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A simple ice nucleation spectrometer


Wharton, DA and Mutch, JS and Wilson, PW and Marshall, CJ and Lim, M, A simple ice nucleation spectrometer, Cryoletters, 25, (5) pp. 335-340. ISSN 0143-2044 (2004) [Refereed Article]


The construction of a simple ice nucleation spectrometer is described. It uses 10 μl droplets loaded into glass capillary tubes which are then inserted into an aluminium holder. Each holder takes six capillary tubes surrounding a central thermocouple. Four holders are placed into a cooling block, cooled by fluid from a programmable refrigerated circulator, and the thermocouples interfaced to a computer to record temperatures. Freezing of each sample is detected by an exotherm on the temperature recording, with 24 samples recorded per run. The spectrometer was tested using deionized water, an extract from a New Zealand alpine cockroach and an extract of lawn grass. The cockroach extract is estimated to contain about 103 more nucleators, active at -5C, than the grass extract.

Item Details

Item Type:Refereed Article
Keywords:Celatoblatta quinquemaculata; Exotherm; Freezing; Grass; Ice nucleation spectrometer
Research Division:Chemical Sciences
Research Group:Physical chemistry
Research Field:Physical chemistry not elsewhere classified
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the physical sciences
UTAS Author:Wilson, PW (Professor Peter Wilson)
ID Code:99764
Year Published:2004
Web of Science® Times Cited:12
Deposited By:Faculty of Health
Deposited On:2015-04-08
Last Modified:2015-04-08

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