Indirect photometric detection of boron cluster anions electrophoretically separated in methanol
Language English Country Netherlands Media print-electronic
Document type Journal Article, Research Support, Non-U.S. Gov't
PubMed
24630978
DOI
10.1016/j.chroma.2014.02.060
PII: S0021-9673(14)00307-0
Knihovny.cz E-resources
- Keywords
- Boron cluster, Capillary electrophoresis, Indirect photometry, Ion pair, Methanol, Mobility,
- MeSH
- Anions chemistry MeSH
- Boron chemistry MeSH
- Electrophoresis, Capillary methods MeSH
- Electrolytes MeSH
- Photometry methods MeSH
- Methanol chemistry MeSH
- Tromethamine chemistry MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Names of Substances
- Anions MeSH
- Boron MeSH
- Electrolytes MeSH
- Methanol MeSH
- Tromethamine MeSH
3,5-Dinitrobenzoate and picrate are light absorbing anions pertinent to indirect photometric detection of boron cluster anions in buffered methanolic background electrolytes (BGEs). Tris(hydroxymethyl)aminomethane and morpholine have been used as buffering bases, which eliminated baseline steps, and minimized the baseline noise. In methanolic BGEs, mobilities of boron cluster anions depend on both ionic constituents of the BGE buffer. This dependence can be explained by ion pair interaction of detected anions with BGE cations, which are not bonded into ion pairs with the BGE anions. The former ion pair interaction decreases sensitivity of the indirect photometric detection.
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