A simple procedure for analysis of aromatic antioxidants and UV stabilizers is described : dissolution of polyethylene in n-heptane at temperature 160 degrees C and pressure 0.5 MPa, precipitation of the polymer after a cooling of the solution, filtration of the obtained solution into an injection syringe, and injection into a silica gel column flushed with mobile phase n-heptane plus polar modifier. The eluted additive is detected with a uv detector. Application of the procedure on quantitative determination of Irganox 1330 in PE-MD demonstrates that the above procedure has high recovery of the antioxidant, good reproducibility of the analysis (sigma = 1.9%), and a very low detection limit of 0.013 mg/l g polymer. The described procedure may be easily adjusted for the analysis of many other additives in semicrystalline polyolefins.