The EZkem blog is your go-to resource for laboratories in the spectroscopy fields — including flow analysis and cyanide analysis.
Nitrate Contamination Reduces Cadmium Coil Efficiency
Nitrate Contamination: A very real and very well documented effect in various laboratories is the loss of reduction efficiency in cadmium coils caused by nitrate contamination in the ammonium chloride. Nitrate contamination will cause a steady continuous reaction in a cadmium reduction coil during a run. Depending on the level of contamination, this condition can [...]
Segmented Flow Analysis and the Cadmium Coil
Two things to consider when using a cadmium coil in a segmented flow analysis system: Pure gas & checking the system for leaks. Pure gas is vital when it comes to the cadmium coil, any impurities in the gas or leaks in the SFA system itself will significantly reduce a cadmium coil's reductive efficiency. In [...]
Cadmium Coil Activation
Get the most life out of your cadmium reduction coil... The Proper Technique to Activate a Cadmium Reduction Coil In order to create a good copper complex it is important to use acid to clean and prepare the surface of the cadmium. Cadmium is very susceptible to destruction if the acid concentration is too high [...]
Everything You Wanted to Know About the Cadmium Reduction Coil
An Overview of Caring For and Using a Cadmium Reduction Coil in the Determination of Nitrate. Over the years, we've fielded a lot of questions from clients about how to operate and get the most out of their cadmium coils. Cadmium coils are fairly complicated and there are definitely areas for problems to occur. Sometimes [...]
Run Gas Diffusion on Autoanalyzers Effortlessly
Sample line tubing and connections need more attention with Gas Diffusion Chemistries The gas diffusion methods for analyzing Ammonia, Total Keldahl Nitrogen and the various species of Cyanide have produced a few specific problems not normally seen on classic colorimetric chemistries run on an autoanalyzer. Due to the precise nature of the gas passing across [...]
Teflon Tubing vs Glass on FIA and SFA Autoanalyzers
Further Discussions Our last blog post about how much better Teflon is than glass resulted in extensive responses from many different users. Some users were in agreement, some were thankful for the facts regarding how much better the physical properties of Teflon are over glass and others were somewhat confused. The main confusion has to [...]