Purpose The purpose of this paper is to provide a review of environmental sensing technologies and applications and to consider briefly the research effort. Design/methodology/approach This paper describes environmental sensing strategies and technologies for air, water quality and other monitoring applications. It concludes with a brief overview of research. Findings As a consequence of legislation, a technologically diverse family of sensors are used in a wide range of portable and fixed instruments to determine numerous polluting compounds entering and present in the environment. These play a critical role in protecting the environment, maintaining public health and monitoring global phenomena such as ozone depletion and artificial global warming. There is a widespread and technologically diverse research effort. Originality/value This paper provides a detailed insight into the sensors and instruments used in environmental monitoring.
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