Based on the reaction between metoclopramide,alkaline luminol and potassium ferrocyanide to produce chemiluminescence,a new chemiluminescence system with flow injection technology for the determination of metoclopramide has been proposed in this paper.

The quantitative determination method of potassium ferrocyanide in edible salt is described in the paper.

The catalytic action of mercury(Ⅱ ) on the colour reaction between potassium ferrocyanide and 4, 7-diphenyl-1, 10-phenanthrolihe has been studied, The addition of thiourea will further increase the sensitivity of the reaction.

Then,reduce the remaining Ferric ion content under the H 2O 2 oxidation condition with Potassium Ferrouscyanide or,under the recovery condition,use Potassium Ferricyanideagain to complete the ferrous ion reduction.

Based on the catalytic effect of silver on the chromatic reaction of K4Fe(CN)6 and O - phen, a new spectrophotometric method for determining trace silver has been developed.

The influences of K4Fe(CN)6 on the deposit composition,resistivity,structure,morphology and the electrochemical reactions of hypophosphite(oxidation) and cupric ion(reduction) were investigated.

Chapter II:Investigate the substituent reaction of Potassium hexacyanoferrate as envionment-benign cyanide reagent with aroyl chlorides.