玻璃表面PAHs垂向分布特征与室内外对比研究

发布时间：2018-01-24 01:20

本文关键词： 多环芳烃玻璃表面垂向分布室内与室外　出处：《长江流域资源与环境》2017年05期 　论文类型：期刊论文

【摘要】：利用GC-MS对上海市玻璃表面有机膜中PAHs浓度进行了定量分析。结果表明随着楼层的增加,10层居民楼玻璃表面PAHs浓度出现先增加后减少的趋势,最高浓度出现在3层(736 ng/m~2),最低在9层(346 ng/m2);17层公寓楼PAHs浓度则是先减少后增加再减少的趋势,最高浓度出现在9层(2 338 ng/m~2),最低在16层(564 ng/m~2)。TOC与PAHs相关性分析暗示除TOC外,玻璃表面PAHs富集可能还受控于其他因素。10层居民楼主要以3环和4环PAHs为主;而17层公寓楼则以4环为主。玻璃外表面PAHs浓度(555 ng/m~2)远高于内表面(308 ng/m~2);外表面主要以Phe、Pyr、Chry、Fluo和Fl为主;内外表面低环PAHs比值接近于1,高环比值基本上低于0.6。TEQ值虽然较低,但生态风险仍不能忽视。
[Abstract]:The concentration of PAHs in the organic film on glass surface in Shanghai was quantitatively analyzed by GC-MS. The results showed that the concentration of PAHs was increased with the increase of floor. The concentration of PAHs on the glass surface of 10 stories of residential buildings increased first and then decreased. The highest concentration appeared in 3 layers 736 ng / m ~ (2) and the lowest in 9 layers was 346 ng / m ~ (2); The concentration of PAHs in 17-storey apartment buildings decreased first and then increased, and the highest concentration appeared in 9 floors (2 338 ng / m ~ (2)). The analysis of the correlation between ng/m~2).TOC and PAHs at the lowest level of 16 layers suggested that TOC was the exception. The enrichment of PAHs on glass surface may also be controlled by other factors. The PAHs concentration on the outer surface of the glass is 555 ng / m ~ (-2), which is much higher than that on the inner surface (308 ng / m ~ (2)). The outer surface was mainly composed of Pyrrus chrylosa Fluo and Fl. The low PAHs ratio of inner and outer surface is close to 1, and the high loop ratio is lower than 0.6.TEQ, but the ecological risk can not be ignored.
【作者单位】：盐城师范学院城市与规划学院;华东师范大学地理科学学院;
【基金】：国家自然科学基金项目(41471060,41601594) 江苏省自然科学基金项目(BK20160446) 江苏省高校自然科学研究重大项目(14KJA170006)~~
【分类号】：X592
【正文快照】： 多环芳烃(polycyclic aromatic hydrocarbons,PAHs)是一类在环境中具有生物累积性、随大气环流长距离迁移的持久性有机污染物(persistentorganic pollutants,POPs),主要来源于煤、石油和生物质的不完全燃烧过程[1]。城市是自然环境、人文环境和社会经济相互耦合的环境综合体,

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