CNSolution™ is a high-throughput system for cyanide measurement. Incorporating a single- or dual-channel analyzer, WinFLOW™ Software, and a random-access autosampler, the CNSolution uses a gas diffusion ligand-exchange procedure to measure available cyanide or cyanide amenable to chlorination (CATC) species in 90 seconds. Ultraviolet irradiation of the sample can be added to measure total cyanide every 2 minutes. Available, CATC, and total cyanide can be measured down to 2 µg/L (ppb). Distillation is not required.
The CNSolution operation involves the initial injection of the sample into a carrier stream. Once injected, the sample is segmented and acidified to release hydrogen cyanide (HCN), which passes through a hydrophobic membrane. The HCN is absorbed into a basic acceptor solution and directed through a low–dead volume flowcell where the cyanide is measured amperometrically at a silver working electrode. The signal generated by the detector is sent to the WinFLOW software package for analysis and final-report generation.
The measurement system complies with all USEPA Method OIA-1677 requirements.
OI Analytical
www.CLPmag.com
