首页> 外文期刊>Food Analytical Methods >A Gas Chromatographic Method with Electron-Capture Detector (GC-ECD) for Simultaneous Determination of Fenpropathrin, λ-Cyhalothrin, and Deltamethrin Residues in Tomato and Its Applications to Kinetic Studies After Field Treatment
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A Gas Chromatographic Method with Electron-Capture Detector (GC-ECD) for Simultaneous Determination of Fenpropathrin, λ-Cyhalothrin, and Deltamethrin Residues in Tomato and Its Applications to Kinetic Studies After Field Treatment

机译:电子捕获检测器(GC-ECD)的气相色谱法同时测定番茄中的苯丙草胺,λ-氯氟氰菊酯和溴氰菊酯残留量及其在田间处理后的动力学研究中的应用

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摘要

In this study, simultaneous determination of fenpropathrin, λ-cyhalothrin, and deltamethrin in tomato fruit (Lycopesicon esculentum) grown in Khartoum, Sudan, was carried out using gas chromatography with electron capture detector (GC-ECD).The method was linear in the range of 0.001–0.01, 0.001–0.01 and 0.001–0.02 mg/ml for fenpropathrin, λ-cyhalothrin, and deltamethrin, respectively. The limit of detection (LOD) and limit of quantification (LOQ) were found to be 0.0012 and 0.0041, 0.0013 and 0.0041 and 0.0026 and 0.0087 mg/ml for fenpropathrin, λ-cyhalothrin, and deltamethrin, respectively. The recoveries of fenpropathrin, λ-cyhalothrin, and deltamethrin at three concentration levels spiked to tomato were found to be in range 85.77 ± 1.52–95.61 ± 3.65%, 91.77 ± 4.34–98.59 ± 2.46% and 92.61 ± 2.46–98.04 ± 2.93%, respectively. The kinetic study of the degradation of all pesticides was performed and the ultimate evaluation of the kinetic data revealed a pseudo first order kinetics pattern for fenpropathrin, λ-cyhalothrin, and deltamethrin.
机译:在这项研究中,采用气相色谱-电子捕获检测器(GC-ECD)同时测定了苏丹喀土穆番茄果实(Lycopesicon esculentum)中的苯丙酸菊酯,λ-氯氟氰菊酯和溴氰菊酯。甲氰菊酯,甲氰菊酯和溴氰菊酯的浓度范围分别为0.001-0.01、0.001-0.01和0.001-0.02 mg / ml。苯丙胺甲酸酯,λ-氯氟氰菊酯和溴氰菊酯的检出限(LOD)和定量限(LOQ)分别为0.0012和0.0041、0.0013和0.0041和0.0026和0.0087 mg / ml。在三个浓度水平上加到番茄上的苯丙酸菊酯,λ-氟氰菊酯和溴氰菊酯的回收率分别为85.77±1.52–95.61±3.65%,91.77±4.34–98.59±2.46%和92.61±2.46–98.04±2.93% , 分别。进行了所有农药降解的动力学研究,并对动力学数据进行了最终评估,结果显示了苯甲酚原,λ-氯氟氰菊酯和溴氰菊酯的伪一级动力学规律。

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