オーラルセッション
- 第3日 5月17日（木） 15:05～15:25 C会場（星雲2）
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3C-O2-M-1505 PDF
可搬型マルチターン飛行時間型質量分析計を用いた多成分土壌起源ガスの同時連続フィールド測定システムの開発
Soil is one of the major sources of greenhouse gases, such as nitrous oxide (N2O) and methane (CH4), and carbon dioxide (CO2). These soil gases, including N2 and O2 are generated and consumed through microbial activity in soil and thus behaviors of these biological gases are inter-connected each other. It is desired for better global flux estimation to unveil the factors that affect emission and/or consumption of these gases through the simultaneous measurement and comparison of multiple soil gases. In this study, a multi-turn time-of-flight mass spectrometer system combined with an automated gas flux chamber measurement system was developed for the simultaneous and continuous quantification of soil gases in few minutes. As first attempt, concentrations of ambient-level of N2O (~330 ppbv) and CO2 (~400 ppmv) were quantitatively monitored in a soil incubation experiment.