Evaluation of Commercially Available Cyanide Test Kits against Various Matrices
Technical Report,01 Mar 2015,01 Sep 2015
Army Edgewood Chemical Biological Center Aberdeen Proving Ground United States
Pagination or Media Count:
Five commercially available cyanide-detection test kits or strips were selected for evaluation based upon a premarket survey Quantofix test strips, Cyantesmo test paper, and Visocolor ECO test kits Macherey-Nagel Dren, Germany eXact test strips Industrial Test Systems Rock Hill, SC and MQuant test strips EMD Millipore Billerica, MA. Kits were tested against spiked matrices of flour, powdered sugar, and talcum powder with potassium cyanide at concentrations of 0 to 1 weight-to-weight ratio. Cyantesmo paper and Visocolor ECO test kits yielded the most consistent results across all concentration ranges, even for sample sizes as low as 5 mg. Based upon these results and the mechanics of performing the analyses, Cyantesmo paper was selected for further evaluation in a second phase of testing. Cyantesmo paper was tested against 15 matrices, including baking soda, boric acid, brewers yeast, chalk dust, chitin, coffee powder instant coffee, cornstarch, drywall dust, flour, kaolin, gamma-aminobutyric acid, L-glutamic acid, powdered coffee creamer, powdered milk, and talcum powder spiked with potassium cyanide at concentrations of 0 to 1 weight-to-weight ratio. In the final results, Cyantesmo paper successfully detected the presence of 0.1 cyanide in 50 mg sample sizes however, at the 5 mg sample size, the test was unreliable.