摘要
为了更准确得测定成都市成华区路边尘土中的铂、钯含量，采用王水加热消解样品，三正辛胺络合、泡塑分离富集、电感耦合等离子体质谱法测定。试验结果表明，浓盐酸＋王水消解样品效果较好；震荡时间为30min时，分离基体，富集铂钯效果达到平衡；泡塑用量为0．2g即可满足10g样品分离富集要求；铂的回收率在91．87％～108．72％；钯的回收在93．34％～97．90％；方法检出限铂为0．01ng／mL，钯为0．013ng／g。该方法操作简便、分析速度快、灵敏度高，具有良好的测定精密度和准确度，使用于超痕量铂、钯的分析。
Inorder to separate and enrich trace platinum in roadside dust, which is digested by heated aqua regia and foam as adsorbent in hydrochloric acid adsorption medium of 15%, determinated by ICP-MS. The results showed that ： concentrated hydrochloric acid ＋ aqua regia digestion works is best ; shaking time was 30 min, the separation and enrichment effect to achieve the most;dosage of foam is 0.2 g could require the separation and enrichment of 10 g sample;Pt recovery is 91.87% - 108.72% ,Pd recovery is 93.34% -97.90%. The detection limit of Pt, Pd was 0. 01 ng/mL and 0. 013 ng/g. The proposed method proved to be simple,rapid and sensitive with good measurement precision, suitable for ultra-trace analysis of Pt, Pd.
出处
《科学技术与工程》
北大核心
2014年第16期187-189,共3页
Science Technology and Engineering
