Pyrolysis Gases Measured by FTIR Spectroscopy in a Wind Tunnel and at Ft. Jackson, SC

This data set contains pyrolysis gas composition resulting from experimental fires in longleaf pine fuel beds burned in a wind tunnel and in small experimental fires at Ft. Jackson, SC. The gases were sampled and then measured by Fourier Transform Infrared (FTIR) spectroscopy. These data were collected from the same experiments contained in the "Pyrolysis gases measured by gas chromatography and mass spectrometry from fires in a wind tunnel and at Ft. Jackson, SC" data set and many of the data files and metadata in that product describe the locations, fuels, environmental conditions and fire behavior information related to this data product. The wind tunnel data spectra were captured in real time using both static (composite sample) and dynamic (time-series) modes; the Ft. Jackson data were collected in canisters and processed offline within a day of collection. A total of 29 gases were identified including small alkanes, alkenes, aldehydes, nitrogen compounds, and aromatics, most previously measured by FTIR in wildland fires. A total of 33 static (23 wind tunnel and 10 field) and 10 dynamic (wind tunnel) samples were analyzed. Wind tunnel gas concentration data estimated using external cavity quantum cascade lasers are also included. The pyrolysis gas composition in this data set, in combination with the data product "Pyrolysis gases measured by gas chromatography and mass spectrometry from fires in a wind tunnel and at Ft. Jackson, SC", were compared with the pyrolysis gas composition determined using traditional methods contained in the data product "Pyrolysis gases produced by fast and slow pyrolysis of foliage samples from 15 plants common to the southeastern US coastal plain". The use of trade or firm names is for information and does not imply endorsement by the US Department of Agriculture of any product or service.

本数据集收录了长叶松燃料床在风洞实验燃烧以及南卡罗来纳州杰克逊堡小型野外实验火灾中产生的热解气体成分数据。气体样品经采集后，采用傅里叶变换红外（Fourier Transform Infrared, FTIR）光谱法完成测定。本数据集的数据与"风洞及南卡罗来纳州杰克逊堡火灾中气相色谱-质谱联用测定的热解气体"数据集源自同一组实验，该数据产品中的多数数据文件与元数据可用于说明本数据集相关的采样点位、燃料类型、环境条件及火灾行为信息。风洞实验的气体光谱采用静态（复合样品）与动态（时间序列）两种模式实时采集；杰克逊堡的实验数据则通过气罐收集，并于采样当日完成离线处理。本数据集共识别出29种气体，涵盖小分子烷烃、烯烃、醛类、含氮化合物及芳香烃，其中多数此前已在野外火灾的FTIR检测中被报道。共计分析了33份静态样品（23份来自风洞实验，10份来自野外实验）与10份动态样品（全部来自风洞实验）。本数据集还收录了采用外腔量子级联激光器（external cavity quantum cascade lasers）估算得到的风洞气体浓度数据。本数据集的热解气体成分数据，与"风洞及南卡罗来纳州杰克逊堡火灾中气相色谱-质谱联用测定的热解气体"数据产品相结合，可与另一数据产品"美国东南沿海平原15种常见植物叶片样品快速热解与慢速热解产生的热解气体"中采用传统方法测定的热解气体成分开展对比分析。文中提及的商品或商号名称仅用于参考，并不代表美国农业部对任何产品或服务的认可。