大孔弱碱叔胺树脂分离富集GFAAS测定痕量金

Separation and Concentration of Trace Au with Macroporous Weak-alkali Trimethylamine Resin and Its GFAAS Determination

研究了大孔弱碱叔胺树脂Ｄ３７１吸附和解吸金的性能。探讨了吸附金的机理，测定了静态时树脂的吸附性能和吸附容量。通过柱色谱法，试验了酸度、温度和干扰离子等因素对Ｄ３７１树脂吸附和洗脱金的影响。确定了石墨炉原子吸收光谱测定痕量金的最佳参数条件及Ｄ３７１树脂分离富集石墨炉原子吸收光谱测定地质样品中痕量金的新方法。

The paper reports on adsorption and elution characteristics of Au with macroporous weak alkali trimethylamine resin D371,discusses the adsorption mechanism of Au adsorption capacities of the resin were determined under static condition. The effects of acidity,temperature and interfered ions on adsorption and elution characteristics of Au with D371 resin were tested by chromatobar. The optimun parameters for GFAAS determination of trace Au were selected.A new method,which included separation and concentration with D371 resin and GFAAS determination of trace Au in geological sample,was established.