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首页> 外文期刊>Atmospheric environment >Interspecies And Interregional Comparisons Of The Chemistry Of Pahs And Trace Elements In Mosses Hylocomium Splendens (hedw.) B.s.g. And Pleurozium Schreberi (brid.) Mitt. From Poland And Alaska
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Interspecies And Interregional Comparisons Of The Chemistry Of Pahs And Trace Elements In Mosses Hylocomium Splendens (hedw.) B.s.g. And Pleurozium Schreberi (brid.) Mitt. From Poland And Alaska

机译：苔藓Hylocomium Splendens（hedw。）B.s.g.的Pahs和微量元素化学的种间和区域间比较。还有Pleurozium Schreberi（新娘）Mitt。来自波兰和阿拉斯加

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Comparative biogeochemical studies performed on the same plant species in remote areas enable pinpointing interspecies and interregional differences of chemical composition. This report presents baseline concentrations of PAHs and trace elements in moss species Hylocomium splendens and Pleurozium schreberi from the Holy Cross Mountains (south-central Poland) (HCM) and Wrangell-Saint Elias National Park and Preserve (Alaska) and Denali National Park and Preserve (Alaska). Total PAH concentrations in the mosses of HCM were in the range of 473-2970 μg kg~(-1) (dry weight basis; DW), whereas those in the same species of Alaska were 80-3390 μg kg~(-1) DW. Nearly all the moss samples displayed the similar ring sequence: 3 > 4 > 5 > 6 for the PAHs. The 3 + 4 ring/total PAH ratios show statistically significant differences between HCM (0.73) and Alaska (0.91). The elevated concentrations of PAHs observed in some sampling locations of the Alaskan parks were linked to local combustion of wood, with a component of vehicle particle- and vapor-phase emissions. In HCM, the principal source of PAH emissions has been linked to residential and industrial combustion of coal and vehicle traffic. In contrast to HCM, the Alaskan mosses were distinctly elevated in most of the trace elements, bearing a signature of the underlying geology. H. splendens and P. schreberi showed diverse bioaccumulative capabilities of PAHs in all three study areas.
机译：在偏远地区对同一植物物种进行的比较生物地球化学研究，可以查明物种间和区域间化学成分的差异。本报告介绍了圣十字山脉（波兰中南部），弗兰格尔-圣伊莱亚斯国家公园和自然保护区（阿拉斯加）和德纳利国家公园和自然保护区的苔藓物种Hylocomium splendens和Pleurozium schreberi的苔藓物种中PAHs和微量元素的基准浓度（阿拉斯加州）。 HCM苔藓中PAH的总浓度在473-2970μgkg〜（-1）（以干重计; DW）的范围内，而阿拉斯加相同物种中的PAH浓度为80-3390μgkg〜（-1）。 DW。几乎所有的苔藓样本都显示出相似的环序列：PAHs的环序列为3> 4> 5> 6。 3 + 4环/总PAH比显示HCM（0.73）和阿拉斯加（0.91）之间的统计学差异。在阿拉斯加公园的某些采样点观察到的PAHs浓度升高与木材的局部燃烧有关，其中含有车辆颗粒物和气相排放物。在HCM中，PAH排放的主要来源已与居民和工业燃烧的煤炭以及车辆交通联系在一起。与HCM相比，阿拉斯加的苔藓在大多数痕量元素中明显升高，具有潜在地质特征。 H. splendens和P. schreberi在所有三个研究领域均显示出PAHs的多种生物蓄积能力。

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