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Dicationic Ionic Liquids of Herbicide 2,4-Dichlorophenoxyacetic Acid with Reduced Negative Effects on Environment
Journal of Agricultural and Food Chemistry ( IF 5.7 ) Pub Date : 2018-09-19 00:00:00 , DOI: 10.1021/acs.jafc.8b02584 Junfan Niu 1 , Zhaopeng Zhang 1 , Jingyue Tang 1 , Gang Tang 1 , Jiale Yang 1 , Weichen Wang 1 , Hong Huo 1 , Na Jiang 1 , Jianqiang Li 1 , Yongsong Cao 1
Journal of Agricultural and Food Chemistry ( IF 5.7 ) Pub Date : 2018-09-19 00:00:00 , DOI: 10.1021/acs.jafc.8b02584 Junfan Niu 1 , Zhaopeng Zhang 1 , Jingyue Tang 1 , Gang Tang 1 , Jiale Yang 1 , Weichen Wang 1 , Hong Huo 1 , Na Jiang 1 , Jianqiang Li 1 , Yongsong Cao 1
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Due to high volatility and water solubility, 2,4-dichlorophenoxyacetic acid (2,4-D) can easily enter into the atmosphere and water bodies by volatilization, drift, leaching, or runoff, which results in potential threats to the environment and human health. The physicochemical properties of pesticides can be regulated by preparing their ionic liquids. In this work, a series of dicationic ionic liquids (DILs) of 2,4-D were prepared to reduce its environmental risk and enhance herbicidal activity. The solubility, octanol–water partition coefficient, surface tension, and volatilization rate results of DILs showed that these properties could be optimized by choosing appropriate countercations. Compared to 2,4-D ammonium salt, DILs have lower volatility, water solubility, and surface tension as well as higher lipophilicity. Benefiting from optimized physicochemical properties, DILs HIL8–12 exhibited better herbicidal activity against three typical broadleaf weeds than 2,4-D ammonium salt, and their fresh weight inhibition rates increased by 2.74–46.84%. The safety assessment experiment indicated that DILs were safer to wheat than commercialized forms of 2,4-D. The DILs could reduce the environmental risk of 2,4-D caused by high volatility and water solubility and would be potential alternatives to its commercialized formulations.
中文翻译：
除草剂2,4-二氯苯氧基乙酸的阳离子溶液，对环境的负面影响减小
由于高挥发性和水溶性，2,4-二氯苯氧基乙酸（2,4-D）容易通过挥发，漂移，浸出或径流进入大气和水体，对环境和人类构成潜在威胁健康。农药的物理化学性质可以通过制备其离子液体来调节。在这项工作中，制备了一系列的2,4-D离子型离子液体（DIL），以降低其环境风险并增强除草活性。DIL的溶解度，辛醇-水分配系数，表面张力和挥发速率结果表明，可以通过选择合适的抗衡阳离子来优化这些性能。与2,4-D铵盐相比，DIL具有较低的挥发性，水溶性和表面张力以及更高的亲脂性。HIL8-12对3种典型的阔叶杂草表现出比2，4-D铵盐更好的除草活性，其鲜重抑制率提高了2.74-46.84％。安全评估实验表明，DILs比商业化形式的2,4-D对小麦更安全。DILs可以减少高挥发性和水溶性引起的2,4-D环境风险，并且可能是其商业化配方的潜在替代品。
更新日期：2018-09-19
中文翻译：
除草剂2,4-二氯苯氧基乙酸的阳离子溶液，对环境的负面影响减小
由于高挥发性和水溶性，2,4-二氯苯氧基乙酸（2,4-D）容易通过挥发，漂移，浸出或径流进入大气和水体，对环境和人类构成潜在威胁健康。农药的物理化学性质可以通过制备其离子液体来调节。在这项工作中，制备了一系列的2,4-D离子型离子液体（DIL），以降低其环境风险并增强除草活性。DIL的溶解度，辛醇-水分配系数，表面张力和挥发速率结果表明，可以通过选择合适的抗衡阳离子来优化这些性能。与2,4-D铵盐相比，DIL具有较低的挥发性，水溶性和表面张力以及更高的亲脂性。HIL8-12对3种典型的阔叶杂草表现出比2，4-D铵盐更好的除草活性，其鲜重抑制率提高了2.74-46.84％。安全评估实验表明，DILs比商业化形式的2,4-D对小麦更安全。DILs可以减少高挥发性和水溶性引起的2,4-D环境风险，并且可能是其商业化配方的潜在替代品。
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