Residue and Degradation of Profenofos in Soil / 环境与健康杂志

ABSTRACT

Objective To investigate the degradation rate of profenofos in soil. Methods The residues of profenofos at different times after spraying on soil were determined by GC-FPD method. Results Detection limit of profenofos in soil was 0.04 mg/kg. The recovery rates and relative standard deviation obtained by adding standard assay were 95.2%～98.7% and 3.4%～4.5% respectively. According to the dose recommended, degradation of profenofos sprayed on soil was consistent with one range dynamics. The half-life of profenofos in soil was 1.09 days. At the 13th day after spraying on soil, 98.3% of profenofos had degraded. Conclusion This method was simple, rapid, accurate and precise. The degradation of profenofos was more rapid and profenofos contamination in soil was not a serious problem.