In this paper,the contents of herbicide bifenox weredeterminated by the differential UV spectrophotometry at 280nm,and the reference solution was that the 40.

本文采用差示紫外分光光度法，以40．0微克／毫升的甲羧除草醚己烷液为参比溶液，在波长280纳米处测定其含量。