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Khani, M. R./ S. Pirasteh/ G. Shahabpoor/ S. A. Dehghani 2011: Biomonitoring of air pollution sulfur dioxide (SO2) by lichen, Lecanora mularis [sic muralis]. - Research Journal of Chemistry and Environment 15(2): 933-938. [RLL List # 224 / Rec.# 33212]
Keywords: Bioindicator/ Lichen/ Monitoring/ Sulfur dioxide/ animal/ atmospheric pollution/ bioindicator/ biomonitoring/ dose-response relationship/ health risk/ industrial location/ lichen/ phytotoxicity/ public health/ sulfur dioxide/ urban area/ urban atmosphere
Abstract: Sulfur dioxide is one of the important gas pollutants that have an irreparable impact on human, plants, animals and objects. Biological indicators are air pollutants indicators. They are appropriate conductive for air pollution controlling in urban and industrial environments. Lichens are one of the bioindicators and they have been used in such researches. Therefore, survey of efficiency and effectiveness biomonitoring of SO2 with use of lichen, Lecanora mularis has been considered in this research. Lecanora muralis was placed into the special bags and exposed with 40, 100 and 200 ppb SO2 for three hours. Then chlorophyll (chl. a, chl. b andchl. a+bj and ratio ofOD 435/415 was measured by extracting 20 mg net weight of lichen in 10 ml DMSO. This research determines that the average of chlorophyll (chl. a, chl. b) is in control and therefore, the exposed samples to SO2 is 94.1% and 77.3%, respectively. This study shows that there is a direct relationship between determination and pollutant's concentration in all cases.
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