A phytoremediation experiment was carried out with kerosene as a model for total petroleum hydrocarbons. constructed wetland of barley exposed to pollutants at varying concentrations (1, 2, and 3% v/v) in subsurface flow (SSF) system. After period 42 days exposure, it found that the average ability eliminate ranged from 56.5% 61.2%, highest removal obtained concentration 1% v/v. The analysis in...