二甲苯胺蓝-1(XB-1)作为镁的显色剂,由于试剂本身和它与镁生成的络合物的吸收峰相距太近,所以一直未能受到重视。但自从表面活性剂引入该显色反应后,这一问题才得解决,本文报道溴化十六烷基三甲胺(CTMAB)等表面活性剂对镁与XB-1显色反应的影响。实验表明,在有表面活性剂存在时,XB-1与表面活性剂组成的缔合物其吸收 Xylidine Blue-1 (XB-1), as a chromogenic reagent of magnesium, has not been given much attention because the reagent itself is too close to the absorption peak of its complex with magnesium. However, this problem has been solved since the introduction of the surfactant into the color reaction. This article reports the effect of surfactants such as cetyltrimethyl ammonium bromide (CTMAB) on the color reaction of magnesium with XB-1. Experiments have shown that in the presence of a surfactant, the association of XB-1 with a surfactant is absorbed