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タイトル: | Evaluation of the concentrations of hydrogen and methane emitted by termite using a semiconductor gas sensor |
著者: | Yanase, Yoshiyuki Miura, Masahiro Fujii, Yoshihisa Okumura, Shogo Yoshimura, Tsuyoshi |
著者名の別形: | 簗瀬, 佳之 |
キーワード: | Nondestructive detection Hydrogen Methane Termite attack Semiconductor gas sensor |
発行日: | Jun-2013 |
出版者: | Springer Japan |
誌名: | Journal of Wood Science |
巻: | 59 |
号: | 3 |
開始ページ: | 243 |
終了ページ: | 248 |
抄録: | 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. |
著作権等: | The final publication is available at Springer via http://dx.doi.org/10.1007/s10086-013-1325-7 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。 This is not the published version. Please cite only the published version. |
URI: | http://hdl.handle.net/2433/189746 |
DOI(出版社版): | 10.1007/s10086-013-1325-7 |
出現コレクション: | 学術雑誌掲載論文等 |
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