Academic suggests sensors across HK to check air quality

Local | 20 Nov 2017 4:11 pm

The government is being urged to set up hundreds more sensors cross the city to improve air quality monitoring. 

There are currently 16 air quality monitoring stations that provide an hourly-updated index telling people about the health risks posed by pollution. 

But Alexis Lau, a professor at the University of Science and Technology's Division of Environment, said today that air quality can vary within a small area and the current number of sensors is not enough to reflect the air quality of a specific location.

He said these sensors used to be bulky and expensive, but they are becoming cheaper as new technology emerges.

Lau said the government should definitely consider using more sensors.

"As new sensor technology becomes available, it is much easier now compared with 10 years ago to be able to have sensor density much higher than what we have right now," he said.-RTHK

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