PAHs in the atmospheric aerosols and seawater in the North-West Pacific ocean and sea of Japan

作     者：Neroda, Andrey S. Goncharova, Anna A. Mishukov, Vasily F. 

作者机构：RAS FEB VI Ilichev Pacific Oceanol Inst 43 Baltiyskaya St Vladivostok 690041 Russia 

出 版 物：《ATMOSPHERIC ENVIRONMENT》 (大气环境)

年 卷 期：2020年第222卷

页      面：117117-000页

核心收录：

学科分类：0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 0706[理学-大气科学] 

主　　题：Aerosols PAH Seawater Wildfires Pacific ocean 

摘      要：PAHs were analyzed in samples of atmospheric aerosols and suspended matter in seawater collected in the Sea of Japan, Sea of Okhotsk and the North-Western Pacific in June-July 2012. The concentrations of Sigma(15) PAHs in the suspended matter of seawater ranged between 1984.7 pg/L to 30260.3 pg/L. The concentration of Sigma(14) PAHs in marine aerosols ranged from 17.09 pg/m(3) on June 19-22, 2012 in the northern part of the Sea of Japan, the La Perouse Strait to 142.47 pg/m(3) on June 25-28, 2012 near middle Kuril Islands. The results of diagnostic ratios analysis indicate that the primary sources of PAH are pyrogenic. This paper discusses the main anthropogenic (coal-fired power plants and population) and natural sources (wildfires) of PAHs and their effect on the concentration of these compounds in the marine air and suspended matter of seawater. Long-range atmospheric transport of PAHs from the continent to the ocean is shown using HYSPLIT backward trajectories. Active fire products (MODIS and VIIRS) data were used to build a regression model. The model as a whole explains 58% and 75% of the Sigma 5-ring PAHs and BaP variations in seawater in June-July 2012, respectively. The analysis shows that anthropogenic sources were not a significant contribution factor for PAHs in the seawater at the Sea of Japan during this period.