為探討南台灣地區奈米微粒粒徑分布與成長機制，本研究主要以南部懸浮微粒超級測站中之2010年6月至2011年2月之奈米微粒連續監測資料與其他氣象資料、氣固相汙染物資料進行奈米微粒之形成與成長機制分析。
研究方法主要以粒徑分布與顆粒濃度之變化篩分，並以波峰分離法處理後針對其成長速率與成長定律分析，針對其結果進行事件之歸類，依照其波峰變化類型之比例定義為:濃度增加粒徑增加、濃度增加粒徑減少、濃度減少粒徑增加、濃度減少粒徑減少與其他等五項類型。而成長機制分析結果濃度增加粒徑增加之類型主要相關汙染物為NOx、CO、BC、NH3相關，因此研判主要來源為交通源、工業源直接排放，而具明顯粒徑與濃度變化之其他類事件主要與NH3相關，由分析結果指出初期成核之微粒成長與交通源排放之揮發性有機物相關，而微粒濃度達最高後粒徑成長之機制轉為凝結機制為主導。

In order to discussion of the size distribution of nanoparticles and formation mechanism in the southern Taiwan. The southern supersite of the SMPS data and gas-solid phase pollutant data were used in this study from June 2010 to February 2011. The study focus on the nanoparticles formation and growth mechanism in the southern Taiwan.
The research methods to determine the types of events by particle size distribution and the change of number concentration, and calculate the growth rate and growth law to analysis after data inversion. The change of particle size distribution and number concentration for the type classified as (1).The particle size and the number concentration both increase (2).The number concentration increase and the particle size decrease (3).The number concentration decrease and the particle size increase (4). The particle size and the number concentration both increase and (5).Else.
The result of growth mechanism analysis that the particle size and the number concentration both increase type event are relate with NOx, CO, BC and NH3. Therefore, to determine the main sources of mobile source and industrial source. Significant changes in particle size and number concentration in the other types of events were selected for analysis, and the comparison results with NH3-related. Results by comparison, the initial nucleation of the nanoparticles growth rate and Mobile source emissions of volatile organic compounds are related. After reached the highest particle number concentration, coagulation mechanism leading the growth of nanoparticles.

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行政院勞工委員會勞工安全衛生研究所，氣膠原理與應用，民國84年