在有氧条件下土壤中氟草烟除草剂的降解。
Degradation of fentrazamide herbicide in soil under aerobic condition.
机构信息
Department of Chemistry (Division of Agricultural Chemicals), College of Basic Sciences and Humanities, G. B. Pant University of Agriculture & Technology, U. S. Nagar, Pantnagar, 263 145, Uttarakhand, India.
出版信息
Bull Environ Contam Toxicol. 2012 Aug;89(2):312-5. doi: 10.1007/s00128-012-0697-5. Epub 2012 Jun 12.
Dissipation of fentrazamide in soil under aerobic conditions was studied. Fentrazamide was extracted with 0.1 N HCl: acetone (1:1 v/v) followed by partition and cleanup. Separation was done on ODS-II column with mobile phase acetonitrile: water (70:30 v/v). Recovery varied from 74.51 % to 90.10 % percent in soil. Dissipation followed first order kinetics with monophasic pattern. Half life in soil was 9.02 days. Calibration curves were linear over the range of 0.05-1.00 μg mL(-1) and RSD was 1.82 %. LOD and LOQ were 0.002 and 0.005 μg g(-1) for soil. No residues in soil and crop were observed at harvest.
在有氧条件下研究了呋咱甲酰胺在土壤中的消解情况。采用 0.1N HCl：丙酮（1:1v/v）提取，然后进行分配和净化。采用 ODS-II 柱，以乙腈：水（70:30v/v）为流动相进行分离。在土壤中的回收率为 74.51%至 90.10%。消解遵循一级动力学，具有单峰模式。在土壤中的半衰期为 9.02 天。在 0.05-1.00μg mL(-1)范围内，校准曲线呈线性，RSD 为 1.82%。土壤中的 LOD 和 LOQ 分别为 0.002 和 0.005μg g(-1)。收获时，土壤和作物中均未检测到残留。
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