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Dimethylated thioarsenicals such as dimethylmonothioarsinic acid (DMMTA V ) and dimethyldithioarsinic acid (DMDTA V ), which are produced by the metabolic pathway of dimethylarsinic acid (DMA V ) thiolation, have been recently found in the environment as well as human organs. DMMTA V and DMDTA V can be quantified to determine the ecological effects of dimethylated thioarsenicals and their stability in environmental media. The synthesis method for these compounds is unstandardized, making replicating previous studies challenging. Furthermore, there is a lack of information about storage techniques, including storage of compounds without species transformation. Moreover, because only limited information about synthesis methods is available, there may be experimental difficulties in synthesizing standard chemicals and performing quantitative analysis. The protocol presented herein provides a practically modified synthesis method for the dimethylated thioarsenicals, DMMTA V and DMDTA V , and will help in the quantification of species separation analysis using high performance liquid chromatography in conjunction with inductively coupled plasma mass spectrometry (HPLC-ICP-MS). The experimental steps of this procedure were modified by focusing on the preparation of chemical reagents, filtration methods, and storage.

journal of visualized experiments

Preparation of DMMTA&lt;sup&gt;V&lt;/sup&gt; and DMDTA&lt;sup&gt;V&lt;/sup&gt; Using DMA&lt;sup&gt;V&lt;/sup&gt; for Environmental Applications: Synthesis, Purification, and Confirmation