Development of Sensor for Exhaled Breath Components as Diet TherapyMonitoring

呼出气中的挥发性有机化合物（VOC）反映了我们体内呼出空气中的代谢产物。因此，无创呼吸分析有可能取代许多化合物的血液和尿液分析。监测呼吸丙酮和/或异戊二烯可以用于遵循规定的饮食方案的患者。本文建立了一种测定呼吸丙酮的流动注射分析系统。该系统已成功地应用于监测呼吸丙酮受膳食和运动影响的变化。提出了一种新的测定异戊二烯气体的流动注射分析体系。

Volatile organic compounds (VOCs) in exhaled breath reflect products of metabolism in our body in the expired air. Therefore, noninvasive breath analysis has the potential of replacing blood and urine analyses for many compounds. Monitoring breath acetone and/or isoprene can be useful to follow patients on a prescribed diet regimen. In this work, a flow injection analysis (FIA) system was developed for the determination of breath acetone. The FIA system has been successfully applied to the monitoring of variation of breath acetone affected by meal and exercise. A new FIA system was also proposed for the determination of gaseous isoprene.