Atmospheric Environment最新文献

Bioaccessibility and transformation of PM2.5 organics and microbiota in simulated lung fluids: Implications for fluid-specific respiratory risks 模拟肺液中PM2.5有机物和微生物群的生物可及性和转化：对液体特异性呼吸风险的影响

IF 3.7 2区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

Atmospheric Environment

Pub Date : 2026-04-15 Epub Date: 2026-02-10 DOI: 10.1016/j.atmosenv.2026.121864

Yongjian Deng, Ting Fang

Fine particulate matter (PM_2.5) contains organic pollutants and microorganisms that interact with pulmonary fluids upon inhalation, potentially leading to lung microbiota dysbiosis and respiratory diseases. However, how lung fluids affect the bioaccessibility and transformation of PM_2.5 remains unclear, impeding precision risk assessment. We extracted and incubated ambient PM_2.5 samples in simulated lung fluids (SLFs) modeling extracellular healthy lung fluid (modified Gamble's solution, MGS) versus intracellular acidic lung fluid (artificial lysosomal fluid, ALF). Organic compounds and microorganisms were analyzed using ultra-high-performance liquid chromatography-mass spectrometry (UHPLC-MS) and high-throughput sequencing, respectively. The results show fluid-dependent bioaccessibility and changes: seven most abundant organic compounds (e.g. malic acid) are exclusively bioaccessible in MGS, whereas four organics (e.g. 4-nitrophenol) are bioaccessible only in ALF. High-risk toxins like nicotine, skatole, and N,N-dimethylacetamide show high bioavailability in both fluids. While ALF extracts minimal microorganisms, MGS exhibits higher release for some pathogens including Corynebacterium, Staphylococcus, and Acinetobacter. After 96-h cultivation, MGS exhibits greater compositional shifts in both organic compounds (carboxylic acids, amine compounds, and pyridines) and microbiota (ten different genera including Acinetobacter and Pseudomonas) than ALF, owing to more pronounced microbial activities in neutral pH. In MGS, Acinetobacter and Pseudomonas were positively associated with carboxylic acids, amines, and aromatics, indicating putative microbe–organic interactions that require mechanistic confirmation. These fluid-specific patterns suggest that identical PM_2.5 exposure may yield different health impacts from pollutants and microorganisms depending on an individual's pulmonary microenvironment. This study underscores the importance of incorporating bioaccessibility into PM_2.5 risk assessments.

细颗粒物（PM2.5）含有有机污染物和微生物，吸入后与肺部液体相互作用，可能导致肺部微生物群失调和呼吸道疾病。然而，肺液如何影响PM2.5的生物可及性和转化尚不清楚，这阻碍了精确的风险评估。我们在模拟肺液（slf）中提取和培养环境PM2.5样本，模拟细胞外健康肺液（改良甘伯溶液，MGS）和细胞内酸性肺液（人工溶酶体液，ALF）。有机化合物和微生物分别采用超高效液相色谱-质谱（UHPLC-MS）和高通量测序进行分析。结果显示了流体依赖的生物可及性和变化：7种最丰富的有机化合物（如苹果酸）在MGS中完全生物可及，而4种有机物（如4-硝基酚）仅在ALF中生物可及。高危毒素如尼古丁、甲烟素和N，N-二甲基乙酰胺在两种液体中均表现出较高的生物利用度。虽然ALF提取的微生物很少，但MGS对一些病原体（包括棒状杆菌、葡萄球菌和不动杆菌）有较高的释放。经过96小时的培养，MGS在有机化合物（羧酸、胺类化合物和吡啶）和微生物群（包括不动杆菌和假单胞菌在内的10个不同属）的组成变化比ALF更大，因为在中性ph下微生物活性更明显。在MGS中，不动杆菌和假单胞菌与羧酸、胺和芳烃正相关，表明假定的微生物-有机相互作用需要机制确认。这些流体特异性模式表明，相同的PM2.5暴露可能会产生不同的污染物和微生物对健康的影响，这取决于个人的肺部微环境。这项研究强调了将生物可及性纳入PM2.5风险评估的重要性。

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引用次数: 0

High-resolution monitoring of oxidative potential in urban air: A FOX assay-based online approach 城市空气中氧化电位的高分辨率监测：基于FOX分析的在线方法

