Abstract
During the replicate analysis of melamine and cyanuric acid by LC-ESI MS/MS for the method development, recurring cyanuric acid contamination was observed. The high concentration (6,950 mg/kg) of cyanuric acid was found in the strong alkali detergent used in a glassware washing machine. However, only small concentration of cyanuric acid (0.002–0.004 mg/kg) was detected in the glassware washed with the above alkali detergent. The major contamination source of cyanuric acid was some specific lot of acetonitrile (0.093 mg/kg) that increased the background level of the ion chromatogram.
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Kim, H., Roh, J.S. & Oh, CH. Investigation of the Cyanuric Acid Contamination Caused by Acetonitrile and Alkali Detergent for the LC-ESI MS/MS Analysis. Bull Environ Contam Toxicol 85, 165–169 (2010). https://doi.org/10.1007/s00128-010-0052-7
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DOI: https://doi.org/10.1007/s00128-010-0052-7