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A method for time-resolved calorespirometry of terrestrial samples.

Författare

Summary, in English

A new vessel for simultaneous isothermal calorimetry and respirometry (calorespirometry) on terrestrial (non-aqueous) samples has been developed. All types of small (<1g) biological samples (insects, soil, leaves, fungi, etc.) can be studied. The respirometric measurements are made by opening and closing a valve to a vial inside the sample ampoule containing a carbon dioxide absorbent. Typically a 7h measurement results in seven measurements of heat production rate, oxygen consumption and carbon dioxide production, which can be used to evaluate how the metabolic activity in a sample changes over time. Results from three experiments on leaves, a cut vegetable, and mold are given. As uncertainties - especially in the carbon dioxide production - tend to be quite high, improvements to the technique are also discussed.

Publiceringsår

2015

Språk

Engelska

Sidor

20-26

Publikation/Tidskrift/Serie

Methods

Volym

76

Issue

Online 23 October 2014

Dokumenttyp

Artikel i tidskrift

Förlag

Elsevier

Ämne

  • Materials Engineering

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 1095-9130