| NUKLEONIKA 2008, 53(Suppl. 2):s37-s42
METROLOGICAL FEATURES OF A BETA ABSORPTION PARTICULATE
AIR MONITOR OPERATING WITH WIRELESS COMMUNICATION SYSTEM
Adrian Jakowiuk, Piotr Urbański, Edward Świstowski, Bronisław Machaj, Jan Pieńkos, Ewa Kowalska
Department of Radioisotope Instruments and Methods
Institute of Nuclear Chemistry and Technology,
16 Dorodna Str., 03-195 Warsaw, Poland
A system for measurements of particulate matter in the ambient air, employing beta absorption instrument AMIZ-2007 with wireless communication facilities based on GPRS technology, is presented. Uncertainty of measurements caused by the counting statistics was analyzed and it was found that at least 3 h of sampling time is needed to achieve coefficient of variation lower than 20% for the average concentration of particulate matter in the ambient air exceeding 10 µg/m3. Application of a C-14 beta ray source instead of Pm-147 improves sensitivity of the measurement ca. two times. Some results of on-line operation of the system with PM10 and PM2.5 samplers are also shown.
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