Dissipation Profiles Of Tristyrylphenol Ethoxylate Homologs In Lettuce Under Greenhouse And Field Conditions
文献类型: 外文期刊
作者: Li, CM; Zhang, P; He, QH; Shao, H; Zheng, LF; Wang, J; Jin, F
作者机构:
关键词: Tristyrylphenol Ethoxylates; Dissipation; Profile; Lettuce; Quechers
期刊名称: JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
ISSN: 0021-8561
年卷期: 2020 年 68 卷 6 期
页码:
收录情况: JCR(2021版) ; EI(2021版)
摘要: Tristyrylphenol ethoxylates (TSPEOs) have been increasingly used in pesticide formulations as inert ingredients in China, but little information exists on the dissipation behavior of TSPEOs in foodstuffs. In this work, a rapid method for measuring TSPEO homologs in lettuce using QuEChERS and HPLC-MS/MS was established. This method was used to study the dissipation and distribution profiles of TSPEOs in lettuce. TSPEO homologs degraded rapidly under greenhouse and field conditions, with half-lives of 2.18-5.39 and 1.82-5.52 days, respectively. TSPEOn (n = 6-9) were relatively persistent in the field. The distribution profiles showed an obvious difference between the two conditions. TSPEOn (n = 14-18) degraded to shorter-chain TSPEOs with time, and a two-peak (TSP16EO and TSP10EO) homolog distribution profile occurred between 7 and 14 days of treatment under greenhouse conditions. This work improves the understanding of the dissipation behavior of TSPEO homologs in lettuce.
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