Characteristics and Source Apportionment of Ambient Volatile Organic Compounds in a Science Park in Central Taiwan
Characteristics and Source Apportionment of Ambient Volatile Organic Compounds in a Science Park in Central Taiwan
复制标题
DOI：
10.4209/aaqr.2015.02.0114
复制
发表时间：
2016-01-01
影响因子：
4
通讯作者：
Chen, Kang-Shin
中科院分区：
文献类型：
--
作者：
Cheng, Jen-Hsuan;Hsieh, Ming-Jui;Chen, Kang-Shin
空气样本是在台湾中部一个科学园区的四个地点同时使用不锈钢罐采集的。用气相色谱和质谱仪(GC/MS)分析了空气中的挥发性有机化合物(VOCs)。共鉴定出6个烃类中的18种挥发性有机化合物(C-1-C-8)。测量表明，3种优势物种是异丁酮(8.60+/-0.98ppbv)、甲苯(6.13+/-1.67 ppbv)和丙酮(6.03+/-2.79 ppbv)，而其他大多数物种的浓度都在1.00 ppbv以下。平均而言，最丰富的碳氢化合物是酮(56.95%)，其次是芳香族化合物(27.75%)、烷烃(8.33%)、氟代烷(3.40%)、氯代烷(2.47%)和腈(1.10%)。主成分分析(PCA)确定了PC1和PC2两个组分。PC1中有10种污染物和PC2中有8种污染物的负荷量大于0.8，表明PC1的排放源与高科技产业和交通有关，PC2的排放源与有机溶剂和制冷剂的逃逸排放有关。
Air samples were collected concurrently at four sites using stainless steel canisters in a science park in central Taiwan. The airborne volatile organic compounds (VOCs) were then analyzed using a gas chromatograph and a mass spectrometer (GC/MS). Eighteen volatile organic compounds (C-1-C-8) in six hydrocarbon groups were identified. Measurements reveal that the three dominant species were 2-butanone (8.60 +/- 0.98 ppbv), toluene (6.13 +/- 1.67 ppbv), and acetone (6.03 +/- 2.79 ppbv), while most other species were present at a concentration of below 1.00 ppbv. On average, the most abundant hydrocarbon group was ketones (56.95%), followed by aromatic compounds (27.75%), alkanes (8.33%), fluoroalkanes (3.40%), chloroalkanes (2.47%), and nitrile compounds (1.10%). Principal component analysis (PCA) identified two components PC1 and PC2. Ten species in PC1 and eight species in PC2 had loadings of greater than 0.8, suggesting that the emission sources of PC1 were related to high-tech industries and traffic, and those of PC2 were related to fugitive emissions of organic solvents and refrigerants.