| 英文摘要 |
The main purpose of this project is to promote quality assurance and quality control (QA/QC) programs of certified laboratories issued by National Institute of Environmental Analysis (NIEA). Through laboratory programs and onsite inspection, proficiency evaluation (PE) samples and communicable conferences, supervision of certified laboratory management can be fully reinforced.
Among ninety-seven laboratories certified by NIEA (included air, water, drinking water, waste, toxics and noise-vibration categories), 39 laboratories, 11 onsite inspection, 40 PE samples (161 items) have been facilitated in this project. Two conferences and two inspection committee meetings also accommodates the goals of this project.
The inspection result indicated that the QA/QC programs and management system in most certified laboratories were satisfactory. However, there are some minor mistakes and possible problems, which should be further monitored and corrected to ensure the overall environmental sample analyses.
For air category, the 11 onsite inspection (5 stack and 6 ambient air) indicated that more than half stack sampling personnel understand sampling protocols, but not familiar with QA/QC requirements. Besides, the investigation of source characteristics and factors influencing stack gas sampling should be reinforced, such as sampling under positive or negative pressure. The ambient air monitoring encountered major problems in instrument maintaining and inspection. Further supervision by NIEA on mobile ambient air monitoring station was suggested.
Forty laboratory PE tests (161 items) were also conducted this year. In the air category (40 item), 10.0% unqualified result revealed a stable condition comparing to that of the previous year (10.8%). In water category (121 items), 9.1% unqualified result revealed a significant retrogress comparing to that of the previous year (3.2%).
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