Simple Method for Detection of Potassium Iodate (KIO3) in a Kitchen Salt Using cassava starch (Manihot esculenta)

Abstract

This research has been made a simple method for the detection of potassium iodate (KIO3) in a kitchen salt using cassava starch (Manihot esculenta). The process of making this test kits using acid solvent as the reagent, KIO3 solution, and indicator of cassava starch. The used cassava starch is in two conditions are dry starch for H2SO4 and wet starch for H3PO4. Based on the two solvents are then made a standard color series based on KIO3 levels of 10, 20, 30, 40, and 50 ppm. Validation of this method has analyzed using Spectrophotometer UV-Vis. From the results of this analysis obtained calibration curve of each standard with both solvent. Coefficients determination for linearity using H3PO4 and H2SO4 solution is 0.9874 and 0.9656. From that results from the H3PO4 solution applied to the detection of potassium iodate (KIO3) in a kitchen salt using cassava starch (Manihot esculenta) with a concentration in the range 30-40 ppm.