AAAR 37th Annual Conference October 14 - October 18, 2019 Oregon Convention Center Portland, Oregon, USA
Abstract View
Lab-based Test of Palm-sized Aethalometer for Indoor Aerosol Measurement
JEONGHOON LEE, KOREATECH
Abstract Number: 836 Working Group: Instrumentation and Methods
Abstract Despite versatile use of a small aethalometer at various research fields such as black carbon measurements and personal exposure studies, it is difficult to find the information about how the palm-sized aethalometer performs. Encouraged by this, a real-time test was carried out using indoor aerosol to provide performance characteristics for proper usage. According to the preliminary results, the palm-sized aethalometer exhibited excellent performance at some conditions though it showed poor performance sometimes, for example, when the device was directly connected to a power adapter. Another example includes the production of negative values under low concentration conditions. It is important to note that a verification process before use may be required at a certain condition. Toward this, 10 days long consecutive test was performed. Attenuation value (ATN) calculated from the reference signal and the measured signal was monitored and compared with the recorded attenuation. A discussion including more detailed explanation will be presented regarding what caused poor performance of the palm-sized aethalometer.