IF 3.7 2区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

Atmospheric Environment

Pub Date : 2026-04-15 Epub Date: 2026-02-05 DOI: 10.1016/j.atmosenv.2026.121849

J.-J. Sauvain , A. Toto , N. Concha-Lozano , M. Marro , G. Suarez

In this work, we described and characterized a novel online instrument for oxidative potential (OP) measurement using the ferrous orange xylenol (FOX) assay. This assay, based on the Fenton reaction, allows a good sensitivity for H₂O₂ with a LOD of 0.2 μg H₂O₂/m³ and an acceptable CV of 12%. Laboratory tests indicated that the instrument is responding to O₃ and tert-butyl hydroperoxide but not to NO₂. Its 5-min sampling and analysis cycle is short enough to catch the fast decay of the reactive and unstable oxidants potentially presents in the ambient aerosol. These analytical specifications allowed us to continuously quantify the total OP^FOX — gaseous + particulate — during more than 20 days at an urban monitoring station in Lausanne (Switzerland) for three different periods of the year. Random Forest Regression and Multiple Linear Regression were used and compared in the development of a time-independent predictive model for OP^FOX. Random Forest Regression performed better than the Multiple Linear regression, particularly at high OP^FOX values. These results strongly suggest that this online instrument responds to photochemically generated gaseous oxidants, particularly H₂O₂ and O₃. The developed models also incorporated aerosol and meteorological variables — including ultrafine particle size, temperature, and solar radiation that may exhibit collinearity with these gaseous oxidants. Comparing online with offline (filter) samples showed that filter-based OP^FOX measurements were substantially underestimated. Therefore, the online FOX measurement provides a more accurate estimate of reactive oxygen species and may complement existing indicators used in epidemiological studies of photochemical air pollution.

在这项工作中，我们描述并表征了一种新的在线氧化电位（OP）测量仪器，该仪器使用亚铁橙二甲酚（FOX）测定法。该方法基于Fenton反应，对H2O2具有良好的灵敏度，LOD为0.2 μg H2O2/m3， CV为12%。实验室测试表明，该仪器对O3和过氧化叔丁基有反应，但对NO2没有反应。它的5分钟采样和分析周期足够短，可以捕捉到环境气溶胶中可能存在的活性和不稳定氧化剂的快速衰变。这些分析规范使我们能够在一年中的三个不同时期，在洛桑（瑞士）的一个城市监测站，连续量化20多天的总OPFOX（气体+颗粒）。利用随机森林回归和多元线性回归建立了OPFOX的时间无关预测模型，并进行了比较。随机森林回归优于多元线性回归，特别是在高OPFOX值时。这些结果强烈表明，该在线仪器对光化学生成的气态氧化剂，特别是H2O2和O3有响应。开发的模型还纳入了气溶胶和气象变量，包括超细颗粒大小、温度和太阳辐射，这些变量可能与这些气体氧化剂共线性。在线与离线（过滤器）样本的比较表明，基于过滤器的OPFOX测量值被大大低估了。因此，在线FOX测量提供了更准确的活性氧估计，并可能补充光化学空气污染流行病学研究中使用的现有指标。

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引用次数: 0

Chlorine–mediated enhancement of coastal ozone pollution under long–range transport in eastern China 氯介导的中国东部沿海臭氧污染的远程传输增强

IF 3.7 2区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

Atmospheric Environment

Pub Date : 2026-04-15 Epub Date: 2026-02-10 DOI: 10.1016/j.atmosenv.2026.121861

Zhihao Yang , Jie Li , Yuchen Liu, Jing Chen, Xiao Fu

Ozone (O₃) pollution in eastern China has been worsening in recent years despite the implementation of effective control measures. Reactive chlorine plays a key role in regulating O₃ formation by modulating atmospheric oxidative capacity. However, its impact on O₃ formation in the context of land-sea interaction and long-range transport has not been fully explored in eastern China. In this study, we combined a chemical transport model (CTM) with meteorological and O₃ observations, as well as backward trajectory analyses, to identify a typical long-range O₃ transport episode in eastern China in autumn 2018. Three representative cities—Shanghai, Fuzhou, and Shenzhen—experienced significant regional transport impacts. During the typical transport episode, chlorine emissions aggravated O₃ pollution, with peak increases exceeding 10, 12, and 8 μg m⁻³ in Shanghai, Fuzhou, and Shenzhen, respectively. Marine-derived chlorine dominated this contribution, accounting for 55.8%, 63.3%, 69.5% of the total chlorine impact in the above three cities. These findings highlight the critical role of chlorine emissions, particularly from marine sources, in enhancing coastal O₃ levels.

