光谱学与光谱分析 |
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Speciation Analysis of Mercury by Capillary Electrophoresis On-Line Coupled with Inductively Coupled Plasma Mass Spectrometry Based on a Micro Mist Nebulizer and a Removable Interface |
LI Bao-hui1, YU Li-ping2, WANG Zhao-hui1, LIU Li-wen1,YAN Xiu-ping1* |
1.Research Center for Analytical Sciences, College of Chemistry, Nankai University, Tianjin 300071, China 2.Department of Chemistry, Faculty of Science, Tianjin University, Tianjin 300072, China |
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Abstract A method for mercury speciation analysis was developed by CE-ICP-MS with a Micro Mist nebulizer and a removable interface.Contamination of ICP-MS detector by the rising solution was avoided with the use of a removable interface during capillary rinsing.Baseline separation of methylmercury (MeHg) and inorganic mercury (Hg2+) was obtained by CE in a 45 cm×75 μm i.d.fused-silica capillary at 22.5 kV,while a mixture of 30 mmol-1 H3BO3+10% CH3OH (pH 8.7) acted as running electrolyte.The precisions (RSD, n=5) of migration time and peak area for the mercury species were in the ranges of 3.5%-3.8% and 2.3%-5.1%, respectively.The limits of detection (3σ) of MeHg and Hg2+ were 47 and 48 μg·L-1, respectively.
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Received: 2005-04-18
Accepted: 2005-06-20
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Corresponding Authors:
YAN Xiu-ping
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Cite this article: |
LI Bao-hui,YU Li-ping,WANG Zhao-hui, et al. Speciation Analysis of Mercury by Capillary Electrophoresis On-Line Coupled with Inductively Coupled Plasma Mass Spectrometry Based on a Micro Mist Nebulizer and a Removable Interface [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2005, 25(08): 1336-1338.
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URL: |
https://www.gpxygpfx.com/EN/Y2005/V25/I08/1336 |
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