摘要
研究了磷酸三丁酯萃淋树脂吸附(Cr(Ⅵ))的性能及机理.在3～5mol/L HCI介质中,Cr(Ⅵ)以[Cr_2O_7^(2-)(TBPH^+)]形式被吸附,吸附反应在3～5min内即可达到平衡,其△H=-46.08 kJ/mol,饱和吸附容量为25mg/g.用减压微色谱柱技术,吸附在柱上的Cr(Ⅵ)仅用1mL水可完全洗脱.此法用于电镀废水中Cr(Ⅵ)的测定获得了满意的结果.
The adsorption properties and mechanism of chromium(Ⅵ) on tributyl phosphate(TBP) latexresin were studied by the static mehtod. The distribution ratio reacthed to the highest value in 3-5 mol/LHCl. The equilibrium time of adsorption reaction was 3 min. The adsorption capacity was 25 mg/g dryresin. The enthalpy of reaction (△H) was - 46.08 kJ/mol. The composition of adsorption matter is
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
1999年第8期945-948,共4页
Chinese Journal of Analytical Chemistry
