in conclusion,the described extraction procedure and RP-HPLC method seems to fulfil the criteria of selectivity sensitivity, reproducibility and convenience for analysing the nitrite and nitrate content in ham.it is less laboious than reference procedure and strong
anionic exchange chromatography . thus,it is suitable for routine assay. HPLC analysis time is lower than 8 min and extraction procedure is rapid and cost effective.Chromatograms with a clean and interference-free baseline are obtained