Identification and toxicological evaluation of cyclic sulfonium ion degradation products of sulphur mustard
2020
Hemström, P. | Holmgren, K.H. | Hammarström, B.E. | Larsson, A. | Östin, A.
In the aftermath of WWII large amount seized German chemical munitions were dumped in the Baltic Sea by Allied forces. In this work, we have compared the chemical content of the solidified blocks of dumped WWII mustard gas collected from the Baltic Sea with solid precipitate from stored mustard gas, known as heel. We have identified the same cyclic sulfonium ions in both samples. In assessing the environmental and toxicological impact of dumped sulphur mustard munitions on the world's oceans the potential risk posed by cyclic sulphur mustard salts have so far not been incorporated.The toxicity of 1-(2-chloroethyl)-1,4-dithiane and its hydrolysis product 1-(2-hydroxyethyl)- 1,4-dithiane was evaluated using three different cell lines. Their effect on released pro-inflammatory cytokines was also measured. The toxicity tests showed low toxicity and low pro-inflammatory response and we therefore conclude that the environmental threat posed by these compounds is low.
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