure and transport it to a GC having a vapor sampling valve.

A glass lined sample loop and transport line must be used.

You should inject the sample into a capillary or packed column containing FFAP or SP-1000 phase. Carbopack B is an excellent support for your application if a packed column is used, fused silica lined SS or glass column is required.

A TCD or helium ionization detector is also required in the GC.

Any questions?? Please contact Technical Service at Supelco.

800-359-3041

I really Than Q for your Immmediate reply , i am about to do my work , i will again mail you ....thanking you sir