Experimental Study on the Degradation of Acaricides on the Surface of Kumquat Cuimi by Nonthermal Air Plasma

Nonthermal air plasma, which can be generated by discharge, contains large amounts of reactive oxygen species (ROS), nitrogen (RNS) and high-energy particles. The ROS RNS have strong oxidizing properties, the particles break chemical bonds in organic compounds, a process used to degrade matter such as pesticides. In present study, effects nonthermal plasma on degradation several pesticides were investigated. An processing system was designed constructed produce five commonly acaricides, namely, avermectin, bifenazate, spirodiclofen, etoxazole, lufenuron, during production kumquat cuimi. experimental results showed that could all acaricides surface cuimi effectively. After 20 min treatment, residues etoxazole lufenuron reduced 80.67%, 79.52%, 62.40%, 48.93% 23.11%, respectively. Further analysis indicated primary bonds, hydrophobicity, pH value plasma-activated water affect efficiency pesticide degradation.