Speciation Determination of Selenium in Seafood by High-Performance Ion-Exchange Chromatography-Hydride Generation-Atomic Fluorescence Spectrometry

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• 作者：Xiaoxue Xie ; Chuchu Feng ; Mingde Ye ; Chengjun Wang
• 关键词：Selenium speciation ; Seafood ; Ion ; exchange chromatography ; Atomic fluorescence spectrometry
• 刊名：Food Analytical Methods
• 出版年：2015
• 出版时间：August 2015
• 年：2015
• 卷：8
• 期：7
• 页码：1739-1745
• 全文大小：510 KB
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  Moreno P, Quijano M, Gutierrez A, Pére
• 作者单位：Xiaoxue Xie (1)
  Chuchu Feng (1)
  Mingde Ye (1)
  Chengjun Wang (1)
  
  1. College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, China
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Food Science
  Chemistry
  Microbiology
  Analytical Chemistry
  
• 出版者：Springer New York
• ISSN：1936-976X

文摘

A high-performance ion-exchange chromatography coupled with hydride generation-atomic fluorescence spectrometry (HPIEC-HG-AFS) method was developed for simultaneous speciation of selenium in seafood. Three selenium species including of selenocystine (Se-Cys), selenome-thionine (Se-Met), and selenite Se(IV) were separated on an anion-exchange column (PRP-X100) with eluent of 30?mM NH4H2PO4 and methanol (39:1, v/v) in 10?min at the flow rate of 1.0?mL?min?. Variables affecting the HG-AFS detection of selenium species were optimized. The optimum conditions found were the following: reducing agent, 2.0?% of KBH4, and 5.0?% of HCl; lamp current, 90?mA; photomultiplier tube voltage, 280?V; flow rate of carrier gas, 300?mL?min?; and shielding gas, 800?mL?min?. Under the optimized conditions, the good linearity of calibration curves (R 2-gt;-.999) between signal of fluorescence and concentration of selenium species was obtained in the range of detection limits (DLs), 80?μg?L?, and the DLs of Se-Cys, Se-Met, Se(IV) were 1.66, 0.990, 1.10?μg?L?, respectively. The repeatability of the method, expressed as relative standard deviation, was less than 5.0?% (n--0), and the average recoveries for spiked test were from 87.3 to 103?% for three analytes in real seafood samples. The developed HPIEC-HG-AFS method was successfully applied for the speciation of selenium in seafood samples.