Water/Wastewater
CNSolutionTM Cyanide Analyzer
Feb 28 2008
The modular design allows the CNSolution to be configured to analyze free cyanide, available cyanide, weak acid dissociable (WAD) cyanide,
cyanide amenable to chlorination (CATC), and total cyanide. Cyanide analysis can be performed using the analytical technique and method appropriate for a particular application and regulatory requirements.
Cyanide analysis methods employ different techniques for breaking down
metal-cyanide complexes. Older methods typically involve a preliminary 2 hour acid distillation step.
A drawback of acid distillation is that accurate determination of cyanide is not possible if sulfur-species are present in the sample. Newer methods eliminate the acid distillation step, utilizing a ligand-exchange sample pretreatment step or an in-line UV digestion step to breakdown cyanide complexes for analysis.
These non-distillation techniques allow accurate cyanide determination in the presence of sulfur-species interferences, and provide results in minutes versus hours required when a method with an acid distillation step is used.
The CNSolution measures free, available and WAD cyanide using a ligandexchange, gas diffusion separation technique with amperometric detection.
The CNSolution measures total cyanide using an in-line UV digestion, gas
diffusion separation technique with amperometric detection.
In cases where a laboratory must use a regulatory method involving acid distillation and colorimetric analysis, the CNSolution can be equipped with a photometric detector.
USEPA Method OIA-1677 and ASTM Method 6888-04 for available/WAD cyanide, and USEPA Method 335.4 and ISO-14403:2002 for total cyanide are some of the analytical methods that can be performed using the CNSolution cyanide analyzer.
Digital Edition
AET 28.2 April/May 2024
May 2024
Business News - Teledyne Marine expands with the acquisition of Valeport - Signal partners with gas analysis experts in Korea Air Monitoring - Continuous Fine Particulate Emission Monitor...
View all digital editions
Events
Jul 10 2024 Birmingham, UK
Jul 21 2024 Cape Town, South Africa
Australasian Waste & Recycling Expo
Jul 24 2024 Sydney, Australia
Jul 30 2024 Jakarta, Indonesia
China Energy Summit & Exhibition
Jul 31 2024 Beijing, China