you can use GC  with a proper column to measure acetate as a component in any solution. To find the column you can search it online in your GC brand website or  contact your GC supplier. I am not sure about ur target for measurement, but perhaps u can use COD analysis as a cost effective method if acetate is the only effective component in ur reactor too.

Dear Dr.Tahereh Jafary,

First of all, thank you so much for your information.

Acetate is the only effective component in our reactor, so i will try to use Chemical oxygen demand (COD)  analysis , since it is cost effective method compare with GC.

Dear Dr. could you give me some information about COD analysis ? How to measure it? How to calculate COD ?

you can check "Standard Methods for the Examination of Water and Wastewater" for COD analysis method, but you can order the vial with COD reagents that will be easier as long as you dont need to prepare reagents by your self. But still study the structure in standard method  for safety precautions. I think the structure is provided when you order vials. you can take a look at this file too; http://site.iugaza.edu.ps/t77328/files/COD.pdf. Good luck

I would recommend that you should not try to use methods like COD. I would suggest that if you have an access to ULC, it would be far better that using COD. This is because acetate is already there in the reaction mixture. Alternately, GC with a simple porapac-Q or porapac -R (to some extent) would give you better results with TCD (or still better ECD).

If to think about acetate measurements with GC I would recommend, then, to use quite simple normal FID. It has quite nice sensitivity. If you measure acetate in aqueous phase then you need to consider following:

1) temperature of the column should be more than 100C (to bring water and acetate into gaseous phase)

2) sample should be acidified (to bring acetate (ion) to acetic acid state that is volatile)

3) GC column better be out of glass (steel column is making tails)