Ion Chromatographic Determination of Soluble Anions Present in Coal Fly Ash Leachates

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Abstract
The advent of ion chromatography has provided an extremely useful tool for the rapid, precise and sensitive determination of inorganic anions. This capability can be put to excellent use in the determination of soluble anions associated with coal fly ash. Methodology applicable to determination of F−, C1−, CO:−2 3 NO− 3 and SO2- 4 is described. Both the element solution concentration and pump pressures were varied to achieve optimal conditions in terms of resolution and speed of analysis. The precision of this method of analysis was determined to be ± 3% and the accuracy ± 5%. Replicate analysis of these coal fly ash leachate samples varied by less than 3%. In all cases% relative standard deviations were better than 3%.