An Innovative Method to Generate Bromine Monochloride for Trace Hg Analysis

0576530 - GLÚ 2024 RIV DE eng J - Journal Article
Rohovec, Jan - Navrátil, Tomáš - Nováková, Tereza
An Innovative Method to Generate Bromine Monochloride for Trace Hg Analysis.
Bulletin of Environmental Contamination and Toxicology. Roč. 111, č. 4 (2023), č. článku 55. ISSN 0007-4861. E-ISSN 1432-0800
R&D Projects: GA ČR(CZ) GA20-14292S
Institutional support: RVO:67985831
Keywords : Bromine monochloride (BrCl) * Dibromodimethylhydantoin * Mercury stabilization reagent * Trace mercury analysis * Sample preservation * Sample storage
OECD category: Analytical chemistry
Impact factor: 2.7, year: 2022
Method of publishing: Limited access
https://link.springer.com/article/10.1007/s00128-023-03815-4

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.
Permanent Link: https://hdl.handle.net/11104/0346088