Treatment of Omethoate on Edible Wolfberry by Atmospheric Pressure Air Surface Dielectric Barrier Discharge

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• 作者：Zichao Zong ; Renwu Zhou ; Dongping Liu ; Ying Song and Jinhai Niu
• 关键词：atmospheric pressure plasma ; discharge ; edible wolfberry ; gas chromatography and mass spectrometry
• 刊名：Plasma Processes and Polymers
• 出版年：2016
• 出版时间：April 2016
• 年：2016
• 卷：13
• 期：4
• 页码：402-409
• 全文大小：1250K
• ISSN：1612-8869

文摘

In this study, the effect of atmospheric-pressure air surface dielectric barrier discharge (SDBD) on the degradation of Omethoate smeared edible wolfberry was investigated by gas chromatography and mass spectrometry (GC–MS). The degradation efficiency of SDBD on Omethoate is shown to be strongly dependent on the discharge voltage and plasma treatment time. The plasma-induced degradation mechanisms were studied through identification of the intermediates or by-products generated during SDBD plasma treatment. The results show that the degradation efficiency may be higher than 99% under the optimum discharge conditions, i.e., at the applied voltage of 10 kV and the treatment time of 30 min. It is concluded that the atmospheric-pressure SDBD plasma may degrade pesticide residue into nontoxic species (such as PO₄³⁻, H₂O, SO₄²⁻, and CO₂) during the plasma treating process.