The windows could be harboring toxic pollutants. Dirty windows may harbor potentially harmful pollutants behind protective films of fatty acids from cooking emissions, which can linger for extended periods of time. A recent study conducted by scientists at the University of Birmingham found that
The windows could be harboring toxic pollutants.
This means that when they collide with a solid surface, like a window, they create a thin, self-organized film that slowly accumulates and can only be gradually broken down by other chemicals in the atmosphere. The film will become rougher throughout this process and draw more water from the humidity in the air. Furthermore, harmful pollutants have the potential to become trapped within this resilient crust, where they are then shielded from breakdown in the atmosphere.
The team worked on laboratory ‘proxies’ – samples of material engineered in the lab to approximate ‘real world’ samples. These were spun into super-thin films of pollution, just a few tens of nanometres in thickness.
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