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Enhancement of conductometric detection of weak acids in ion chromatography |
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| Authors: | Arety Caliamanis Malcolm J McCormick Peter D Carpenter |
| Institution: | Department of Applied Chemistry, RMIT University, City Campus, GPO Box 2476V, Melbourne, Victoria 3001, Australia |
| Abstract: | Anions of weak acids can represent a problem when determined via chemically suppressed ion chromatography as the acids can be weakly ionised, giving low conductivity and hence low sensitivity. Previous work showed that converting some weak acids back to their sodium salts, using a second micromembrane suppressor, greatly enhanced conductivity and thus sensitivity. This paper will discuss further work in optimising the conversion for boric acid by using sodium salts of EDTA and the mechanisms involved. |
| Keywords: | Boric acid Weak acids |
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