Bi-EDTA配合物简便配制方法可行性研究

Feasibility research on the simple preparation complex of Bi-EDTA

根据 Bi3 +极易水解的特性 ,拟出了配制 Bi-EDTA配合物的简单方法。用适量Bi( NO3 ) 3 · 2 H2 O与适量 EDTA同时溶于适量水中 ,充分搅拌 ,调节 p H值 4 -7,(对硝基苯酚变为黄色 ) ,过滤 ,所得滤液即为所需 Bi-EDTA配合物溶液。

According to the property of easy hydrolization of bismuth in water,a simple method of preparation complex of Bi EDTA has been investigated.Added an amount of Bi(NO 3) 3·2H 2O and EDTA together into a beaker and dissolved in distilled water with efficient stirring,adjusted pH value is 4 to 7 (or p Nitrophenol change to yellow color),filtration,washing,gained filtrate just is complex solution of Bi EDTA that we need.