摘要
测量了铅(Ⅱ)在苯乙烯膦酸单1—甲基庚基酯(MH(S)PA,(B317)的二甲苯溶液与硝酸钠水溶液间的分配。记录了MH(S)PA和它的铅盐的红外光谱。也研究了同样条件下二—2—乙基已基磷酸(DEHPA)的性质。无论是MH(S)PA还是DEHPA,铅的萃合物都是Pb(HA_2)_2(H_2A_2表示萃取剂的二聚分子)。铅盐的磷酰氧基的红外光潜特征振动频率比萃取剂的低,说明有磷酰氧原子对铅原子的配位。
The distribution of Pb (Ⅱ) between mono-1-methylheptyl hydrogen styrylphosphonate (MH(S)PA, B317) in xylene and aqueous sodium nitrate solutions was measured, and the infrared spectra of MH(S)PA and its Pb salts were recorded.In addition, the properties of Di-2-ethylhexy]phosphoric acid (DEHPA) were investigated under the same conditions. It was established that Pb complexes formed with either of MH(s)PA and DEHPA take the forms of Pb (HA_2)_2, where H_2A_2 denotes the bipolymers of extractants and that the P=0 group in the Pb salts has a lower characteristic frequency of infrared spectra than the extractants, indicating Pb atoms are coordinated by the atoms in P=0 groups.
出处
《矿冶工程》
CAS
CSCD
北大核心
1990年第4期41-43,共3页
Mining and Metallurgical Engineering
关键词
溶剂萃取
铅
红外光谱
Mono-1-methylheptyl hydrogen styrylphosphonate, Solvent extraction, Infrared spectrum, Pb
