Development of Continuous Monitoring Technology for Odorous Compounds in Ambient Air
Absrtact |
The major objective of this project was to develop the sampling and analysis technology of ambient volatile amine pollutants. The development of an auto-sampler for amine pollutants was also an important task. Seven chemicals, including methylamine (MA), ethylamine (EA), dimethylamine (DMA), isopropylamine (IPA), propoylamine (PA), diethylamine (DEA) and trimethylamine (TMA), were selected as the target compounds for testing the analysis method. The amines were collected in deionized water by impinger sampler in field and analyzed by ion chromatography in laboratory. For some of the peak shapes were overlapped in chromatogram for the close retention time, we modified the column operation temperature to change the retention time. As the test result shown, two column operation temperature must be applied to analyze all the 7 target compounds completely. The selected temperatures were 35.0°C and 17.5°C. The calibration curves of amine compounds in ion chromatography with suppressor column were quadratic equations. The coefficient of determination (COD, or R-square, R2) should be higher than 0.99. The R2 values of calibration curves for all the 7 compounds ware higher than 0.997 in our study. Supposing that the
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Keyword |
ambient
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