Einsatz der Doppeldetektion zur Optimierung der Gasdiffusion in der Flie�injektionsanalyse ? Bestimmung von Ammonium und Sulfid
| Autor: | M. Brodowski, O. Elsholz, A. Thiele, G. Schulze |
|---|---|
| Rok vydání: | 1988 |
| Předmět: |
chemistry.chemical_classification
Flow injection analysis Sulfide Hydrogen sulfide Clinical Biochemistry Inorganic chemistry Analytical chemistry General Medicine Biochemistry Acceptor Analytical Chemistry chemistry.chemical_compound Ammonia Membrane chemistry Gaseous diffusion General Materials Science Ammonium |
| Zdroj: | Fresenius' Zeitschrift f�r Analytische Chemie. 329:714-717 |
| ISSN: | 1618-2650 0016-1152 |
| DOI: | 10.1007/bf00624782 |
| Popis: | Using gas diffusion, ammonium and sulfide can be determined selectively by flow injection analysis. An estimation of the membrane transference is achieved by dual-detection. It permits the determination of the volatile component in both the donor and the acceptor stream. This is performed by use of a retardation loop in the case of sulfide. For ammonium, two gas diffusion units are coupled with each other. As a measure of the membrane transference the effectivity of transfer is defined, estimating 30–40% for hydrogen sulfide and ca. 7% for ammonia. An elevation of temperature to 80 °C increases the membrane transference by a factor of 1.2 and 1.8, respectively. Different membranes were tested. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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