MEASURING METHOD FOR TOTAL RESIDUAL OXIDANT OF BALLAST WATER

摘要

The present invention relates to a method for measuring a residual oxidant in ballast water. The method for measuring a residual oxidant in ballast water comprises: a cuvette washing step; a first cuvette internal sample water emptying step; a cuvette internal turbidity measuring step; a step of putting sample water into the cuvette; a step of measuring a sample water concentration; a second cuvette internal sample water emptying step; a step of putting a DPD reagent and sample water into the cuvette; a step of measuring a DPD reagent concentration and calculating a residual oxidant concentration; a third cuvette internal sample water emptying step; and a step of emptying the sample water after washing the cuvette. By performing the method for measuring a residual oxidant in ballast water, the existing method for measuring a residual oxidant comprising 10 steps can be reduced to four steps and be repeatedly performed so that the time required for measuring a residual oxidant in ballast water can be shortened. [Reference numerals] (AA) Start; (BB) First loop; (CC) Second loop; (DD) End; (S1) Cuvette washing step; (S10) Sample water emptying step after cuvette washing; (S2) First cuvette internal sample water emptying step; (S3) Cuvette internal turbidity measuring step; (S4) Step of putting sample water into the cuvette; (S5) Reference concentration measuring step; (S6) Second cuvette internal sample water emptying step; (S7) Step of putting a DPD reagent and sample water into the cuvette; (S8) Step of measuring a DPD reagent concentration and calculating a residual oxidant concentration; (S9) Third cuvette internal sample water emptying step