阴离子交换树脂分离同位素稀释等离子体质谱法快速测定地质样品中的铼

Separation and determination of Re in geological samples by isotope dilution-ICP-MS with anion exchange resin

建立了适合大批量低含量Re地质样品的测定方法,0.2 g样品通过HF,HNO3分解后在2 mol/L的HCl介质中用阴离子交换树脂进行振荡吸附,然后用HNO3(1+1)解脱,同位素稀释等离子体质谱法测定。

Separation and determination are necessary for Re in geological samples because the content of Re is normally at ng/g level. A simple method was reported for the determination of Re in large amounts of geological samples in this paper. 0. 2 g of samples were digested with HF and HNO3. Re was adsorbed with anion exchange resin on a vibrator and desorbed with HNO3 （ 1 ＋ 1 ）. The samples were measured by ID-ICP-MS. The proposed method is very simple and it can be used for routine determination of Re in large amounts of geological samples.