| 丙炔氟草胺的水解及光解特性研究 |
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| 引用本文： | 程功,田宏哲,刘娜,朱赫,SHAFI Jamil,纪明山.丙炔氟草胺的水解及光解特性研究[J].农药学学报,2017,19(5):583-588. |
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| 作者姓名： | 程功 田宏哲 刘娜 朱赫 SHAFI Jamil 纪明山 |
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| 作者单位： | 1.沈阳农业大学 植物保护学院, 沈阳 110866 |
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| 摘 要： | 为深入了解丙炔氟草胺的环境化学行为，通过室内模拟试验研究了其在不同条件下的水解和光解特性。结果表明:15℃下，初始质量浓度为2 mg/L的丙炔氟草胺在pH值为5、7和9的缓冲溶液中的水解半衰期分别为63.00、33.00和28.50 h，即其在碱性条件下水解最快；中性(pH 7)条件下，丙炔氟草胺在15、25和35℃下的水解半衰期分别为33.00、23.10和8.88 h，表明其水解受温度影响，温度越高，水解速率越快；丙炔氟草胺在河水中的水解速率高于在自来水和蒸馏水中的水解速率，3种条件下的半衰期分别为2.70、6.03和19.80 h。300 W汞灯照射下，丙炔氟草胺在碱性条件下的光解速率大于在酸性和中性条件下，半衰期分别为0.03、0.45和0.44 h；此外，丙炔氟草胺在不同有机溶剂中的光解速率顺序依次为甲醇 > 乙酸乙酯 > 正己烷 > 乙腈 > 丙酮；其在不同光源下的光解速率依次为500 W汞灯 > 300 W汞灯 > 氙灯。研究结果可为丙炔氟草胺的环境风险评价提供参考。
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| 关 键 词： | 丙炔氟草胺 水解 光解 半衰期 |
| 收稿时间： | 2017/4/25 0:00:00 |
Study on the photolytic and hydrolytic properties of flumioxazin |
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| CHENG Gong,TIAN Hongzhe,LIU N,ZHU He,SHAFI Jamil and JI Mingshan.Study on the photolytic and hydrolytic properties of flumioxazin[J].Chinese Journal of Pesticide Science,2017,19(5):583-588. |
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| Authors: | CHENG Gong TIAN Hongzhe LIU N ZHU He SHAFI Jamil and JI Mingshan |
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| Institution: | 1.College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China |
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| Abstract: | In order to study the chemical behavior of flumioxazin. The photolytic and hydrolytic properties of flumioxazin under different conditions were investigated using the indoor simulation test method. The results showed that the hydrolysis half-life of flumioxazin was 63.00, 33.00 and 28.50 h in the buffer solutions with the initial concentration of 2 mg/L at pH, 5, 7 and 9, respectively. The degradation was much faster in alkaline solutions than in the neutral and acidic solutions. The hydrolysis half-lives of flumioxazin was 33.00, 23.10 and 8.88 h in the buffer solutions with the initial concentration of 2 mg/L at pH 7, 15, 25 and 35℃. The higher the temperature, the faster the hydrolysis rate. The hydrolysis rate of fulmioxazin in river water was higher than that in tap water and distilled water. Under the irradiation of 300 W mercury lamp, the photolysis rate of flumioxazin was higher than that under the acidic and neutral conditions. The photolytic rates of flumioxazin in different organic solvents showed the following sequence:methanol> ethyl acetate> N-hexane> acetonitrile> acetone. The photolysis rate under different light sources followed the sequence:500 W mercury lamp> 300 W mercury lamp> xenon lamp. The results provided a scientific basic for environmental risk assessment of flumioxazin. |
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| Keywords: | flumioxazin hydrolysis photolysis half-life |
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