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Title: Evaluation of the concentrations of hydrogen and methane emitted by termite using a semiconductor gas sensor
Authors: Yanase, Yoshiyuki  kyouindb  KAKEN_id
Miura, Masahiro
Fujii, Yoshihisa
Okumura, Shogo
Yoshimura, Tsuyoshi  kyouindb  KAKEN_id
Author's alias: 簗瀬, 佳之
Keywords: Nondestructive detection
Termite attack
Semiconductor gas sensor
Issue Date: Jun-2013
Publisher: Springer Japan
Journal title: Journal of Wood Science
Volume: 59
Issue: 3
Start page: 243
End page: 248
Abstract: A gas detection apparatus equipped with a semiconductor gas sensor was employed for qualitative and quantitative measurement of hydrogen and methane emitted by termites. A gas sample of 2.5 ml was injected into the semiconductor gas sensor through the gas detection apparatus, and the maximum voltage of the sensor was converted into gas concentration. The gas samples were collected from three distinct experiments: (1) five combinations of workers and soldiers of Coptotermes formosanus with and without a wood specimen; (2) C. formosanus under six temperature conditions; and (3) four different termite species, C. formosanus, Reticulitermes speratus, Incisitermes minor, and Zootermopsis nevadensis. The hydrogen and methane concentrations increased with an increase in the number of termites. Concentrations were higher in samples with a wood specimen than without it. Both hydrogen and methane concentrations were the highest for the samples at 35 °C and were lowest at 15 and 5 °C. The concentrations were very low at 45 °C because all the termites had died in a few hours. The concentrations of hydrogen and methane were highest for Z. nevadensis, the dampwood termite, among the four species, and no methane was detected for I. minor, the drywood termite, at 28 °C and 75 % RH.
Rights: The final publication is available at Springer via
This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。
DOI(Published Version): 10.1007/s10086-013-1325-7
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