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Fast Determination of Tetrafluoroborate by High-performance Liquid Chromatography Using a Monolithic Column by Shuang Zhou; Hong Yu; Ling Yang; Hongjing Ai is a Chemistry article available to read on EtoBox.

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Fast determination of tetrafluoroborate by high-performance liquid chromatography using a silica-based monolithic column and direct conductivity detection was carried out. Chromatographic separation was performed on a Chromolith Speed ROD RP-18e column (50 mm × 4.6 mm i.d.) with tetrabutylammonium hydroxide (TBA-OH) + phthalic acid as eluent. The effects of eluent concentration, eluent pH, column temperature and flow rate on retention time of tetrafluoroborate were investigated. The optimized chromatographic conditions for determination of tetrafluoroborate were using 0.5 mM TBA-OH + 0.31 mM phthalic acid (pH 5.5) as eluent, column temperature of 30 • C and flow rate of 6.0 mL/min. Retention time of tetrafluoroborate was less than 1 min under the conditions. Common anions (Cl -, Br -, NO 3 -and SO 4 2-) did not interfere with the determination of tetrafluoroborate. Detection limit (S/N = 2) for tetrafluoroborate was 1.4 mg/L. The linear range of calibration curve between peak area and the concentration of tetrafluoroborate was from 1.4 to 100.0 mg/L. The reproducibility was 0.09% and 1.8% (n = 5) relative standard deviation (RSD) for retention time and peak area, respectively. The

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Author

Shuang Zhou; Hong Yu; Ling Yang; Hongjing Ai

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 1873-3778)

Published

2008

Language

EN

Field

Chemistry (Physical Sciences)