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首页> 外文期刊>Environmental Pollution >Biomonitoring Airborne Parent And Alkylated Three-ring Pahs In The Greater Cologne Conurbation I: Temporal Accumulation Patterns
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Biomonitoring Airborne Parent And Alkylated Three-ring Pahs In The Greater Cologne Conurbation I: Temporal Accumulation Patterns

机译：在科隆大都市地区对空中父母和烷基化三环巴伊斯生物监测的研究I：时间积累模式

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摘要

Polycyclic aromatic hydrocarbons (PAHs) comprise an important group of air pollutants, with three-ring components (PAH-3) often dominating. Spatiotemporal variation in atmospheric PAH-3 can be analyzed by biomonitoring but high vapour pressure and low octanol-air-partitioning of PAH-3 cause dynamic accumulation on plant surfaces. This study for the first time shows that PAH-3 exhibit systematic accumulation trends on pine needles of 3-48 months of exposure time at six sites in Germany. Correlation of needle exposure time with PAH-3 concentration was r~2 = 0.83 for phenanthrene and methyl-phenanthrenes, r~2 = 0.77 for cyclopenta[def]phenanthrene, r~2 = 0.60 for dibenzothiophene, r~2 = 0.57 for dimethylphenanthrenes and r~2 = 0.32 for retene. Variations in PAH-3 for summer and winter collected needles emphasize vegetation-air-partitioning influence on cumulative PAH-3 loads. PAH-3 ratios calculated for needle cohorts indicate persistence of original PAH patterns thus demonstrating the source-diagnostic potential of pine needle biomonitoring, which is utilized in part II of this study where spatial distribution of PAH-3 is investigated and related to emission sources.
机译：多环芳烃（PAHs）构成了重要的一组空气污染物，其中三环组分（​​PAH-3）通常占主导地位。可以通过生物监测来分析大气中PAH-3的时空变化，但是PAH-3的高蒸气压和低辛醇-空气分配会导致植物表面动态积聚。这项研究首次表明，在德国的六个地点，PAH-3在暴露时间为3-48个月的松针上表现出系统的积累趋势。菲和甲基菲的针头暴露时间与PAH-3浓度的相关性为r〜2 = 0.83，环戊五[d]菲为r〜2 = 0.77，二苯并噻吩为r〜2 = 0.60，二甲基菲为r〜2 = 0.57视黄醇的r〜2 = 0.32。夏季和冬季收集的针头PAH-3的变化强调了植被-空气分配对累计PAH-3负荷的影响。计算出的针头队列的PAH-3比率表明原始PAH模式的持续存在，从而证明了松针生物监测的源诊断潜力，该方法在本研究的第二部分中得到了利用，该部分研究了PAH-3的空间分布并与排放源相关。

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