AN APPARATUS FOR CONTINUOUS MEASUREMENT OF $sup 14$CO$sub 2$ IN THE EXHALED AIR OF MEDIUM-SIZED AND LARGE DOMESTIC ANIMALS (in German)
Measurement of C/sup 14/O/sub 2/ in exhaled air is an important part of metabolism tests with compounds labelled with C/sup 14/. The following procedure was developed for tests using mediumsized and large domestic animals: the animal breathes through a mask into a constant-volume gas current, which is measured with a gas meter. Part of this gas current is drawn off, dried, and conducted through an ionization chamber to measure its activity. The C0/sub 2/ concentration of this part of the current is further measured with a heat- conductivity analyzer. Radioactivity and C0/sub 2/ concentration are registered continuously. The construction, operation, and gaging of this apparatus are described. It is used successfully for metaabolism tests with urea and carbonate in goats, and can also be used for animal-chamber tests on smaller animals. (tr- auth)
- Research Organization:
- Tierarztlichen Hochschule, Hanover
- NSA Number:
- NSA-15-028958
- OSTI ID:
- 4843084
- Journal Information:
- Atompraxis (West Germany) Incorporated in Kerntechnik, Vol. Vol: 7; Other Information: Orig. Receipt Date: 31-DEC-61
- Country of Publication:
- Country unknown/Code not available
- Language:
- German
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