Total cyanide may not always be free but it is often available; cyanide methods and interferences regurgitated

Collaborative Efforts to Improve Environmental Monitoring
Oral Presentation

Prepared by W. Lipps
Shimadzu Scientfic Instruments, 7102 Riverwood Dr, Columbia, Maryland, 21046, United States


Contact Information: wclipps@shimadzu.com; 410-910-0802


ABSTRACT

There are numerous methods for the various forms of cyanide. What form to measure, why to measure it, and what it actually is can be confusing. Also, cyanide has numerous interferences including creation or destruction of cyanide in the sample bottle, during sample preparation, and during analysis. Some of these interferences are method specific, others are not. This presentation covers EPA approved cyanide methods, what cyanide compounds each method is looking for and actually detects, and potential interferences. Suggesteions for overcoming interferences will be presented.