近年来，尽管实施了有效的控制措施，但中国东部地区的臭氧污染仍在恶化。活性氯通过调节大气氧化能力在O3的形成中起关键作用。然而，在陆海相互作用和远距离输运的背景下，其对中国东部O3形成的影响尚未得到充分探讨。在这项研究中，我们将化学输送模型（CTM）与气象和O3观测以及反向轨迹分析相结合，以确定2018年秋季中国东部典型的远距离O3输送事件。上海、福州和深圳三个代表性城市对区域交通影响显著。在典型运输时段，氯排放加重了O3污染，上海、福州和深圳的峰值增幅分别超过10、12和8 μg m−3。其中，海源氯的贡献最大，分别占总氯影响的55.8%、63.3%、69.5%。这些发现突出了氯排放，特别是来自海洋的氯排放在提高沿海臭氧水平方面的关键作用。

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引用次数: 0

Pollution characteristics of PM2.5 and PM1.0 at urban and background sites in South Korea: Focusing on health risks of PAHs and heavy metals 韩国城市和背景站点PM2.5和PM1.0的污染特征：关注多环芳烃和重金属的健康风险

IF 3.7 2区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

Atmospheric Environment

Pub Date : 2026-04-15 Epub Date: 2026-02-06 DOI: 10.1016/j.atmosenv.2026.121857

Sang-Jin Lee , Ho-Young Lee , In-Gyu Cho , Seong-Joon Kim , Ji Yi Lee , Hye-Jung Shin , Young Sung Ghim , Yong Pyo Kim , Sung-Deuk Choi

Although smaller particles are considered more harmful to human health, the need for independent management of PM_1.0 remains debated. In this study, PM_2.5 and PM_1.0 samples were collected for 15–20 days per season during 2020–2021 at an urban site in Seoul (SE) and a background site on Baengnyeong Island (BN), South Korea, to monitor PAHs and metals. Both sites showed higher Σ₁₃ PAH concentrations in winter (SE: 12.6 for PM_2.5 and 9.59 for PM_1.0; BN: 9.37 and 5.58 ng/m³), while Σ₁₀ metal concentrations increased in winter (SE: 769 and 373; BN: 660 and 340 ng/m³) and fall (SE: 503 and 248, BN: 403 and 223 ng/m³). Backward trajectory analysis identified northeastern and northern China and North Korea as major source regions. BN frequently experienced C_HMs episodes associated with air masses transported from North Korea. SHAP results revealed that seasonal variables were primary drivers of C_PAHs, whereas particle size was the dominant factor influencing C_HMs. Cancer risk associated with PAHs was higher at SE (6.7 × 10⁻⁸ and 4.7 × 10⁻⁸), whereas that from heavy metals was higher at BN (1.0 × 10⁻⁵ and 5.6 × 10⁻⁶). Risk normalized by PM mass was significantly higher for PM_2.5, indicating a more efficient enrichment of PAHs and heavy metals in the PM_1.0-2.5 fraction. PAH sources were similar across sites and particle sizes, while metal sources varied with particle size and meteorological conditions. Overall, enhancing the current PM_2.5-based management framework by incorporating PM_1.0 characteristics is recommended to better protect human health risks.

尽管较小的颗粒物被认为对人类健康的危害更大，但对PM1.0进行独立管理的必要性仍存在争议。在本研究中，在2020-2021年 期间，每个季节在首尔（SE）的一个城市站点和韩国Baengnyeong岛（BN）的一个背景站点收集PM2.5和PM1.0样本15-20天，以监测多环芳烃和金属。两个站点冬季Σ13多环芳烃浓度较高（PM2.5 SE: 12.6, PM1.0 SE: 9.59; BN: 9.37, 5.58 ng/m3），冬季Σ10金属浓度升高（SE: 769, 373; BN: 660, 340 ng/m3），下降（SE: 503, 248, BN: 403, 223 ng/m3）。反向轨迹分析表明，中国东北和北方以及朝鲜是主要的来源地区。BN经常经历与来自朝鲜的气团有关的CHMs事件。SHAP结果显示，季节变量是CPAHs的主要驱动因素，而粒径是影响CHMs的主要因素。与多环芳烃相关的癌症风险在SE较高（6.7 × 10−8和4.7 × 10−8），而来自重金属的风险在BN较高（1.0 × 10−5和5.6 × 10−6）。PM质量归一化后的PM2.5风险显著高于PM1.0-2.5，表明PM1.0-2.5组分中PAHs和重金属的富集效率更高。不同地点和不同粒径的多环芳烃源相似，而金属源则随粒径和气象条件的不同而不同。总体而言，建议通过纳入PM1.0特征来加强目前基于pm2.5的管理框架，以更好地保护人类健康风险。

