Interfacing HPLC and Cold-Vapor AA with On-Line Preconcentration for Mercury Speciation

研究成果: 雜誌貢獻文章

30 引文 斯高帕斯(Scopus)

摘要

A quartz reaction vessel is designed and constructed to interface HPLC and cold-vapor AA for mercury speciation in aqueous samples. Inorganic mercury, methyl mercuric and ethyl mercuric compounds can be separated effectively within 10 minutes. An on-line preconcentration unit is used to reduce the limit of detection (LOD) before the sample is introduced into the reversed-phase HPLC. Without preconcentration, the detection limits for the three mercury species are 0.094, 0.085 and 0.124 ppm, respectively. Limits of detection are reduced to 0.78, 0.78 and 0.42 ppb, with the use of preconcentration technique. The feasibility of this method is tested by analyzing mercury compounds in synthetic tap and river water samples.

原文英語
頁(從 - 到)681-697
頁數17
期刊Spectroscopy Letters
24
發行號5
DOIs
出版狀態已發佈 - 1991

ASJC Scopus subject areas

  • Analytical Chemistry
  • Spectroscopy
  • Atomic and Molecular Physics, and Optics

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