TY - JOUR
T1 - Sensing performance of thermoelectric hydrogen sensor for breath hydrogen analysis
AU - Nishibori, M.
AU - Shin, W.
AU - Izu, N.
AU - Itoh, T.
AU - Matsubara, I.
PY - 2009/4/2
Y1 - 2009/4/2
N2 - We studied the sensing performance of the thermoelectric hydrogen sensor (THS) aimed at application to the human breath hydrogen (H2) analysis for the evaluation of colonic flora. The THS has unique gas sensing performance such as H2 selectivity and immunity to humidity. We have designed a simple human breath analysis system with this sensor, gas pump and dehumidifier of silica gel. The humidity of the human breath gas was controlled to be as low as 20% RH at 25 °C through the gas-drying tube because the humidity in the human breath gas causes serious noise effect. The THS system was able to detect 4-103 ppm of H2 in human breath sample which coexisted with various gases such as methane (CH4) and carbon monoxide (CO).
AB - We studied the sensing performance of the thermoelectric hydrogen sensor (THS) aimed at application to the human breath hydrogen (H2) analysis for the evaluation of colonic flora. The THS has unique gas sensing performance such as H2 selectivity and immunity to humidity. We have designed a simple human breath analysis system with this sensor, gas pump and dehumidifier of silica gel. The humidity of the human breath gas was controlled to be as low as 20% RH at 25 °C through the gas-drying tube because the humidity in the human breath gas causes serious noise effect. The THS system was able to detect 4-103 ppm of H2 in human breath sample which coexisted with various gases such as methane (CH4) and carbon monoxide (CO).
KW - Gas sensor
KW - Human breath
KW - Hydrogen
KW - Thermoelectric device
UR - http://www.scopus.com/inward/record.url?scp=62649135138&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=62649135138&partnerID=8YFLogxK
U2 - 10.1016/j.snb.2009.01.029
DO - 10.1016/j.snb.2009.01.029
M3 - Article
AN - SCOPUS:62649135138
SN - 0925-4005
VL - 137
SP - 524
EP - 528
JO - Sensors and Actuators B: Chemical
JF - Sensors and Actuators B: Chemical
IS - 2
ER -