Real-time measurements of fluorescent aerosol particles in a living laboratory office under variable human occupancy and ventilation conditions

The abundance of super-micron biological and abiotic particles in occupied indoor environments can be influenced by time-dependent changes human-associated emissions building ventilation conditions. Real-time measurements fluorescent aerosol (FAPs) were integrated with a sensing platform to evaluate the influence human occupancy on temporal dynamics living laboratory office. Concentrations size distributions FAPs measured via laser-induced fluorescence (LIF). Human occupants identified as major source mechanically ventilated office buildings. Mass concentrations larger than 3 μm scaled Detailed single particle data indicated that enriched atmosphere specific FAP types varied morphology. Office strong emitters ABC-type (number mass), lesser extent, A-type AB-type (mass), B-type (mass). Such are related common bacterial fungal aerosols clothing fabric fibers. introduction natural double skin glass façade increased due efficient transport outdoor into While LIF provides valuable real-time dynamics, it lacks specificity cannot fully resolve origins spaces.