| 蔡光辉1, 2#, 马婧玮2#, 吴艳兵1*, 颜振敏1, 周 娟2, 汪 红2, 吴绪金2*.环氟菌胺在小麦生态系统中的残留消解及膳食风险评估[J].植物保护,2020,46(6):144-148. |
| 环氟菌胺在小麦生态系统中的残留消解及膳食风险评估 |
| Dissipation, residues and dietary risk assessment of cyflufenamid in a wheat ecosystem |
| 投稿时间：2019-08-25 修订日期：2019-12-02 |
| DOI：DOI:10.16688/j.zwbh.2019433 |
| 中文关键词: 环氟菌胺 小麦 残留检测 膳食摄入评估 |
| 英文关键词:cyflufenamid wheat residue determination risk assessment of dietary residue intake |
| 基金项目:河南省科技创新杰出青年项目(184100510015); 河南省自然科学基金(182300410080); 河南省高校重点科研项目(18A210011); 新乡市科技计划项目(CXGG17009); 河南省农业科学院自主创新项目(2019ZC52) |
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| 中文摘要: |
| 建立了环氟菌胺在小麦植株和麦田土壤中的残留检测方法, 并对其在小麦中的残留量进行了膳食摄入评估?样品中环氟菌胺经乙腈提取, 氨基固相萃取柱净化, 气相色谱检测, 外标法定量?结果表明:在0.02~10 mg/kg添加水平下, 环氟菌胺在小麦植株?小麦籽粒和土壤中的平均回收率在78%~119%之间, 相对标准偏差在0.63%~14%之间?小麦植株?小麦籽粒和土壤中环氟菌胺最低检测浓度(LOQ)均为0.02 mg/kg?环氟菌胺在小麦植株中的消解符合一级动力学方程, 半衰期为1.5~5.1 d?按推荐有效剂量132 g/hm2施药, 在30~50 d采收间隔期环氟菌胺的残留量均<0.2 mg/kg?环氟菌胺的普通人群国家估计每日摄入量(NEDI)是0.002 77 mg, 占日允许摄入量(ADI)的6.93%左右, 认为对一般人群健康不会产生不可接受的风险? |
| 英文摘要: |
| A method for the determination of cyflufenamid residues in wheat and soil was developed using gas chromatography. The dietary risk for China’s population was evaluated based on the data of cyflufenamid residues in wheat. Cyflufenamid was extracted by acetonitrile and purified by NH2 column. The samples were detected by gas chromatography and quantified by using the external standard method. At the fortified level of 0.02-10 mg/kg, the average recoveries of cyflufenamid in wheat plants, wheat seeds and soil varied from 78% to 119%, with a relative standard deviation of 0.63%-14%. The limit of quantification (LOQ) of cyflufenamid in wheat plants, wheat seeds and soil was 0.02 mg/kg. The dissipations of cyflufenamid in wheat plants were consistent with the first-order kinetic equation with a half-life of 1.5-5.1 d. According to the recommended effective dose of 132 g/hm2, the residual amount of cyflufenamid was less than 0.2 mg/kg during the harvest interval of 30-50 d. The national estimated daily intake (NEDI) of cyflufenamid was 0.002 77 mg, accounting for about 6.93% of the daily ADI. The potential health risk induced by cyflufenamid was not significant based on the trial data of supervised residues. |
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