A gas perfusion microcalorimeter for studies of plant tissue

Autor: Ingemar Wadsö, R.W. Breidenbach, Per Bäckman, Peter Johansson
Rok vydání: 1995
Předmět:
Zdroj: Thermochimica Acta. 251:323-333
ISSN: 0040-6031
DOI: 10.1016/0040-6031(94)02144-d
Popis: A gas perfusion microcalorimetric system has been developed for metabolic investigations of plant tissues under dark conditions. The system consists of two twin heat conduction microcalorimeters connected by gas-tight tubing. During measurements, a flow of humid gas enters the main calorimeter containing the plant tissue. The volume of this sample chamber can be varied between 4 and 25 ml and the flow rate of the gas can be varied up to maximum of 150 ml h −1 . The outgoing air is allowed to pass through a second calorimeter, serving as an on-line CO 2 analyzer. Gases, such as NO x or CO 2 , can be added to the incoming gas-flow either continuously or by stepwise injection. The calorimetric system has been tested in respiratory experiments with potato tuber slices.
Databáze: OpenAIRE