Abstract
This work presents a new method for generating a BrCl solution, starting from the commercially available dibromodimethylhydantoin (DBDMH). This method is notable due to the straightforward, safe and clean performance, being based on a simple addition of DBDMH into aqueous HCl. The whole procedure is finished in about 20 min. An advantage of the proposed method is avoiding of tedious reagents pre-cleaning by prolonged thermal treatment, spontaneous overheating and excessive vapor evolution. The resulting BrCl stabilization reagent is low enough in mercury content to be directly used in trace mercury analysis. A thorough study of the BrCl solutions prepared by this method showed that they conform in all respects to US EPA 1631e/2002 requirements.
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Funding
This work was supported by the Czech Science Foundation, project number GACR 20-14292 S, and by the internal research program of the Institute of Geology of the Czech Academy of Sciences in Prague No. RVO 67985831.
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Rohovec, J., Navrátil, T. & Nováková, T. An Innovative Method to Generate Bromine Monochloride for Trace Hg Analysis. Bull Environ Contam Toxicol 111, 55 (2023). https://doi.org/10.1007/s00128-023-03815-4
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DOI: https://doi.org/10.1007/s00128-023-03815-4