whereas others focus on dicarboxylic and/or ketoacids. , , Detection limits are again at low /Ag/l concentrations. In general, GCs have higher separation efficiencies than ICs and coelution is therefore not as common in GC as in AEC. In addition, extracts may be measured by GC/MS, thus confirming peak identity. With one exception,72 AEC applications for rain do not discuss a potential coelution of organic acids although other independent methods would be available for confirmation.

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