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- E-ISSN 2288-8985
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Determination of fluoride in fluorite mine wastewater by ion chromatogaraphy with post-wash technique
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2006, v.19 no.5, pp.383-388
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(2006). Determination of fluoride in fluorite mine wastewater by ion chromatogaraphy with post-wash technique. Analytical Science and Technology, 19(5), 383-388.
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Abstract
Simple post-wash method by ion chromatography (IC) was established for the rapid and precise determination of fluoride ion in wastewater from mine in fluorite mineralized area. High sulfate in sample was retained in a pre-column and less strongly held fluoride ion was transferred to the principal separation system using modified conventional IC with switching technique. An analytical column with high capacity (AS 9 HC) was used as a pre-column to retain the amount of high sulfate. A guard column (AG 14) as a separation column was used to increase the response of fluoride and reduce the system pressure. According to the recovery of fluoride ion with one detector and the observation of sulfate peak with another conductivity detector, the optimum switching time of 10-port chromatographic injector was 4.3 min. The limit of detection (S/N
- keywords
- fluoride, fluorite mineralized area, ion chromatography, post-wash
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