分析测试学报Issue(9)：979-985,7.DOI:10.3969/j.issn.1004-4957.2014.09.001
高灵敏度原子荧光光谱系统应用于砷、硒形态分析的研究
Study on Arsenic/Selenium Speciation Analysis by a Modified High Sensitive Atomic Fluorescence Spectrometric System
摘要
Abstract
A self-mode labs high sensitive atomic fluorescence spectrometric detection system com-bined with liquid chromatography,online ultraviolet photochemical digesting and vapor generation de-vice was established and evaluated. Arsenic and selenium species in various samples were extracted by heating-shaking and centrifugal filtration. All the analytes were separated on a reversed-phase col-umn using mobile phase of 5. 0 mmol/L phosphate buffer(pH 5. 7)-0. 5 mmol/L tetrabutyl ammonium bromide(TBAB)-1% methanol. The separations of AsO3-3 ,DMA,MMA,AsO3-4 and SeCys,SeMet, SeO2-3 ,SeO2-4 were achieved within 7 min and 11 min,respectively. Under the optimized operating con-ditions,the detection limits(DLs,S/N=3)were in the range of 0. 08-0. 74 μg/L,and the relative standard deviations( RSD,n=7 )were 1. 4% -7. 9%. The standard spiked recoveries for real samples were in the range of 82. 5% -116. 5%. Linearities were obtained in the ranges of 0. 28-40. 0 μg/L for arsenic species and 0. 38-80. 0 μg/L for selenium species. The developed system was successfully ap-plied in the detection of low levels of arsenic and selenium species in matrices.关键词
形态分析/高灵敏度原子荧光光谱系统/砷/硒Key words
speciation analysis/high sensitive atomic fluorescence spectrometric system/arsenic/selenium分类
化学化工引用本文复制引用
张硕,弓振斌..高灵敏度原子荧光光谱系统应用于砷、硒形态分析的研究[J].分析测试学报,2014,(9):979-985,7.基金项目
国家重大科学仪器设备开发专项项目 （）
