▎ 摘　　要

NOVELTY - A reagent comprises 12-18 pts. wt. acetate, 3-7 pts. wt. silver nitrate, 4-8 pts. wt. activated carbon, 2-8 pts. wt. sodium citrate, 5-6 pts. wt. glycol, 2-5 pts. wt. sodium tetraborate, 3-6 pts. wt. butyl acetate, 14-26 pts. wt. graphene dispersion liquid, 8-13 pts. wt. Chrysanthemum, 4.2-5.4 pts. wt. oxalic acid and 3-9 pts. wt. fatty alcohol polyoxyethylene ether. USE - Reagent for detecting the water quality. ADVANTAGE - The reagent has wide raw material source, synergetic effect, rapid reaction speed, and improved working efficiency, and can avoid the interference of other ions, effectively detect chloride ions in water, and remain bleaching reaction of barium sulfate in the water, so that the water quality is improved. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for preparing a reagent.