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首页> 外文期刊>Aerobiologia >Histochemical properties and trace element concentrations in Parietaria L. from urban sites (Palermo, Italy)
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Histochemical properties and trace element concentrations in Parietaria L. from urban sites (Palermo, Italy)

机译：来自城市地区（意大利巴勒莫）的Parietaria L.中的组织化学性质和微量元素浓度

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摘要

We examined leaf and pollen histochemical properties in Parietaria L. and measured trace element concentrations in urban sites in Palermo, Sicily, affected by different stress valence levels. Urban pollution affects histochemistry macro-, micro-, and toxic element concentrations in Parietaria. We therefore decided to determine whether this plant can be used as a simple biomonitor or bioaccumulator of pollution contaminants. Samples were collected at various sites in different periods. An increase in phenolic compound levels was a result of the impact of pollution. Histochemical characteristics and trace element concentrations varied according to the period, but not to the place, of sampling. Pollutant concentrations were the highest in the month of February 2002. Trace metal concentrations were the lowest in July. Our investigations have confirmed that Parietaria L. can be used to study the effects of trace elements in the atmosphere in urban sites; in fact, they are veritable accumulators, given that elevated levels of pollutants can be found on their structures with no visible morphological effects. There are differences in accumulation capacity according to the trace elements studied. Pollution alters the content of phenolic compounds and chemical elements in Parietaria L.
机译：我们检查了Parietaria L.中的叶和花粉的组织化学特性，并测量了西西里岛巴勒莫市受不同胁迫价水平影响的微量元素浓度。城市污染影响Parietaria中组织化学的宏观，微观和有毒元素浓度。因此，我们决定确定该植物是否可以用作污染污染物的简单生物监测器或生物蓄积器。在不同时期在不同地点收集样品。酚类化合物含量的增加是污染影响的结果。组织化学特征和微量元素浓度根据采样的时间而不是采样的位置而变化。 2002年2月的污染物浓度最高。7月的痕量金属浓度最低。我们的调查证实，Parietaria L.可用于研究城市地区大气中微量元素的影响。实际上，它们是名副其实的蓄积物，因为在其结构上发现的污染物含量较高，而没有明显的形态学影响。根据所研究的微量元素，累积容量存在差异。污染改变了Parietaria L.中酚类化合物和化学元素的含量。

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