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| Air pollution sensor ： ウィキペディア英語版 |
Air pollution sensor
Air pollution sensors are sensors that detect the presence of air pollution in an area - both in indoor and outdoor environments. They can come in the form of sensors for VOCs, particulate matter, and NOx.
The EPA maintains a repository of air quality data through the Air Quality System (AQS), where it stores data from over 10,000 monitors in the United States.
While use of these sensors was expensive in the past, the 2010s saw a recent trend towards the development of cheaper portable air-quality sensors that can be worn by individuals to monitor local air quality levels. These sensors, can then, in turn, help measure the spatiotemporal coverage and variety of chemical species, and empower individuals and communities to better understand their exposure environments and risks from air pollution.
A research group led by William Griswold at UCSD handed out portable air pollution sensors to 16 commuters, and found "urban valleys" where buildings trapped pollution. The group also found that passengers in buses have higher exposures compared to those in automobiles.
==References==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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