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引用次数: 0

Data fusion for fine-scale ozone mapping in the New York City metropolitan area using low-cost sensors and model information 利用低成本传感器和模型信息进行纽约市市区精细臭氧制图的数据融合

IF 3.7 2区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

Atmospheric Environment

Pub Date : 2026-04-15 Epub Date: 2026-01-20 DOI: 10.1016/j.atmosenv.2026.121805

Ellie Hojeily , Cheng-Hsuan Lu , Stefano Alessandrini , Ju-Hye Kim , Rajesh Kumar , Shih-Wei Wei , Liam Sheji , Md. Aynul Bari , Scott D. Miller

Surface ozone (O₃) exhibits spatiotemporal variability in the New York City metropolitan area (NYCMA) under the influence of complex mesoscale flows which transport O₃ and its precursors. Fine-scale ambient air quality monitoring is critical for estimating air pollution exposure and assessing whether mitigation strategies are sufficient to attain the National Ambient Air Quality Standards. To improve air quality monitoring in the NYCMA, 38 New York State Mesonet (NYSM) sites were outfitted with well-calibrated low-cost O₃ sensors. This study applies the Satellite Enhanced Data Interpolation (SEDI) method to bias-correct 1-year of gridded output from the Weather Research and Forecasting with Chemistry (WRF-Chem) through fusion with surface O₃ observations from the NYSM low-cost sensor sites and instruments from the U.S. EPA's AirNow monitoring network. Prior to bias correction, WRF-Chem overestimated O₃ concentrations at 11 NYCMA AirNow sites. Constraining WRF-Chem using the NYSM low-cost sensor sites alone reduced mean bias error by around 6 ppb at the AirNow sites. At NYSM sites, the gridded O₃ dataset constrained by observations from NYSM and AirNow together resulted in a better-performing dataset compared to the dataset constrained using observations from AirNow alone. These results highlight the value added by low-cost sensors in filling observational gaps in existing regulatory monitoring networks. Additionally, the SEDI algorithm is a computationally inexpensive post-processing technique that effectively reduces error and bias and is enhanced by the increase in spatial resolution of air quality monitoring provided by integrating the NYSM low-cost sensor sites with the AirNow network.

在输送O3及其前体的复杂中尺度气流的影响下，纽约大都会区（NYCMA）地表臭氧（O3）呈现时空变异。精细尺度的环境空气质量监测对于估计空气污染暴露和评估缓解战略是否足以达到国家环境空气质量标准至关重要。为了改善纽约气象局的空气质量监测，38个纽约州Mesonet （NYSM）站点配备了校准良好的低成本臭氧传感器。本研究采用卫星增强数据插值（SEDI）方法，通过融合NYSM低成本传感器站点和美国环保署的AirNow监测网络的仪器，对化学天气研究与预报（WRF-Chem） 1年的网格化输出进行了偏差校正。在偏差校正之前，WRF-Chem高估了11个NYCMA AirNow站点的O3浓度。仅使用NYSM低成本传感器站点限制WRF-Chem，就可以在AirNow站点减少约6 ppb的平均偏差。在NYSM站点，与单独使用AirNow观测数据约束的数据集相比，由NYSM和AirNow观测数据约束的网格化O3数据集产生了更好的数据集。这些结果突出了低成本传感器在填补现有监管监测网络的观测空白方面所增加的价值。此外，SEDI算法是一种计算成本低廉的后处理技术，可以有效地减少误差和偏差，并且通过将NYSM低成本传感器站点与AirNow网络相结合，可以提高空气质量监测的空间分辨率。

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引用次数: 0

Equilibrium partition coefficients of semi-volatile organic compounds (SVOCs) between indoor surfaces and air assessed using two experimental methods 采用两种实验方法评估了室内表面与空气之间的半挥发性有机化合物（SVOCs）平衡分配系数

IF 3.7 2区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

Atmospheric Environment

Pub Date : 2026-04-15 Epub Date: 2026-02-04 DOI: 10.1016/j.atmosenv.2026.121859

Benoit Schmitt , Hervé Plaisance , Cédric Duprat , Mélanie Nicolas , Valérie Desauziers

Indoor exposure to semi-volatile organic compounds (SVOCs) is affected by their sorption onto indoor surfaces such as clothes, toys, building materials and furniture. They are transferred from these contaminated surfaces to the body via various routes such as skin contact, inhalation or hand-to-mouth transfer. Knowledge of their sink surface/air partition coefficients K_Surf are needed to apply indoor fate models and assess occupants’ exposure to SVOCs.

