Institute of Geology of the Czech Academy of Sciences, Rozvojová 269, Prague 6, 165 00, Czech Republic.
Bull Environ Contam Toxicol. 2023 Oct 17;111(4):55. doi: 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.
这项工作提出了一种新的方法来生成 BrCl 溶液，从市售的二溴二甲基海因（DBDMH）开始。这种方法的显著特点是基于 DBDMH 简单地加入到盐酸水溶液中，具有直接、安全和清洁的性能。整个过程在大约 20 分钟内完成。与该方法相关的一个优点是避免了繁琐的试剂预处理，例如长时间的热处理、自发过热和过度的蒸汽挥发。所得到的 BrCl 稳定剂的汞含量足够低，可以直接用于痕量汞分析。对通过该方法制备的 BrCl 溶液进行了全面研究，结果表明它们在各个方面都符合美国环保署 1631e/2002 要求。
