Li Yang, Han Shitong, Li Zhanguo, Liu Zhen, Liang Longhui, Yan Keping, Zhu Anna
State Key Laboratory of NBC Protection for Civilian, Beijing 102205, People's Republic of China.
State Key Laboratory of NBC Protection for Civilian, Beijing 102205, People's Republic of China.
J Hazard Mater. 2022 Feb 15;424(Pt B):127536. doi: 10.1016/j.jhazmat.2021.127536. Epub 2021 Oct 19.
Atmospheric pressure plasma jet (APPJ) were used to decontaminate the surface's 2-Chloroethyl ethyl sulfide (2-CEES), a kind of sulfur mustard (HD) simulant. The power of the APPJ device didn't exceed 7.77 W. Helium APPJ was easier to generate plasma jet than argon APPJ. The treated nude mouse skin surface's temperature slowly reached 30.4 °C and no obvious lesions in the dermis and skin appendages after 15 min treatment. Compared with argon APPJ, the helium APPJ produced more ·OH and the maximum concentration of ·OH was 3.748 × 10 mol/L. Attributed to the low density and more ·OH content, the helium APPJ had a better decontamination effect. With a maximum voltage of 7 kV and a helium flow rate of 4 L/min, 2-CEES (4.53 mg/cm) can be completely decontaminated in 2.5 min, and no gaseous 2-CEES was detected. The detection of the 2-Hydroxyethyl ethyl sulfide proved the role of ·OH in the reaction system. During the reaction, 2-Chloroethyl ethyl sulfoxide and 2-Chloroethyl ethyl sulfone were also detected. The plasma jet could reduce the toxicity by destroying the parent molecule (2-CEES) in a short time, but it took more time to eliminate the intermediate products. No relevant intermediate products were detected in the gaseous, ensured the safety of personnel operating in open spaces.
大气压等离子体射流（APPJ）被用于对一种硫芥模拟物2-氯乙基乙基硫醚（2-CEES）的表面进行去污处理。APPJ装置的功率不超过7.77瓦。氦气APPJ比氩气APPJ更容易产生等离子体射流。处理15分钟后，裸鼠皮肤表面温度缓慢升至30.4℃，真皮和皮肤附属器无明显损伤。与氩气APPJ相比，氦气APPJ产生的·OH更多，·OH的最大浓度为3.748×10摩尔/升。由于密度低且·OH含量高，氦气APPJ具有更好的去污效果。在最大电压7千伏、氦气流速4升/分钟的条件下，2-CEES（4.53毫克/平方厘米）可在2.5分钟内被完全去污，未检测到气态2-CEES。2-羟乙基乙基硫醚的检测证明了·OH在反应体系中的作用。反应过程中还检测到了2-氯乙基乙基亚砜和2-氯乙基乙基砜。等离子体射流可通过在短时间内破坏母体分子（2-CEES）来降低毒性，但消除中间产物需要更多时间。在气态中未检测到相关中间产物，确保了在开放空间中操作人员的安全。
