Radiocarbon (14C) analysis of carbon dioxide (CO2) can be extremely useful in carbon cycle studies because it provides unique information that can infer the age and source of this greenhouse gas. Cartridges containing the CO2-adsorbing zeolite molecular sieve are small and highly portable, which makes them more suitable for field campaigns in remote locations compared to some other CO2 collection methods. However, sampling with molecular sieve cartridges usually requires additional equipment, such as an infrared gas analyser, which can reduce portability and pose limitations due to power demands. In addition, 14C analysis of CO2 is increasingly being used in field experiments which require high numbers of replicate CO2 collections, placing extra pressure on an expensive and cumbersome collection apparatus. We therefore designed and built a molecular sieve CO2 sampling kit that utilizes a small, low power CO2 sensor. We demonstrate the reliability of the new kit for the collection of CO2 samples for 14C analysis in a series of laboratory and field tests. This inexpensive sampling kit is small, light-weight, highly portable, and has low power demands, making it particularly useful for field campaigns in remote and inaccessible locations.

中文翻译：

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用于二氧化碳放射性碳分析的高度便携且价格低廉的现场采样套件

放射性碳 (14C) 分析二氧化碳 (CO)2) 在碳循环研究中非常有用，因为它提供了可以推断这种温室气体的年龄和来源的独特信息。含有 CO 的墨盒2-吸附沸石分子筛体积小，携带方便，与其他一些二氧化碳相比，这使其更适合偏远地区的野外活动2采集方法。然而，使用分子筛筒进行采样通常需要额外的设备，例如红外气体分析仪，这会降低便携性并由于电力需求而受到限制。此外，14一氧化碳的 C 分析2越来越多地用于需要大量重复 CO 的现场实验2收集，给昂贵且笨重的收集设备带来额外的压力。因此，我们设计并制造了分子筛 CO2采用小型、低功率 CO 的采样套件2传感器。我们展示了用于收集 CO 的新套件的可靠性2样品14在一系列实验室和现场测试中进行 C 分析。这种廉价的采样套件体积小、重量轻、便携性强，并且功耗要求低，使其特别适用于偏远和难以接近的地点的野外活动。