Degradation of Chlorpyrifos on Cherry Tomato Surfaces by Atmospheric-Pressure Air Cold Plasma: Degradation Products, Pathways, and Toxicological Response
ID:20 View Protection:ATTENDEE Updated Time:2026-10-06 17:30:31 Hits:32 Oral Presentation

Start Time:2026-10-11 11:50(Asia/Shanghai)

Duration:20min

Session:OS Oral Session » OS-d3Oral Session day3

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Abstract
大气压冷等离子体作为一种非热技术,在新鲜农产品农药残留降解方面越来越受到关注[1,2]。本研究采用多针点对板式空气冷等离子体系统,对人工施用于樱桃番茄表面的毒死蜱进行降解,同时检测残留去除率和乙酰胆碱酯酶(AChE)抑制率。在最佳条件下(23.6 kV,10 kHz),经等离子体处理180 s后,樱桃番茄表面毒死蜱的降解率达到88%。AChE抑制率从65.02 ± 1.76%下降至38.74 ± 4.97%(F(4,8)=17.241,P=5.35×10⁻⁴),这与毒死蜱的胆碱酯酶相关作用机制相符[3]。通过全扫描LC-MS1/EIC检测到8种毒死蜱降解产物(P1-P8),其特征离子m/z分别为333.8、277.8、195.8、163.9、243.9、118.0、170.9和114.9。其中一种产物在m/z 195.8/197.9/199.8/201.8处观察到特征氯同位素簇,并根据保留时间、MS1和同位素模式证据提出了降解途径。本研究为大气压空气冷等离子体在食品中广谱有机磷杀虫剂降解中的应用提供了理论基础。
 
Keywords
atmospheric-pressure air cold plasma,chlorpyrifos,acetylholineseras,LC-MS
Speaker
Ningning Wang
学生 Zhejiang University

Submission Author
Ningning Wang Zhejiang University
Zhen Liu Zhejiang University;College of Chemical and Biological Engneering
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Important Date
  • Conference Date

    Oct 09

    2026

    to

    Oct 11

    2026

  • Sep 23 2026

    Draft paper submission deadline

  • Oct 15 2026

    Registration deadline

Sponsored By
Beijing Institute of Technology
Organized By
Beijing Institute of Technology