科學園區半導體廠周界及沿海地區大氣氣膠特性研究

Characteristics of Aerosols Collected near the Semiconductor Plants of a Science Park and in a Coastal Area

林人杰(Jen-Chieh Lin)

指導教授 ： 陳瑞仁

國立屏東科技大學/工學院/環境工程與科學系所/碩士(2013年)

摘要

為瞭解半導體廠園區大氣氣膠特性，本研究於2012年春季（3月17~20日）及夏季（7月16~18日）於中科后里園區周界之后里聚落（以A表示）、中科后里辦公室（以 B表示）、鯉魚潭淨水廠（以C表示）及九甲聚落（以D表示）四採樣點以分道採樣器（Dichot）進行大氣懸浮粗、細懸浮微粒採樣，採得之樣品分析各PM上水溶性離子成分。此外，為瞭解台灣沿海地區大氣細微粒（PM2.5）特性，本研究於2013年2至4月間在屏東縣車城鄉海洋生物博物館旁以PQ200及Dichot進行大氣PM2.5採樣，並分析PM2.5上水溶性離子成分。研究結果顯示：中科后里園區春、夏兩季採樣期間四採樣點大氣PM2.5及PM2.5-10濃度以C之測值較高，D及A之值次之，而以B之值最小；園區周界大氣懸浮微（PM10）有近50~60%是由細微粒（PM2.5）所貢獻；且后里園區大氣PM2.5及PM2.5-10約一半質量是由水溶性離子組成，且粗細微粒上之水溶性離子均以SO42-、NO3-及NH4+等衍生性氣膠為主（近90%）；在細微粒（PM2.5）上以SO42-之含量最多，而在粗微粒（PM2.5-10）上以NO3-之含量最高。屏東沿海地區大氣PM2.5/ PM10值之範圍為0.32~0.70，平均值為0.46±0.08，其大氣懸浮微粒（PM10）以粗微粒（PM2.5-10）為主；大氣PM2.5及PM2.5-10質量分別有將近46%及40%是由水溶性離子所組成；而PM2.5上含量最高之三種水溶性離子依序為SO42-、NH4+及Na＋，PM2.5-10上含量最高之三種水溶性離子依序為Cl–、NO3–及Na＋；此外，PM2.5 上ΣIons中有近80%是二次氣膠（SO42-、NO3-及NH4+），PM2.5-10 上ΣIons中將近50%是海鹽（Cl–及Na＋）。PM10上之海鹽成分（Na＋及Cl–）及地殼元素（K＋、Mg2+及Ca2+）均主要分佈於粗微粒（PM2.5-10）上，而細微粒（PM2.5）約有為35%是由二次氣膠（SO42-、NO3-及NH4+）所貢獻。位於內陸之中科后里園區其大氣PM2.5、PM2.5-10及ΣIons上SO42-+NO3-+NH4+（secondary aerosols）之含量均較位於屏東沿海地區之值高，而中科后里園區大氣PM2.5、PM2.5-10及其ΣIons上海鹽（Na+及Cl-）及地殼元素（K+、Mg2+及Ca2+）之含量則均較屏東沿海地區之值低。

關鍵字

半導體廠 ； PM2.5 ； PM2.5-10 ； 水溶性離子 ； 沿海地區

並列摘要

In order to understand the characteristics of atmospheric aerosols in a semiconductor industrial park, we collected aerosol samples using Dichots at four sites (A, B, C, and D) in the Houli Park of Central Taiwan Science Park in spring (March 17−20) and summer (July 16−18) of 2012. The water-soluble ions of the collected coarse and fine particles were then analyzed. Additionally, aerosol samples were collected at the National Museum of Marine Biology and Aquarium, Kenting, Pingtung in February and April, 2013. The Dichot and PQ200 samplers were also used to collect atmospheric particles in the coastal area of southern Taiwan for their subsequent analysis of water-soluble ions in fine atmospheric aerosols (PM2.5). The results showed that during 2012 spring and summer in the semiconductor industrial park, the PM2.5 and PM2.5-10 were the highest at site C, followed by sites D and A, and the lowest at site B. Approximately 50−60% of PM10 in the park was contributed by fine particles. About half of PM2.5 and PM2.5-10 were water-soluble ions. ~90% of water-soluble ions were SO42-, NO3-, and NH4+. The most dominant water-soluble ion in PM2.5 was SO42-, while it was NO3- in PM2.5-10. The atmospheric PM2.5/ PM10 ratios in Pingtung costal area ranged 0.32-0.70 (average = 0.46±0.08). The atmospheric PM10 was mainly in the coarse size (PM2.5-10). Water-soluble ions accounted for about 46% and 40% of particle mass in the atmospheric PM2.5 and PM2.5-10, respectively. Among water-soluble ions, SO42- had the highest amount of mass, followed by NH4+ and Na＋ in PM2.5, while the order was Cl–＞NO3–＞Na＋ in PM2.5-10. Moreover, about 80% of PM2.5 ΣIons were secondary aerosols (SO42-、NO3-, and NH4+), and ~50% of PM2.5-10 ΣIons were sea salts (Cl–and Na＋). The sea salt compositions (Na＋and Cl–) and crustal elements (K＋、Mg2+ and Ca2+) of PM10 were chiefly in the coarse particles (~22% of PM2.5-10). About 35% of fine particles (PM2.5) were contributed by secondary aerosols (SO42-、NO3-, and NH4+).The atmospheric contents of secondary aerosols (SO42-+NO3-+NH4+) in the PM2.5 , PM2.5-10 , and ΣIons at the inland Houli Park of Central Taiwan Science Park were higher than those in the Pingtung costal area. However, the atmospheric contents of sea salts (Na+ and Cl-) and crustal elements (K+, Mg2+, and Ca2+) in the PM2.5 , PM2.5-10 , and ΣIons at the inland Houli Park of Central Taiwan Science Park were lower than those in the Pingtung costal area.

並列關鍵字

Semiconductor plant ； PM2.5 ； PM2.5-10 ； Water-soluble ions ； Coastal Area

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