How can I determine Iodine in a solution of Potassium Iodate, iodine and iodide?

I'm trying to determine the concentration of iodine in a solution containing about 1% iodine, 0.02% iodate and 0.6% iodide. I've tried titrimetric methods using sodium thiosulfate but this methods...

17 May 2017 7,243 6 View