Zhang Chu, Jiao Leizi, Wei Yibo, Bao Feng, Guo Rui, Dong Daming
School of Optoelectronic Engineering, Guilin University of Electronic Technology, Guilin 541004, China.
Research Center of Intelligent Equipment for Agriculture, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China.
Sensors (Basel). 2024 Dec 4;24(23):7777. doi: 10.3390/s24237777.
Gas sensors are essential measurement devices that have found extensive applications across various fields, including industry, agriculture, ecological and environmental monitoring, military operations, and biomedical research. Numerous sensing methods based on a diverse range of principles-including optics, electrochemistry, and semiconductors-have been used in the development and manufacture of gas sensing technologies. However, the measurement of certain gases remains challenging when using current sensing techniques and sensors; this is particularly true for the gases that are present in solid media. For example, the nitrous oxide that is emitted from soil is often trapped within soil pores, while a significant portion of the ethylene that is released from fruit dissolves within the flesh of the fruit itself. Measurement of the gases in these situations poses difficulties when using conventional gas sensing methodologies. To enable the detection of these elusive gases, scientists and engineers have devised a variety of specialized approaches over the past two decades. In this review article, we summarize several of these sensing methods-including extraction measurement techniques, in-medium scattering spectroscopy, and the use of micro-nano gas sensing probes-and discuss their respective advantages and disadvantages, along with emerging trends in the development of these techniques.
气体传感器是至关重要的测量设备，在包括工业、农业、生态与环境监测、军事行动以及生物医学研究等各个领域都有广泛应用。基于多种原理（包括光学、电化学和半导体等）的众多传感方法已被用于气体传感技术的开发与制造。然而，使用当前的传感技术和传感器来测量某些气体仍然具有挑战性；对于存在于固体介质中的气体而言尤其如此。例如，从土壤中排放的一氧化二氮常常被困在土壤孔隙中，而从水果释放的大部分乙烯则溶解在水果自身的果肉中。在这些情况下，使用传统的气体传感方法来测量气体存在困难。为了能够检测这些难以捉摸的气体，科学家和工程师在过去二十年中设计了各种专门的方法。在这篇综述文章中，我们总结了其中几种传感方法，包括萃取测量技术、介质内散射光谱以及微纳气体传感探针的使用，并讨论了它们各自的优缺点以及这些技术发展的新趋势。
