I OBSED A SOMANY CHROMATO GRAPH WITH PEKA TAILING AND PEAK FORNTING IT IS FOUND OUT THAT BY ADDING TEA OR OTHE BASIC REAGENT DUE TO SUPPRESSION AND DECRESED HYDROHOBIC EFFET PEAK TAILING IS DECREASED SO ANY BODYCAN GUIDE ON SUCH TOPIC

The whole issue of peak shape problems -- causes and cures -- is a complex one. I'd suggest getting hold of a good text book like Snyder, Glajch, and Kirkland's "Practical HPLC Method Development" for a thorough discussion of the subject.