Description
Background/Introduction: Potassium ions are necessary for the function of all living cells. Potassium ion shifts across nerve cell membranes are necessary for normal nerve transmission: potassium depletion can result in numerous abnormalities, including of heart rhythm. Fresh fruits and vegetables are good dietary sources of potassium. The potassium ions can react with sodium tetraphenylborate. The products potassium tetraphenylboron can be measured at a colorimetric readout at 520 nm