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试剂锆标准溶液:称取0.353克ZrOCl_2·8H_2O,用2N盐酸加热溶解并煮沸5分钟,以使溶液中的锆盐解聚。冷却,以2N盐酸在100毫升量瓶中稀释,摇匀。取此液5毫升置500毫升量瓶内,用2N盐酸稀释至刻度,1毫升含10微克锆。条件试验一试验方法称取纯铜按操作步骤制备底液。显色液:取底液5毫升置50毫升量瓶中加锆标准液2毫升,加5毫升2N盐酸,5毫升偶氮胂Ⅱ,用2N盐酸稀释至刻度、摇匀。
Reagent zirconium standard solution: Weigh 0.353 g ZrOCl 2 · 8H 2 O, dissolve by heating with 2N hydrochloric acid and boil for 5 minutes to depolymerize the zirconium salt in the solution. Cool, dilute with 2N hydrochloric acid in 100 ml volumetric flask and shake well. Take this solution 5 ml set 500 ml volumetric flask, dilute with 2N hydrochloric acid to the mark, 1 ml containing 10 micrograms of zirconium. Test conditions A test method Weigh copper according to the steps to prepare the bottom liquid. Color solution: take the bottom liquid 5 ml set 50 ml bottle plus zirconium standard solution 2 ml, add 5 ml 2N hydrochloric acid, 5 ml arsenazo Ⅱ, diluted with 2N hydrochloric acid to the mark, shake.