| 不同功能区表层土中全氟化合物污染指纹及其来源解析 |
| 摘要点击 3243 全文点击 1561 投稿时间：2013-11-13 修订日期：2013-12-12 |
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| 中文关键词 功能区 表层土 全氟化合物 全氟辛酸 全氟辛烷磺酸 污染指纹 源解析 高效液相色谱-质谱联用 |
| 英文关键词 functional areas surface soil perfluorinated compounds (PFCs) perfluorooctane acid (PFOA) perfluorooctane sulfonate (PFOS) contamination fingerprints source apportionment high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) |
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| 中文摘要 |
| 为探究区域功能对其表层土中全氟化合物（perfluorinated compounds， PFCs）污染指纹与含量水平的影响，采用固相萃取分离富集、高效液相色谱-质谱联用与源解析相结合的方法，分析了深圳市公园、居民小区、十字路口、工厂周边4个功能区和城市背景共76份表层土中14种PFCs的含量. 结果表明，深圳市表层土总PFCs（∑PFCs）含量受区域功能影响显著，呈工厂周边（P<0.001）>>十字路口（P<0.01）>>居民小区（P<0.05）>>公园>城市背景的分布. 其中工厂周边、居民小区、公园表层土中PFCs呈中链（P<0.05）>>长链>短链的分布，而十字路口则呈中链≈短链（P<0.05）>>长链的分布. 同时，以全氟辛烷磺酸、全氟辛酸、全氟十三酸为主要标志物的3个主成分可以解释深圳表层土超过81%的∑PFCs，十字路口以及电镀、油漆厂周边表层土呈现出较清晰的PFCs污染指纹. |
| 英文摘要 |
| In order to explore the effect of regional functions on the pollution fingerprints and levels of perfluorinated compounds (PFCs), principal components analysis was combined with high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) and solid phase extraction enrichment in this research to analyze the levels of 14 PFCs species in 76 surface soil samples, which were collected from 4 functional regions, namely parks, communities, crossroads and surroundings of factories, as well as the urban background of Shenzhen. The results showed that regional functions had significant effect on total PFCs (∑PFCs), which ranked as the following: surroundings of factories(P<0.001)>>crossroads(P<0.01)>>communities(P<0.05)>>parks>urban background. The distribution of PFCs was in the order of medium- (P<0.05)>>long->short-chain PFCs in surroundings of factories, communities and crossroads, while in the order of medium- ≈ short- (P<0.05)>>long chain PFCs in crossroads. Over 81% of ∑PFCs in the surface soil of Shenzhen could be attributed to the three principal components, represented by perfluorooctane sulfonate, perfluorooctane acid and perfluorotridecanoic acid, respectively. PFCs fingerprints were clearly shown in crossroads, as well as in surroundings of electroplating and paint factories. |
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