二安替比林基-(对二甲氨基)苯基甲烷与铀(Ⅳ)的显色反应

Color Reaction between Diantipyryl-(p-dimethylamino)-phenylmethane(DADM) and Uranium(Ⅳ)

合成了高灵敏显色剂二安替比林基-（二甲氨基）苯基甲烷（DADM）。在中性条件中,吐温-60存在下,水浴加热20min之后,二安替比林基-（对二甲氨基）苯基甲烷与铀（Ⅳ）反应生成紫红色络合物,λmax=555nm,ε=54206×105L/（mol/cm）。铀（Ⅳ）的含量在0～070μg/mL范围内符合比尔定律。方法可靠快速,可用于含铀样品的测定。

Highly sensitive chromogenic reagent diantipyryl - （ p - dimethylamino） - phenylmethane （DADM） was synthesized. Under neutral condition, in the presence of Tween - 60, 20 min in water bath, DADM reacted with uranium （IV） giving out purple complex with hmax =555 nm ,8 =5. 4206 × 105 L/（mol/ cm）. When the amount of Uranium （Ⅳ） is within 0 ～0. 70 μg./mL range, Bouguer - Lambert - Beer law is obeyed. This method is reliable and rapid for the determination of the uranium - containing samples.