| Autor: |
U.A.Th. Brinkman, G.J. de Jong, H.L. Boter, Ch.E. Kientz, A. Poppema, R.W. Frei, Albert Verweij |
| Rok vydání: |
1989 |
| Předmět: |
|
| Zdroj: |
Journal of Chromatography A. 467:385-394 |
| ISSN: |
0021-9673 |
| DOI: |
10.1016/s0021-9673(01)93991-3 |
| Popis: |
An improved interface coupled to a commercially available flame photometric detector designed for gas chromatography has been investigated for its applicability in micro-column (0.32 mm I.D.) liquid chromatography. The column effluent is directly introduced into the flame via a 0.1 mm I.D. fused-silica capillary. The influence on the detector performance of parameters such as the position of the effluent introduction into the flame, the composition and flow-rates of the gases and the quenching by the eluent is discussed. With a series of organophosphorus acids as model compounds, plots of peak area vs. amount injected are linear (r > 0.998) in the range 0.5–200 ng investigated. The repeatability is better than 6% (n = 148). The system shows a detection limit of 20 pg of phosphorus per second (0.5–2 ng of analyte) when using an aqueous ammonium acetate or nitric acid solution as the eluent. The addition of methanol or acetonitrile to the eluent quenches the detector response. A mass flux of 1.2 mg/s of oxidizable carbon causes a 20% loss in detector signal. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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