摘要
低温常压等离子体产生的丰富的化学活性物种(活性氧和氮基团)在生物医学应用(如伤口消毒和愈合)上有着很高的需求,尤其是活性氧基团(如O(3P)、O(5P)、OH*、O2-、1O2、O、O3和H2O2)有着很强的杀菌能力。为此,采用了一种针-环介质阻挡放电(DBD)结构的Ar/H2O等离子体射流作用于生理盐水中生成H2O2,并对水蒸气体积分数、等离子体处理时间及等离子体处理后储存时间对生理盐水中H2O2浓度的影响进行了相应的研究。研究结果表明:在相同处理时间的情况下,生理盐水中H2O2浓度随着水蒸气体积分数的增大而出现先增后减的情况,而H2O2生成率和能量利用率则受水蒸气体积分数影响不大;在相同水蒸气体积分数的情况下,较长的等离子体处理时间将会导致较高的H2O2浓度、生成率和能量利用率;等离子体处理后的生理盐水中的H2O2在40 min时间内可以相对稳定地存在,显示了H2O2在等离子体药学上应用的可能性。
The abundant chemically reactive species（reactive oxygen and nitrogen species） generated by stable low-temperature atmospheric plasmas are highly desirable for biomedical applications such as wound disinfection and healing. In particular, reactive oxygen species（e.g. O（3P）, O（5P）, OH＊, O2-, 1O2, O, O3 and H2O2） are known to be bactericidal. Hence, we adopted needle-ring DBD Ar/H2 O plasma jet to produce H2O2 in saline solution, and investigated the influence of water vapor concentration, plasma treatment time, and storage time on the H2O2 production. It is shown that, under the same treatment time, increasing water vapor concentration will increase the H2O2 concentration in saline solution first then decrease, but it slightly affects the H2O2 production rate and energy efficiency. Meanwhile, under the same water vapor concentration, increasing plasma treatment time will raise H2O2 concentration, production rate, and energy efficiency. The H2O2 concentration in saline solution can maintain for more than 40 minutes after plasma treatment, which indicates possible applications in plasma medicine.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2014年第12期3780-3785,共6页
High Voltage Engineering
基金
国家自然科学基金青年科学基(51207027)
教育部留学回国人员科研启动基金~~
