Abstract
AbstractMonitoring of atmospheric pollution using Aleppo bark as a bioindicator was carried out in the industrial area surrounding the Al‐Hussein thermal power station and the oil refinery at Al‐Hashimyeh town, Jordan. The concentrations of heavy metals (copper, lead, cadmium, manganese, cobalt, nickel, zinc, iron, and chromium) were analyzed in bark samples collected from the study area during July 2004. The results showed that high levels of heavy metals were found in tree bark samples retrieved from all studied sites compared with the remote reference site. This is, essentially, due to the fact that the oil refinery and the thermal power plant still use low‐quality fuel oil from the by‐products of oil refining. Automobile emissions are another source of pollution since the study area is located along a major heavy‐traffic highway. It was found that the area around the study sites (Al‐Hashimyeh town, Zarqa) is polluted with high levels of heavy metals. Pine bark was found to be a suitable bioindicator of aerial fallout of heavy metals in arid regions.
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