Determination Method of Nitrogen-Containing Cyclic Compounds in Environmental Water by HPLC-UV Detection after Solvent Extraction

We have studied a solvent extraction method for determination of five nitrogen-containing cyclic compounds (NCCCs), pyridine, quinoline, indole, acridine, and carbazole, in distilled water, tap water and river water by high performance liquid chromatography (HPLC) with ultraviolet detector (UV) . As a result, good linearity of the calibration curve was obtained in the concentration range from 0.05 mg·l-1 to 2 mg·-1. The recoveries for five NCCCs from river water at a concentration of 1μg·l-1 was 66.6-84.6%, and coefficient of variation was 6.9-8.7% by using solvent extraction method. This measurement method could be successfully applied to the determination of five NCCCs in distilled water, tap water and river water.