Spatial origin analysis on atmospheric bulk deposition of polycyclic aromatic hydrocarbons in Shanghai

Ying Liu; Xiaomin Zhang; Jianguo Tan; Peter Grathwohl; Rainer Lohmann

doi:10.1016/j.envpol.2022.120162

Spatial origin analysis on atmospheric bulk deposition of polycyclic aromatic hydrocarbons in Shanghai

Environ Pollut. 2022 Nov 15:313:120162. doi: 10.1016/j.envpol.2022.120162. Epub 2022 Sep 13.

Authors

Ying Liu¹, Xiaomin Zhang², Jianguo Tan³, Peter Grathwohl⁴, Rainer Lohmann⁵

Affiliations

¹ State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; Key Laboratory of Cities' Mitigation and Adaptation to Climate Change, Shanghai, China Meteorological Administration (CMA), Tongji University, Shanghai 200092, China; Key Laboratory of Yangtze River Water Environment, Ministry of Education, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China. Electronic address: liu_ying@tongji.edu.cn.
² State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; Key Laboratory of Yangtze River Water Environment, Ministry of Education, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China.
³ Key Laboratory of Cities' Mitigation and Adaptation to Climate Change, Shanghai, China Meteorological Administration (CMA), Tongji University, Shanghai 200092, China; Shanghai Meteorological IT Support Center, Shanghai Meteorological Service, Shanghai 200030, China.
⁴ Department of Geosciences, University of Tübingen, Schnarrenbergstraße 94-96, 72076 Tübingen, Germany.
⁵ Graduate School of Oceanography, University of Rhode Island, Narragansett, RI 02882-1197, United States.

PMID: 36113643
DOI: 10.1016/j.envpol.2022.120162

Abstract

Atmospheric deposition of polycyclic aromatic hydrocarbons (PAHs) onto soil threatens terrestrial ecosystem. To locate potential source areas geographically, a total of 139 atmospheric bulk deposition samples were collected during 2012-2019 at eight sites in Shanghai and its surrounding areas. A multisite joint location method was developed for the first time to locate potential source areas of atmospheric PAHs based on an enhanced three dimensional concentration weighted trajectory model. The method considered spatial and temporal variations of atmospheric boundary layer height and homogenized all results over the eight sites via geometric mean. Regional transport was an important contributor of PAH atmospheric deposition while massive local emissions may disturb the identification of potential source areas. Northwesterly winds were associated with elevated deposition fluxes. Potential source areas were identified by the multisite joint location method and included Hebei, Tianjin, Shandong and Jiangsu to the north, and Anhui to the west of Shanghai. PM and SO₂ data from the national ground monitoring stations confirmed the identified source areas of deposited PAHs in Shanghai.

Keywords: Planetary boundary layer height; Spatial origin analysis; Trajectory sector analysis.

MeSH terms

Air Pollutants* / analysis
China
Ecosystem
Environmental Monitoring / methods
Polycyclic Aromatic Hydrocarbons* / analysis
Soil

Substances

Air Pollutants
Polycyclic Aromatic Hydrocarbons
Soil