Recently, amidst the towering industrial structures of the Ningbo Petrochemical Development Zone, a silver cylindrical device has begun rotating steadily.

As the screen at the zone’s environmental monitoring center lights up, volatile organic compounds (VOCs) within a 3-kilometer radius are revealed as if by a "revealing spell," displayed as a dynamic heatmap of red, yellow, and green on a 3D topographic model, marking the stable operation of the city’s first Fourier Transform Infrared (FTIR) remote monitoring system.

“This system acts like a ‘CT scanner’ for the atmosphere, not only detecting traces of VOCs around the clock but also identifying pollutant types with precision through spectral ‘fingerprints’,” explained Zhu Bin, Deputy Director of the Zone’s Ecological Environment Monitoring Station, standing before the monitoring screen. "Any anomalies trigger instant alerts to our digital oversight platform, enabling inspectors to pinpoint and investigate sources immediately. This is our new weapon in safeguarding the blue sky."