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Evaluation of Acer rubrum Tree Bark as a Bioindicator of Atmospheric Heavy Metal Pollution in Toronto, Canada
Water, Air, & Soil Pollution ( IF 2.9 ) Pub Date : 2020-07-17 , DOI: 10.1007/s11270-020-04758-w
Muhammad Yousaf , Khakhathi L. Mandiwana , Khurram S. Baig , Julia Lu

The concentrations of heavy metal (copper (Cu), mercury (Hg), manganese (Mn), nickel (Ni), lead (Pb), and zinc (Zn)) were measured in Acer(A.) pseudoplatanus tree bark to evaluate its suitability as a bioindicator of air pollution in downtown Toronto, Canada. The analysis of digested tree bark samples was carried out by inductively coupled plasma optical emission spectrometry (ICP-OES) for Cu, Mn, Ni, Pb, and Zn, whereas a mercury analyzer was used to quantify Hg without sample pre-treatment. The concentrations of the analyzed heavy metals were found to be 26.4 μg g−1 for Cu, 51.7 μg kg−1 for Hg, 55.3 μg g−1 for Mn, 6.55 μg g−1 for Ni, 26.5 μg g−1 for Pb, and 95.2 μg g−1 for Zn. Analysis of background control tree barks (collected in a remote area) showed that maple tree barks in Toronto were strongly enriched with heavy metals, with their mean accumulation factors ranging between 1.88 (Mn) and 12.54 (Pb). The tree bark was also found to distinguish between impacted areas as the locations close to the roads with elevated vehicular traffic showed higher metal contents. Therefore, it could be concluded that A. pseudoplatanus tree bark is a good bioindicator of atmospheric heavy metal pollution.



中文翻译:

在加拿大多伦多评估宏cer树皮作为大气重金属污染生物指标的评估

AcerA.假铂金树皮中测量了重金属(铜(Cu),汞(Hg),锰(Mn),镍(Ni),铅(Pb)和锌(Zn))的浓度以评估它是否适合作为加拿大多伦多市中心的空气污染生物指标。消解的树皮样品的分析通过电感耦合等离子体发射光谱法(ICP-OES)对Cu,Mn,Ni,Pb和Zn进行分析,而汞分析仪无需样品预处理即可对Hg进行定量。的浓度进行分析的重金属被认为是26.4微克克-1对Cu,51.7微克千克-1对Hg,55.3微克克-1为锰,6.55微克克-1为镍,26.5微克克-1用于Pb和95.2微克克-1为锌。对背景对照树皮(在偏远地区收集)的分析表明,多伦多的枫树树皮富含重金属,其平均积累因子在1.88(Mn)和12.54(Pb)之间。还发现树皮可以区分受影响的区域,因为靠近车辆交通量较高的道路的位置显示出较高的金属含量。因此,可以得出结论,假铂金树树皮是大气中重金属污染的良好生物指标。

更新日期:2020-07-17
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