中文摘要：本文旨在探讨温室条件下十种不同类型农药（即嘧菌酯、啶酰菌胺、二嗪磷、乙霉威、苯醚甲环唑、醚菊酯、氟虫酰胺，多效唑和吡唑醚菌酯等）在幼穗苋上喷施一次或两次后的下降规律及风险，现场收集了两种处理方式后3、7和10天后的样本，并采用 “QUECHERS”柠檬酸盐缓冲方法进行提出和纯化采用LC-MS/MS方法进行分析，检测结果的线性度非常满意，相关系数在0.9817 -0.9999之间，检测限和定量限分别为0.0007和0.002 mg/kg，四个加标水平下（5, 10, 50和100 x LOQ）平均回收率为78.1-131.6%，相对标准偏差（RSD）小于11%。本文通过对比理论每日最大摄入量和每日允许摄入量进行风险评估，除了苯醚甲环唑外，其他农药残留理论每日最大摄入量均低于每日允许摄入量，因此，苋菜无害，在韩国可以安全食用。
外文摘要：The present study was designed to investigate the residual decline pattern and the risk assessment of 10 different class pesticides, namely azoxystrobin, boscalid, diazinon, diethofencarb, difenoconazole, etofenprox, flubendiamide, paclobutrazol, and pyraclostrobin in young vegetative amaranth (Amaranthus mangostanus) sprayed once or twice under greenhouse growing conditions. Field-incurred samples, collected at 3, 7, or 10 days after application of both treatments, were extracted and purified with the quick, easy, cheap, effective, rugged, and safe "QuEChERS" citrate-buffered method and analyzed with liquid chromatography-electrospray ionization tandem mass spectrometry (LC-MS/MS) in positive ion mode. The linearity was satisfactory with determination coefficients (R (2)) falling between 0.9817 and 0.9999 and limits of detection (LOD) and quantification (LOQ) values of 0.0007 and 0.002 mg/kg, respectively. The mean recovery rate at four spiking levels (equivalent to 5, 10, 50, and 100 x LOQ) ranged from 78.1 to 131.6% with a relative standard deviation (RSD) of < 11%. Substantial differences in the initial deposit between the tested analytes were observed and clearly indicated that the structure, as well as the initial concentration of applied products, greatly affected the residue deposit. From the obtained residual data, the provisional marginal maximum residue limits (MRLs) and the pre-harvest intervals (PHI) were proposed. Risk assessment was evaluated by comparing the theoretical maximum daily intake (TMDI) with the acceptable daily intake (ADI). Herein, the TMDI was lower than the ADI (TMDI/ADI ratio ae 80% set by the Korean Ministry of *Food* and Drug Safety) except for difenoconazole (80.92%, marginally higher), indicating that the vegetative amaranth is not hazardous and can be consumed safely by Korean consumers.
外文关键词：Decline patterns, Risk assessment, Amaranth, Leafy vegetable, QuEChERS, LC-MS/MS
作者： Kim, In Kyung; Kim, Sung-Woo; Abd El-Aty, A. M.; Rahman, Md Musfiqur;Kabir, Md Humayun; Lee, Han Sol; Chung, Hyung Suk; Jeong, Ji Hoon; Shin,Ho-Chul; Shim, Jae-Han
作者单位：Chonnam Natl Univ, Coll Agr & Life Sci, Nat Prod Chem Lab, Yongbong Ro 77, Gwangju 500757, South Korea.Abd El-Aty.
期刊名称：ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
期刊影响因子：2.741
出版年份：2017
出版刊次：11
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