常压等离子体射流去除水中糖皮质激素污染物

搭建射流介质阻挡放电反应器，对常压等离子体射流技术降解水中代表性糖皮质激素氢化可的松（HC）进行了研究.考察了放电功率、空气流量、溶液初始pH值、放电时间等因素对HC降解效果的影响.结果表明，HC的去除率随放电功率增大和放电时间延长而增加；溶液初始pH值、通入空气流量等因素对HC处理效果也有很大影响.在初始浓度为0.138mmol/L，放电功率为49.7W，气流量为4L/min的实验条件下，在本反应器中放电处理120min后HC的去除率可达98%.本文使用了不同自由基抑制剂研究了活性氧自由基（ROS）在HC降解过程中的作用，并通过发射光谱（OES）观测了放电过程中产生的自由基种类.研究结果对常压等离子技术去除有机污染物的发展有一定的参考价值.

Degradation of glucocorticoids in water by atmospheric pressure plasma jet

Degradation of glucocorticoids(GCs) in water by plasma jet technology was studied with hydrocortisone (HC) as the representative. The results showed that the removal efficiency of HC increased with the increase of discharge power and discharge time. The initial solution pH and air flow also have significant impacts on HC removal. At discharge power of 49.7W, gas flow rate of 4L/min, initial pH of 6.5, and initial concentration of 0.138mmol/L, the HC removal efficiency reached 98% after 120min. The functional radicals during discharge were detected by Optical Emission Spectrum (OES). Effects of radical scavengers on HC degradation were investigated to explore the contributions of various reactive oxygen species (ROS) during plasma treatment. The research results could contribute to the development of jet plasma technology in water treatment.