Masih Jamson, Dyavarchetty Swathi, Nair Ashwati, Taneja Ajay, Singhvi Raj
Department of Chemistry, Wilson College, Mumbai 400007, India.
Department of Chemistry, Dr. Bhimrao Ambedkar University, Agra 282002, India.
Environ Technol Innov. 2019;13:179-188. doi: 10.1016/j.eti.2018.10.012.
PM particulate matter (PM) and their associated polycyclic aromatic hydrocarbons (PAHs) were studied at Urban and Sub-urban sites in the western coast of India. The concentration of PM ranged from 66.29 μg m to 182.15 μg m, being the highest at Sub-urban site than the urban site. There were total six carcinogenic PAHs found to be dominated in particulate samples at these locations. The general trends observed for individual carcinogenic PAHs concentration at urban location was, benzo(a)pyrene (BaP)<benzo(k)fluoranthene (BkF)<benzo(ghi)perylene (BghiP)<benzo(b)fluoranthene (BbF)<benzo(e)pyrene (BeP)<indeno(1,2,3-cd)pyrene (I123P). Whereas, at Sub-urban location the concentration was found to be, (BaP) < (BkF) < (BeP) < (BghiP) < (I123P) < (BbF). PAHs diagnostic ratio and Principal component analysis was used to find out the main sources of PAHs. The results of PAHs diagnostic ratio and Principal component analysis revealed that vehicular emission of gasoline and diesel powered vehicles were the main source of individual PAHs at both the locations. BaP equivalent exposure (BaPeq) were calculated to find out the total carcinogenicity of PAHs at both sites, and the results revealed that the mean concentration of PAHs were found to be lower when their contributions to carcinogenicity were taken into account.
在印度西海岸的城市和郊区地点对颗粒物（PM）及其相关的多环芳烃（PAHs）进行了研究。PM的浓度范围为66.29μg/m至182.15μg/m，郊区地点的浓度高于城市地点。在这些地点的颗粒物样本中总共发现了六种致癌多环芳烃占主导地位。在城市地点观察到的单个致癌多环芳烃浓度的一般趋势是，苯并(a)芘（BaP）<苯并(k)荧蒽（BkF）<苯并(ghi)苝（BghiP）<苯并(b)荧蒽（BbF）<苯并(e)芘（BeP）<茚并(1,2,3-cd)芘（I123P）。而在郊区地点，浓度顺序为，（BaP）<（BkF）<（BeP）<（BghiP）<（I123P）<（BbF）。使用多环芳烃诊断比值和主成分分析来找出多环芳烃的主要来源。多环芳烃诊断比值和主成分分析的结果表明，汽油和柴油动力车辆的尾气排放是这两个地点单个多环芳烃的主要来源。计算了苯并(a)芘等效暴露量（BaPeq）以确定两个地点多环芳烃的总致癌性，结果表明，当考虑到它们对致癌性的贡献时，多环芳烃的平均浓度较低。
