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830

Chloride - Flow Injection Analyzer Method

Solubles: Cl

Summary

This method measures the amount of chloride in water samples using flow injection analysis.  Thiocyanate ions are liberated from mercuric thiocyanate in the presence of chloride with the formation of mercuric chloride. In the presence of ferric ion, free thiocyanate ions form highly colored ferric thiocyanate. The absorbance of ferric thiocyanate is measured at 480 nm and is proportional to the chloride concentration.  The method has a detection limit of 0.1 meq/L.

Pruefer, A.  2007. Determination of Chloride by Flow Injection Analysis Colorimetry. QuikChem Method 10-117-07-1-B.  Lachat Instruments, Milwaukee, WI.

Diamond, D. 1994. Determination of Chloride by Flow Injection Analysis Colorimetry. QuikChem Method 10-117-07-1-B. Lachat Instruments, Milwaukee, WI.

U. S. Environmental Protection Agency, Methods for Chemical Analysis of Water and Wastes, EPA-600/4-79-020, Revised March 1983, Method 325.2.