• U.S. EPA Cyanide Analysis Methods

Analytical instrumentation

U.S. EPA Cyanide Analysis Methods

On August 6th, 2010 the U.S. EPA Administrator signed a Methods Update Rule (MUR) proposing new test procedures for analysis of pollutants under the Clean Water Act. Six ASTM Methods covering sampling, preservation and analysis of free, available, and total cyanide were included in the MUR.

Labs will now be able to analyse NPDES wastewater samples for total cyanide without a preliminary 2 hour acid distillation step by following ASTM Method D 7511-09. The CNSolution™ Cyanide Analyser from OI Analytical
(USA) uses in-line UV digestion to dissociate metal-cyanide complexes and measure total cyanide in minutes by ASTM D 7511-09.


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