Find methods for your needs

AN227 Determination of Total Cyanide in Municipal Wastewater Be the first to rate this application


In this Application Note, we describe an ion exclusion chromatography (ICE) method with pulsed amperometric detection (PAD) using a Pt disposable working electrode and an optimized waveform to determine total cyanide in drinking and wastewater samples. The samples are acid distilled, trapped in 1 M NaOH, and diluted to 250 mM NaOH prior to analyses using the EPA-approved MICRO DIST™ sample preparation system. This ICE-PAD method has the advantages of eluting cyanide before sulfide with Rs > 3, and excluding other interferences, such as chloride and sulfate that typically interfere in ion exchange methods resulting in a more sensitive and accurate method. Analytes are also selectively detected by PAD while other compounds remain undetected. This ICE-PAD method provides a fast, reliable, sensitive, and selective method to directly determine µg/L to sub- µg/L concentrations of total cyanide in wastewater. In this Application Note, we demonstrate the linearity, detection limit of 0.27 µg/L, accuracy, and precision for the determination of total cyanide in drinking water and wastewater samples using the MICRO DIST system and ICE-PAD.
Market: Environmental
Matrix: Municipal wastewater
Uploaded on 7/23/2010.

For Research Use Only. Not for use in diagnostic procedures.