The main purpose of this project is aiming at non-periodically inspecting all current Environmental Protection Administration’s Air Quality Monitoring Stations to guarantee the quality of maintenance work and monitoring network data. The work content mainly included (1) the execution of monitoring instruments performance audit 80 stations/per year, (2) the execution of monitoring instruments functional check 486 stations/per year, (3) the introduction of the latest technical development in advanced countries in performance audit of air quality monitoring stations. The performance audit primarily inspected the error between the monitoring data and the standard value (accuracy), there were 163 stations completed within two years (2880 times). The whole result of performance audit demonstrated the quality of monitoring stations’ data was good, and the degree of satisfaction presented escalating trend year by year. The satisfaction degree of recent four years respectively was 93.8%, 93.1%, 95.9%, and 96.0%. According to the monitoring instrument type, the highest satisfaction degree was 98.9% performed by gaseous monitoring instruments, the second one was 98.2% done by particle monitoring instruments and the lowest one was 91.2% done by meteorological monitoring instruments. Another functional check was mainly to focus on non-periodically surveys and assessments on stations, facility equipments, the document recording conditions, the monitor operation conditions, the unusual data check and the monitoring instruments precision inspection. There were totally 972 functional checks (128904 times). The whole result of functional check demonstrated the defect rate only 0.9% which presented declining trend year by year due to the high quality in sustaining operation and maintenance of monitoring stations. According to different kind of functional check result, the unqualified defects were shown in sequence. The highest defect rate was accuracy check 1.88%, the second was meteorological instruments 1.23%, station & facility equipments 1.22%, then document recording conditions 0.61% and finally malfunctioned monitors 0.59%. In order to enhance the quality and technology of national performance audit, this project collected the latest technology of European and American advanced countries in this domain and proposed that 〝overseas performance audit’s technique assessment report〞. In this report, it stated the comparative table between national and international team in their execution methods in AQMS Performance Audit and Functional Check. Some new methods will be introduced and adopted after assessed by Environment Protection Administration to promote the quality of current domestic Air Quality Monitoring Instrument Performance Audit projects.

Air Quality Monitoring Stations,Quality Assurance, Audit