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Source apportionment and emission projections of heavy metals from traffic sources in India: Insights from elemental and Pb isotopic compositions
Journal of Hazardous Materials ( IF 12.2 ) Pub Date : 2024-09-11 , DOI: 10.1016/j.jhazmat.2024.135810 Divyangana Lahiri 1 , Iravati Ray 1 , Rupam Ray 1 , Ilindra Venkata Satya Chanakya 2 , Mohd Tarique 3 , Sambuddha Misra 2 , Waliur Rahaman 3 , Manish Tiwari 3 , Xianfeng Wang 4 , Reshmi Das 5
Journal of Hazardous Materials ( IF 12.2 ) Pub Date : 2024-09-11 , DOI: 10.1016/j.jhazmat.2024.135810 Divyangana Lahiri 1 , Iravati Ray 1 , Rupam Ray 1 , Ilindra Venkata Satya Chanakya 2 , Mohd Tarique 3 , Sambuddha Misra 2 , Waliur Rahaman 3 , Manish Tiwari 3 , Xianfeng Wang 4 , Reshmi Das 5
Affiliation
The study investigates the sources of metals in urban road dusts using elemental concentration and Pb isotopic ratios. The elemental concentrations are also utilized to determine the present heavy metal emissions as well as projected emissions till 2045. Bayesian mixing model for source apportionment highlights the significant contributions of both exhaust and non-exhaust sources to the metal-enriched urban road dusts, with each contributing approximately 40 %. Emission analysis reveals that India’s projected electric vehicle (EV) penetration may not be sufficient to suppress the metal emissions from vehicular exhausts. Further challenge is posed by high metal concentrations in the non-exhaust sources, that dominates the emission of some metals compared to exhaust sources. If the metal concentrations remain unchanged, the emission analysis predicts alarming increases in total emissions from all the exhaust and non-exhaust sources by 174 %, 176 %, 163 % and 184 % for Ni, Cu, Zn and Pb, respectively, from 2022 to 2045. Thus, it is crucial to reduce the metal concentrations in traffic emission sources and also impose better regulatory measures to improve the urban metal pollution scenario.
中文翻译:
印度交通来源重金属的来源分配和排放预测:来自元素和 Pb 同位素组成的见解
该研究使用元素浓度和 Pb 同位素比值调查了城市道路粉尘中金属的来源。元素浓度还用于确定目前的重金属排放量以及到 2045 年的预计排放量。用于源分配的贝叶斯混合模型强调了废气源和非废气源对富含金属的城市道路粉尘的显著贡献,各占约 40%。排放分析显示,印度预计的电动汽车 (EV) 渗透率可能不足以抑制汽车尾气的金属排放。非废气源中的高金属浓度带来了进一步的挑战,与废气源相比,非废气源中的高金属浓度是某些金属排放的主要因素。如果金属浓度保持不变,排放分析预测,从 2022 年到 2045 年,镍、铜、锌和铅的所有废气和非废气源的总排放量将分别增加 174%、176%、163% 和 184%。因此,降低交通排放源中的金属浓度并采取更好的监管措施来改善城市金属污染状况至关重要。
更新日期:2024-09-11
中文翻译:
印度交通来源重金属的来源分配和排放预测:来自元素和 Pb 同位素组成的见解
该研究使用元素浓度和 Pb 同位素比值调查了城市道路粉尘中金属的来源。元素浓度还用于确定目前的重金属排放量以及到 2045 年的预计排放量。用于源分配的贝叶斯混合模型强调了废气源和非废气源对富含金属的城市道路粉尘的显著贡献,各占约 40%。排放分析显示,印度预计的电动汽车 (EV) 渗透率可能不足以抑制汽车尾气的金属排放。非废气源中的高金属浓度带来了进一步的挑战,与废气源相比,非废气源中的高金属浓度是某些金属排放的主要因素。如果金属浓度保持不变,排放分析预测,从 2022 年到 2045 年,镍、铜、锌和铅的所有废气和非废气源的总排放量将分别增加 174%、176%、163% 和 184%。因此,降低交通排放源中的金属浓度并采取更好的监管措施来改善城市金属污染状况至关重要。