摘要
研究从硝酸、硫酸和盐酸介质中用异戊醇萃取Re(Ⅶ)的过程,探讨了酸浓度和萃取剂用量对萃取率的影响。紫外-可见光谱证实了异戊醇萃取Re(Ⅶ)为离子缔合体系的阴离子交换反应。用同位素稀释法结合电感耦合等离子体质谱仪对黄铁矿、黄铜矿、磁铁矿和橄辉岩等地质样品中的痕量Re进行了准确测定。以橄榄岩国际标样(CCRMP,WPR-1)为监控样品,5次重复分析的平均结果(10.67ng/g)与文献报道的分析结果(10.83ng/g)一致。对黄铜矿单矿物样品中的Re进行分析,5次重复分析的相对标准偏差为1.03%。
Extraction process of rhenium （Ⅶ） from the media of nitric, sulfuric and hydrochloric acids using isoamylol was studied. Effect of types and concentrations of acids, and volume of extrac- tion reagent on extraction yield of rhenium was discussed. The extraction mechanism of rhenium（ Ⅶ ） was proved to be an anion exchange reaction by UV - Vis spectra. A method for the determination of trace rhenium in geological samples, such as pyrite, chalcopyrite, magnetite and rock, using iso- tope dilution -inductive coupled plasma mass spectrometry was developed. This method was verified by analyzing the international reference material（ CCRMP, WPR-1 ） and the analysis results were in good agreement with the value reported by Meisel and Moser. RSD （n = 5 ） for Re content in chal- copyrite sample was 1.03% .
出处
《分析测试学报》
CAS
CSCD
北大核心
2009年第9期1027-1030,共4页
Journal of Instrumental Analysis
基金
中国科学院知识创新工程方向性资助项目(KZCX2-YW-136
KZCX2-YW-111)
国家自然科学基金资助项目(40873028)
中国科学院"百人计划"资助项目
关键词
异戊醇
铼
萃取
地质样品
isoamylol
rhenium
extraction
geological sample
作者简介
第一作者：苟体忠（1981-），男，贵州遵义人，博士研究生
通讯作者：钟宏，Tel：0851-5891820，E-mail：zhonghong@vip．gyig．ac.cn
