The book deals with nitrate determine in environmental matrices and food products. A simple and sensitive Reversed Phase Ion Pair High Performance Liquid Chromatography (RP-IP- HPLC) method for the determination of nitrate has been developed. The determination of nitrate concentration was carried out on HPLC (Waters) coupled with UV detector, using reversed phase chromatography technique. Investigations were performed using mobile phase comprising 80% tetra-ethyl ammonium chloride (6.0 mM) and 20 % pure acetonitrile (HPLC grade). Separation was done by reversed phase C18 column (150mm 4.5mm...