物探与化探2012，Vol.36Issue(6)：947-951,5.
氢化物发生—原子荧光光谱法测定地质样品中的锑(Ⅲ)和锑(Ⅴ)
THE DETERMINATION OF ANTIMONY (Ⅲ) AND ANTOMONY (Ⅴ) IN GEOLOGICAL SAMPLES BY HYDRIDE GENERATION-ATOMIC FLUORESCENCE SPECTROMETRY
郝志红 1杨帆 1刑夏 2汤志勇 1张勤3
作者信息
- 1. 中国地质科学院地球物理地球化学勘查研究所,河北廊坊065000
- 2. 中国地质大学地球科学与资源学院,北京100083
- 3. 中国地质大学材料科学与化学工程学院,湖北武汉430074
- 折叠
摘要
Abstract
A method for the determination of antimony ( Ⅲ ) and antimony ( V ) in geological samples (stream sediments) by hydride generation-atomic fluorescence spectrometry was developed in the paper. 4. 8 mol/L HC1 could be used as the extraclant with ultrasonic-assisted extraction. In the medium of 0. 24 mol/L hydrochloric acid, antimony ( Ⅲ) could be alternatively determined with 6 g/mL sodium citrate as the masking agent for Sb (V). Then antimony ( V ) could be figured out by the subtraction method. The detection limit of the method was 0. 075 × 10 -6 for Sb ( 1) and 0. 097 × 10 -6 for Sb ( V ) , and the relative standard deviation was 1. 1 % and 0. 64% ( n = 11) for 40 ng/mL Sb ( Ⅲ ) and 40 ng/mL Sb( V ) standard solution. The proposed method was applied to the determination of antimony ( Ⅲ) and antimony ( V ) in geological samples, and a comparison between the extraction results and the aqua regia dissolution results shows that the extraction rate of antimony was higher than 80% , the recoveries were in the ranges of 83% - 107% and 98% -114% for Sb ( Ⅲ) and Sb (V) respectively.关键词
价态分析/锑(Ⅲ)和锑(Ⅴ)/掩蔽剂/氢化物发生—原子荧光光谱法Key words
speciation analysis/antimony (Ⅲ) and antimony ( V ) /masking agent/hydride generation-atomic fluorescence spectrometry分类
天文与地球科学引用本文复制引用
郝志红,杨帆,刑夏,汤志勇,张勤..氢化物发生—原子荧光光谱法测定地质样品中的锑(Ⅲ)和锑(Ⅴ)[J].物探与化探,2012,36(6):947-951,5.
