A HIGHLY PORTABLE AND INEXPENSIVE FIELD SAMPLING KIT FOR RADIOCARBON ANALYSIS OF CARBON DIOXIDE
A HIGHLY PORTABLE AND INEXPENSIVE FIELD SAMPLING KIT FOR RADIOCARBON ANALYSIS OF CARBON DIOXIDE
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DOI：
10.1017/rdc.2021.49
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发表时间：
2021-06
期刊：
影响因子：
8.3
通讯作者：
M. Garnett;J. Newton;Thomas C. Parker
中科院分区：
文献类型：
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作者：
M. Garnett;J. Newton;Thomas C. Parker
二氧化碳（CO2）的放射性碳（14C）分析在碳循环研究中非常有用，因为它提供了独特的信息，可以推断这种温室气体的年龄和来源。含有二氧化碳吸附沸石分子筛的粉盒体积小，便携性高，与其他一些二氧化碳收集方法相比，这使得它们更适合于偏远地区的野外活动。然而，使用分子筛筒取样通常需要额外的设备，如红外气体分析仪，这可能会降低便携性，并由于功率需求而受到限制。此外，二氧化碳的14C分析越来越多地用于需要大量重复收集二氧化碳的现场实验，这给昂贵而笨重的收集设备带来了额外的压力。因此，我们设计并构建了一个分子筛CO2采样套件，它利用了一个小的，低功耗的CO2传感器。我们在一系列实验室和现场测试中证明了新试剂盒用于收集二氧化碳样品进行14C分析的可靠性。这种廉价的采样套件体积小，重量轻，高度便携，功耗低，特别适用于偏远和难以到达的地点的现场活动。
Abstract 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.