氯冉酸曾被用于测定微量钠盐以及重金属,后来Barreto用该试剂测定有机溶剂中的水分。我们研究了用氯冉酸光度测定气体中少量水分的条件,并用于氢、氧等气体中少量水分的测定,方法简便、快速,重现性良好,结果满意。 (一)试剂及仪器 1.0.002M氯冉酸(Chloranilic acid)溶液:称取0.1045克氯冉酸(实验室试剂),溶于无水乙醇中,转入250毫升棕色容量瓶中,并用无水乙醇稀释至刻 Chlorotranic acid has been used to determine trace amounts of sodium and heavy metals, which Barreto later used to determine the water content of organic solvents. We studied the use of chlorotoran acid photometric determination of a small amount of water gas conditions, and for hydrogen, oxygen and other gases measured a small amount of water, the method is simple, fast, reproducible, with satisfactory results. (A) Reagents and Instruments 1.0.002M Chloranilic acid solution: Weigh 0.1045 g of chloroform acid (laboratory reagent), dissolved in absolute ethanol, transferred to a 250 ml brown volumetric flask and washed with water Ethanol diluted to engraved