The major objectives of this project are to set up the metrological traceability of ambient air quality monitoring instruments, especially for ozone and other gaseous pollutants analyzers. Meanwhile, we also set up performance comparison plateforms for collocation comparisons of particulate matter (PM, including PM10 and PM2.5) monitoring instruments, to confirm the comparability of these PM monitors, and to establish a local PM monitoring database. The measurement accurace of monitors are based on the metrological traceability, which means connect the measurement results to reference standards by unbroken calibration chain. In general, the reference standards are maintained by authorized national institutes in each country and their quality and measurement assurance are verified through international comparison. To ensure the performance of developing analyzers and check if fit for purpose, OIML have set a four stage procedures including type approval, initial verification, periodic verification and checking. Based on the international trend and newly developed monitoring techniques, the tasks in this project can be divided into four parts: (1) Strength the capabilities of ambient ozone monitoring by purchasing new instrumentation and doing international key comparison with NIST in US and BIPM in Paris; (2) Validate the quality of monitors and related calibration gas mixtures for enhancing the ability of monitoring low concentration level of pollutants; (3) Setup new zero air supply system in quality qssurance laboratory lacated in Kaohsiung as well as its flow calibration facilities; (4) Upgrate the hardware and software of regular comparison plateform by setting up a data collection and stastistical analysis program and installing monitoring camaras. Also we expect the achievement can be implemented to replacement of old and formore enhacement the quality assurance practice.

air quality monitoring, performance verification, suspended particulate matter continuous monitoring instrument