Environmental Botany Laboratory, National Botanical Research Institute, 226 001, Lucknow, India.
Environ Monit Assess. 1995 Jan;34(1):13-25. doi: 10.1007/BF00546243.
The changing levels of SO2 and Pb in the air and vegetation, along ten road transections of Lucknow city (having varying traffic densities) have been investigated, with a view to authenticate a possible correlation between SO2 and Pb concentration in air and sulphate and lead accumulation in the foliage of avenue trees. The study showed that the road transection at Alambagh (traffic density 4835 for 2 h) revealed the highest level of pollutants (SO2, 202 µg m(-3); SPM, 1080 µg m(-3); and lead, 2.96 µg m(-3), 2 h average) in air, as well as in the foliage of plants, whereas the road stretches with less traffic density correspondingly showed lower levels of pollutants. Pb and sulphate in leaves were found to be positively correlated with Pb and SO2 pollution in the air. Results suggest that Dalbergia sissoo and Calotropis procera are the ideal plant species to monitor as indications of Pb and SO2, respectively, in the air.
对勒克瑙市十条具有不同交通密度的道路沿线的空气和植被中 SO2 和 Pb 的含量变化进行了调查，以期证实空气中 SO2 和 Pb 浓度与林荫道树木叶片中硫酸盐和铅积累之间可能存在的相关性。研究表明，Alambagh 路段（交通密度为 2 小时内 4835 辆）空气中的污染物（SO2，202µg m(-3)；SPM，1080µg m(-3)；和铅，2.96µg m(-3)，2 小时平均值）以及植物叶片中的污染物含量最高，而交通密度较低的道路伸展段相应地显示出较低水平的污染物。叶片中的 Pb 和硫酸盐与空气中的 Pb 和 SO2 污染呈正相关。结果表明，对于监测空气中的 Pb 和 SO2，分别以紫檀和黄槿为理想的植物物种。
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