Study on Content of Fluroxypyr-dodecyl with UV Spectrophotometry

The fluroxypyr-dodecyl content has been determined by the UV spec trophotometry．Methanol was chosen as the solvent．The concentration absorbance was linear in the range of 12.0～20.0 μg/mL; the linear regression equation was A=0.0815C+0.0318(R²=0.9832)．The average recovery was 90.86％，and RDS was 5.3％(n=6)．The results show that this method is simple，sensitive，accurate and reproducible．