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为了研究家用小型汽车室内多溴联苯醚(PBDEs)的存在状态,对上海市7辆使用2 a以上的不同型号家用轿车进行了调查。采集形成于车窗玻璃内表面的有机膜,采用气相色谱-质谱联用仪(GCMS)对有机模样品进行了定性及定量分析,并根据表面膜-空气分配模型计算汽车室内空气中PBDEs的质量浓度。结果表明:13种待测多溴联苯醚(PBDEs)目标化合物均被检出;在车窗玻璃内表面有机膜中,Σ13PBDEs含量为19.63~26.13 ng/m2;家用小型汽车室内空气中Σ13PBDEs质量浓度为376.61~961.24 pg/m3;由于PBDEs的正辛醇-空气分配系数KOA与PBDEs的溴代度正相关,高溴代PBDEs在有机膜中的含量较高(实测BDE-209是其最主要的污染物),而低溴代PBDEs在空气中的含量较高(BDE-28是其最主要的污染物);与家庭、办公场所、公共场所等室内环境相比,家用小型汽车室内空气中PBDEs质量浓度处于较高水平。
In order to investigate the presence of polybrominated diphenyl ethers (PBDEs) in domestic small cars, seven different types of domestic sedans using more than 2 years were surveyed in Shanghai. The organic films formed on the inner surface of the window glass were collected and analyzed qualitatively and quantitatively by gas chromatography-mass spectrometry (GCMS), and the mass of PBDEs in the indoor air was calculated according to the surface membrane-air distribution model concentration. The results showed that 13 target compounds of polybrominated diphenyl ethers (PBDEs) were detected. The content of Σ13PBDEs was 19.63 ~ 26.13 ng / m2 in the organic membrane on the inner surface of the window glass, and the mass concentration of Σ13PBDEs in the domestic small car was 376.61 ~ 961.24 pg / m3. Because of the positive correlation between the n-octanol-air partition coefficient (KOA) of PBDEs and the degree of bromination of PBDEs, the content of high-brominated PBDEs in the organic membrane is higher (BDE-209 is the main pollutant ), And low brominated PBDEs in the air is high (BDE-28 is the most important pollutant). Compared with the indoor environment such as home, office space and public places, the indoor PBDEs mass concentration At a high level.