摘要
本文报道Ｎ，Ｎ－二乙基甲酰胺代甲基膦酸二正己酯（简称Ｅ）萃取金（Ⅱ）的各种参数，如分配比、振荡时间、相比、水相酸度及酰的种类，以及其它离子对萃取金（Ⅲ）分配比的影响。并求得了达到平衡时化合物Ｅ萃取金反应的焓变（ＯＨ）和熵变（ＯＳ）。
The title compound is an excellent extractant for gold(Ⅲ). In this paper, venous parameters for its gold (Ⅲ) extraction, such as distribution ratio, the extractability of diverse ions,effects of shaking time for extraction, phase ratio, and acidity of aqueous phsse upon the extraction efficiency,as well as effect of the extractant concentration upon the distribution ratio of gold (Ⅲ) are reported. Prom experimental results, the changed of enthalpy(△H) and of entropy(△S)for the gold(Ⅲ) extraCtion at equilibrium have been calculated.
出处
《分析科学学报》
CAS
CSCD
1995年第3期3-7,共5页
Journal of Analytical Science
基金
中国科学院科学基金
关键词
乙基
甲酰胺代甲基
磷酸二正己酯
金
萃取
Di-n-hexyl N, N-diethylcarbamoylmethylphosphonate,Gold (Ⅲ),Extraction
