| Autor: |
Wang K; ChemTrace Corp, Fremont, CA 94538, USA. kefei_wang@chemtrace.com, Lei Y, Eitel M, Tan S |
| Jazyk: |
angličtina |
| Zdroj: |
Journal of chromatography. A [J Chromatogr A] 2002 May 17; Vol. 956 (1-2), pp. 109-20. |
| DOI: |
10.1016/s0021-9673(02)00396-5 |
| Abstrakt: |
In this study, ion chromatography (IC) with suppressed conductivity detection was used for the determination of trace anions in 29% (w/w) ammonium hydroxide, 49% (w/w) hydrofluoric acid and slurries. For these samples, various sample pretreatment methods were applied to eliminate matrix interferences. For concentrated ammonium hydroxide, an on-line electrochemical neutralizer (SP10 AutoNeutralization module) was used to neutralize the base prior to the IC analysis. For concentrated hydrofluoric acid, a heart cutting technique with an ion-exclusion column was used to separate the anions of interest prior to an IC separation. A method was also developed to analyze chloride in silica slurries by IC. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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