A spectrofluori̇metric method based on a schiff base derived from chalcone to determine iron (III)

A simple spectrofluorimetric method was developed using a new Schiff base derived from substituted chalcone todetermine iron (III) ion. The method was validated by analyzing certified reference material (CRM-SA-C Sandy Soil C). Also, satisfactory accuracy was obtained for spinach and rocket samples. Nitric acid and hydrogen fluoride and only nitric acid were used for digestion of the certified reference material and food samples, respectively, in a closed microwave system. Measurements were carried out using a modified standard addition method. The standard addition graph was linear until 5,0 mg/L in determination of iron(III). Detection and quantification limits were 0,06 and 0,18mg/L, respectively. The method is simple, time-saving, cost-effective and suitable for determination of iron content of soil and foods. Keywords: Food;Soil; Iron determination; Spectrofluorimetric analysis; Chalcone; Schiff base