Health risks and air quality by PM2.5 in the leeward area of the Asian continent in the preceding year of the MARPOL Treaty enforcement

IF 2.9 4区 环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES
Xi Zhang, Masahide Aikawa
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Abstract

The International Maritime Organization (IMO) has formulated stringent ship emission regulations, and the global fuel sulfur limit of 0.50% became effective in 2020. Kitakyushu City is in the coastal suburbs of western Japan, and PM2.5 had already decreased prior to the global low-sulfur regulation, with concentrations in 2017, 2018, and 2019 of 12.2, 13.4, and 8.1 µg·m−3, respectively. The loading particles of the air masses passing through the Bohai Sea, Yellow Sea, and East China Sea in 2019 decreased to 3.4 µg·m−3, which was obviously higher than that of other air masses (0.5 µg·m−3), and the contribution of nss-SO42− could reach 56%, followed by OC (23%) and NH4+ (21%). Moreover, the characteristics of typical ship-emitted metals (V, Ni, As, Sb, W, and Cd) also changed greatly. Their sum concentrations in 2017, 2018, and 2019 were 10.6, 11.1, and 6.9 ng·m−3, respectively, which showed an annual variation similar to that of nss-SO42−. As for the particle exposure risk, the lowest chronic effect and carcinogenic risk were observed in 2019, with hazard indices (HI) for adults and children of 0.9 and 7.6, and carcinogenic risks (CRs) of 3.8 × 10−5 and 8.4 × 10−5, respectively. In this study, the health risks as well as air quality prior to the enforcement of the MARPOL Treaty in the leeward area of the Asian continent were totally and more precisely studied and evaluated based on the annual dataset; revealing the influence of trans-boundary transportation under individual Chinese regulations on the particle characteristic variations in Kitakyushu, Japan.

Abstract Image

防污公约》实施前一年亚洲大陆背风地区 PM2.5 带来的健康风险和空气质量
国际海事组织(IMO)制定了严格的船舶排放法规,全球燃料硫含量限制为 0.50%,并于 2020 年生效。北九州市位于日本西部沿海郊区,PM2.5 在全球低硫法规实施前已经有所下降,2017 年、2018 年和 2019 年的浓度分别为 12.2、13.4 和 8.1 µg-m-3。2019 年经过渤海、黄海和东海的气团的负荷颗粒物降至 3.4 µg-m-3,明显高于其他气团(0.5 µg-m-3),其中 nss-SO42- 的贡献率可达 56%,其次是 OC(23%)和 NH4+(21%)。此外,典型的船舶排放金属(V、Ni、As、Sb、W 和 Cd)的特征也发生了很大变化。它们在 2017 年、2018 年和 2019 年的浓度总和分别为 10.6、11.1 和 6.9 ng-m-3,呈现出与 nss-SO42- 相似的年度变化。在颗粒物暴露风险方面,2019 年的慢性效应和致癌风险最低,成人和儿童的危害指数(HI)分别为 0.9 和 7.6,致癌风险(CR)分别为 3.8 × 10-5 和 8.4 × 10-5。本研究基于年度数据集,对《防污公约》实施前亚洲大陆背风地区的健康风险和空气质量进行了全面、更精确的研究和评估,揭示了中国个别法规下的跨境运输对日本北九州颗粒物特征变化的影响。
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来源期刊
Air Quality Atmosphere and Health
Air Quality Atmosphere and Health ENVIRONMENTAL SCIENCES-
CiteScore
8.80
自引率
2.00%
发文量
146
审稿时长
>12 weeks
期刊介绍: Air Quality, Atmosphere, and Health is a multidisciplinary journal which, by its very name, illustrates the broad range of work it publishes and which focuses on atmospheric consequences of human activities and their implications for human and ecological health. It offers research papers, critical literature reviews and commentaries, as well as special issues devoted to topical subjects or themes. International in scope, the journal presents papers that inform and stimulate a global readership, as the topic addressed are global in their import. Consequently, we do not encourage submission of papers involving local data that relate to local problems. Unless they demonstrate wide applicability, these are better submitted to national or regional journals. Air Quality, Atmosphere & Health addresses such topics as acid precipitation; airborne particulate matter; air quality monitoring and management; exposure assessment; risk assessment; indoor air quality; atmospheric chemistry; atmospheric modeling and prediction; air pollution climatology; climate change and air quality; air pollution measurement; atmospheric impact assessment; forest-fire emissions; atmospheric science; greenhouse gases; health and ecological effects; clean air technology; regional and global change and satellite measurements. This journal benefits a diverse audience of researchers, public health officials and policy makers addressing problems that call for solutions based in evidence from atmospheric and exposure assessment scientists, epidemiologists, and risk assessors. Publication in the journal affords the opportunity to reach beyond defined disciplinary niches to this broader readership.
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