April 2014 - EZkem

Gas Diffusion Methods – The Benefits Are Stacking Up

The U.S. EPA and ASTM cyanide analysis methods based upon gas diffusion amperometry do not require a preliminary acid distillation step and are now approved as amendments to 40 CFR 136 Clean Water Act Methods on their website as published in the 2012 Method Update Rules (MUR) in the Federal Register. These methods were specifically [...]

Testing for Total Cyanide Using Gas Diffusion

ASTM D7511-09 Standard Test Method for Total Cyanide by Segmented Flow Injection Analysis, In-Line Ultraviolet Digestion and Amperometric Detection This is a new standard test method that was developed by ASTM Committee D19 on Water to determine the concentration of total cyanide in drinking and surface waters, domestic wastewater, and industrial wastewater. Cyanide ion (CN-), hydrogen [...]