대기 오염 감시에 드론이 '최고'...적발률 '껑충'

The uses of drones is expanding... even to the monitoring of air pollution.
It's a far easier and faster way to inspect emissions from factories and is twice as effective in finding violators.
Our Choi Jeong-yoon reports.
A drone with equipment that absorbs air pollution flies into Banwol Industrial Complex, an area with many textile plants that emit smoke.
The drone stops at one of the smokestacks, sucks in air... and measures the amount of fine dust.
"The concentration of fine dust soared from 24 micrograms per cubic meter to 300 as the drone approached the top of the smokestack."
It takes just a minute for a drone to collect and measure one liter of air... much faster than sending a person to collect a sample manually, which takes three to four hours.
The drone measures and analyzes more than 60 types of air pollutants.
It's expected to make enforcement much more efficient at hard-to-access places.
Using drones, the detection rate of illegal emissions doubled to 42 percent.
Korea's Environment Ministry plans to implement the drone monitoring system to all regional environmental offices by the end of the year.
Choi Jeong-yoon, Arirang News.