This work encompasses the various laboratory-based and portable methods evolved in recent times for sensitive and selective detection of ethylene for fruit-ripening application. The role of ethylene in natural and artificial fruit ripening and the associated health hazards are well known. So there is a growing need for ethylene detection. This paper aims to highlight potential methods developed for ethylene detection by various researchers, including ours. Intense efforts by various researchers have been on since 2014 for societal benefits.,The paper focuses on types of sensors, fabrication methods and signal conditioning circuits for ethylene detection in ppm levels for various applications. The authors have already designed, developed a laboratory-based set-up belonging to the electrochemical and optical methods for detection of ethylene.,The authors have developed a carbon nanotube (CNT)-based chemical sensor whose performance is higher than the reported sensor in terms of material, sensitivity and response, the sensor element being multi-walled carbon nanotube (MWCNT) in comparison to single-walled carbon nanotube (SWCNT). Also the authors have developed infrared (IR)-based physical sensor for the first time based on the strong IR absorption of ethylene at 10.6 µm. These methods have been compared with literature based on comparable parameters. The review highlights the potential possibilities for development of portable device for field applications.,The authors have reported new chemical and physical sensors for ethylene detection and quantification. It is demonstrated that it could be used for fruit-ripening applications A comparison of reported methods and potential opportunities is discussed.

中文翻译：

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用于果实成熟应用的灵敏选择性乙烯检测方法综述

这项工作包括最近发展起来的各种基于实验室和便携式的方法，用于对果实成熟应用中的乙烯进行灵敏和选择性检测。乙烯在自然和人工水果成熟中的作用以及相关的健康危害是众所周知的。因此，对乙烯检测的需求越来越大。本文旨在强调包括我们在内的各种研究人员开发的用于乙烯检测的潜在方法。自 2014 年以来，各种研究人员一直在为社会效益做出大量努力。本文重点介绍了用于各种应用的 ppm 级乙烯检测的传感器类型、制造方法和信号调节电路。作者已经设计、开发了一种基于实验室的装置，属于用于检测乙烯的电化学和光学方法。作者开发了一种基于碳纳米管 (CNT) 的化学传感器，其性能在材料、灵敏度和响应方面都高于报道的传感器，与单壁碳相比，传感器元件是多壁碳纳米管 (MWCNT)。纳米管（SWCNT）。此外，作者基于乙烯在 10.6 µm 处的强红外吸收，首次开发了基于红外 (IR) 的物理传感器。这些方法已经与基于可比参数的文献进行了比较。该评论强调了开发用于现场应用的便携式设备的潜在可能性。作者报告了用于乙烯检测和量化的新型化学和物理传感器。