Introduction
Aniline is an aromatic amine compound, which is a colorless or pale yellow liquid with a strong
odor of benzene . The chemical formula of aniline is C6H5NH2, and its structural formula is NH2-
C6H5 contains an amino group (-NH2) and a phenyl group (-C6H5) . Aniline is an important
chemical raw material and intermediate with a wide range of applications], Aniline finds
extensive applications in various industries such as the dye industry, pharmaceutical industry,
plastic industry, rubber industry, pesticide industry, coatings industry, and more.
It should be noted that aniline is a volatile organic compound that can evaporate into vapor at
room temperature and normal pressure . Aniline vapor poses significant hazards to both human
health and the environment . Exposure to aniline vapor can potentially harm human health
through inhalation, skin contact, or ingestion. Such exposure can result in severe health
consequences, including but not limited to coma, convulsions, poisoning, or even fatality. . Some
people may also be susceptible to allergic reactions, such as respiratory allergies, skin itching, or
eczema . Concerning the environment, aniline vapor can pollute the air and water systems,
posing a threat to the ecosystem . The dispersal of aniline vapor through wind or water can lead
to contamination of these resources, causing pollution. Moreover, the potential leakage of aniline
can result in harm to soil and groundwater systems, ultimately exacerbating the negative
environmental impact.
Therefore, when producing, storing, or using aniline, it is crucial to take strict safety measures to
control the discharge of aniline vapor and prevent any leakage from occurring. Gas sensor
designed to detect the concentration of target gases. Its primary role is to continuously monitor
the concentration of target gases and issue an alert as soon as the concentration level exceeds a
certain threshold. Aniline vapor sensors can aid in averting further damage to humans and the
environment caused by target gases. Once triggered, appropriate personnel can take immediate
measures to address the situation. These sensors are particularly advantageous in aniline
production, storage, and usage environments, where tracking the level of aniline vapor
concentration is vital in ensuring safety. By utilizing aniline vapor sensors, the likelihood of
harm caused by aniline vapor to humans and the environment can be significantly minimized,
thereby enhancing production safety and preserving human and environmental health.
Although numerous comprehensive reviews on gas sensors and sensing materials have been
published there is still a lack of a systematic review specifically focusing on sensors and sensing
materials for aniline vapor. This review provides an overview of sensing platforms and materials
utilized for aniline vapor detection, encompassing semiconductor sensors, quartz crystal
microbalance (QCM) sensors, fluorescence sensors, and other sensors. Through a thorough
investigation and discussion of their sensing performances and mechanisms, we aim to furnish a
comprehensive summary of published work on aniline vapor sensors and highlight potential
future development directions. Our goal is to provide researchers with a robust foundation to
enhance aniline vapor sensor technology.
REFRENCE
https://www.sciencedirect.com/science/article/abs/pii/S0924424723005253
