Le systbrne peroxyde d'azote-phosphate de calcium a surtout 8th BtudiB du point de vue industriel en ~u e de l'obtention d'engrais mixtes phosphates e t nitrbs. A cet effet, 0 1 1 a consid61.8 esclusivement la rhaction du pcroxyde d'azote sur le phosphate en piksence de quantiths plus ou moins grand
Sur le dosage spectrophotométrique de traces de peroxyde d'azote
✍ Scribed by P. Janssens
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 2010
- Weight
- 584 KB
- Volume
- 54
- Category
- Article
- ISSN
- 0037-9646
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✦ Synopsis
Abstract
On the spectrophotometric determination of traces of Nitrogen Peroxide. — As nitrogen peroxide shows an absorption band coinciding with the sodium D doublet, a sodium vapour lamp has been used as the monochromatic source.
The gas has been examined in layer thicknesses of 1 to 4 m., with 2 barrier layer cells mounted in opposition.
The calibration has been realised by the method of expansion in a known volume.
An appreciable temperature effect, due to the desorption of the gas adsorbed on the tube surface, is noticed.
The limit of detection is nearly one part in a million.
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