几十年来，室内尘土中多环芳香烃（PAHs）的存在和潜在健康风险一直被广泛研究，而对含氧PAH（OPAHs）的关注有限。本研究收集了来自中国广州市四个微环境的45个室内尘土，并关注了16种PAH和8种OPAH的共存以及它们对人类的潜在致癌风险。 ΣPAHs浓度以4-6环PAH为主，范围从1761-14,290 ng/g（平均6058 ng/g），在不同的微环境中没有显著差异（Tukey，p> 0.05）。OPAHs的浓度为250-5160 ng/g（平均1646 ng/g），并且蒽醌（AQ）被确定为主要的OPAHs，其在居住环境中的含量明显高于仪器房间。值得注意的是，在本研究中，AQ优于其他目标分析物。我们的研究结果表明，室内尘土中的PAHs和OPAHs来自室外环境，主要来自车辆尾气和生物质/煤燃烧。通过吸入、摄入和皮肤吸收，PAHs和OPAHs对当地成年人和儿童存在潜在的致癌风险，其中主要贡献来自苯并[a]芘和二苯并[a,h]蒽。 ©2023。作者，独家授权Springer-Verlag GmbH Germany，Springer Nature的一部分。

For decades, the presence and potential health risk of polycyclic aromatic hydrocarbons (PAHs) in indoor dust have been extensively investigated while with limited attention to oxygenated PAHs (OPAHs). In this study, we collected 45 indoor dust from four microenvironments in Guangzhou City, China, and then focused on the co-occurrence of 16 PAHs and 8 OPAHs and their potential carcinogenic risk to humans. The ΣPAHs concentrations, dominated by 4-6 ring PAHs, ranged from 1761 to 14,290 ng/g (mean of 6058 ng/g) without significant difference in the different microenvironments (Tukey, p > 0.05). The OPAHs were observed with concentrations from 250 to 5160 ng/g (mean of 1646 ng/g), and anthraquinone (AQ) was identified as the main OPAHs with significantly high levels in the residential environment than in instrumental rooms. Notably, AQ dominated over the other target analytes in dust in this study. Our results indicated that PAHs and OPAHs in indoor dust were from outdoor environments, which mainly originated from vehicular exhaust and biomass/coal combustion. A potential cancer risk of PAHs and OPAHs to local adults and children was observed via inhalation, ingestion, and dermal absorption, with the main contribution from benzo[a]pyrene and dibenz[a,h]anthracene.© 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.