Partition coefficients of triphenyl phosphate (TPP), 2-ethylhexyl diphenyl phosphate (EHDPP) and 1,2-cyclohexane-dicarboxylic acid, dinonyl ester (DINCH) on cotton, glass and stainless steel (SS) surfaces were experimentally determined using two different methods. In the Micro-Chamber/Thermal Extractor (M-CTE), K_cotton values were close to 10⁴ m. For this method, improvements were proposed to investigate the sorption on surfaces having lower sorption capacities such as glass or SS. In the sandwich-like emission cell, K_glass and K_SS values ranged from 20 to 465 m, and from 99 to 1570 m, respectively. In coherence with the literature, sorption on cotton was higher than on SS and glass. Moreover, based on literature data, the SVOC vapor pressure (V_P) could be a good predictor of K_Surf for non-porous surfaces such as SS and glass. For porous surfaces (cotton), additional parameters related to the surface (porosity or composition) should be used with V_P. Strong sorption capacity of cotton reinforces the health risk posed by contaminated clothes. This study highlights the need for further research to understand the key parameters of SVOC sorption on textiles.

室内暴露于半挥发性有机化合物（SVOCs）受其吸附到室内表面（如衣服、玩具、建筑材料和家具）的影响。它们通过各种途径从这些被污染的表面传播到人体，如皮肤接触、吸入或手到口传播。需要了解它们的水槽表面/空气隔断系数KSurf，以应用室内命运模型并评估居住者对SVOCs的暴露。采用两种不同的方法测定了磷酸三苯酯（TPP）、磷酸二乙基己基二苯酯（EHDPP）和1,2-环己烷-二羧酸二甲酯（DINCH）在棉花、玻璃和不锈钢（SS）表面的分配系数。在微室/热萃取器（m - cte）中，k棉花值接近104 m。对于这种方法，提出了改进，以研究吸附能力较低的表面（如玻璃或SS）的吸附。在三明治状发射电池中，Kglass和KSS的值分别在20 ~ 465 m和99 ~ 1570 m之间。与文献一致，棉花的吸附性高于SS和玻璃。此外，根据文献数据，SVOC蒸汽压（VP）可以很好地预测非多孔表面（如SS和玻璃）的KSurf。对于多孔表面（棉花），与表面相关的附加参数（孔隙率或成分）应与VP一起使用。棉花的强吸附能力增加了被污染的衣服对健康造成的风险。该研究表明，需要进一步研究纺织品吸附SVOC的关键参数。

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引用次数: 0

Dependence of inorganic ions on thiol spontaneous oxidation in aerosol microdroplets 气溶胶微滴中无机离子对硫醇自发氧化的影响

IF 3.7 2区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

Atmospheric Environment

Pub Date : 2026-04-15 Epub Date: 2026-02-05 DOI: 10.1016/j.atmosenv.2026.121850

Hong Zhang , Xiaoyu Fan , Yun Ju , Xiajing Wei , Yutao Wang , Jing He , Jie Jiang , Jing Zhao

Inorganic ions are ubiquitous in aerosol microdroplets, especially in sea salt aerosols (SSAs). However, the molecular mechanisms by which inorganic ions regulate redox reactions in microdroplets remain unclear. We nebulized water microdroplets containing various inorganic salts to simulate SSAs and investigated the effects of different ions on the spontaneous oxidation of L-cysteine in microdroplets. By modulating the concentration, charge, and ionic radius of inorganic ions, we found that cations at certain concentrations enhanced the spontaneous oxidation of L-cysteine by influencing the electric double layer of microdroplets. The spontaneous oxidation of thiols was progressively enhanced with the increasing concentration of transition metals, which acted as electron acceptors. Anions with larger ionic radii formed free radicals and also promoted oxidation. Our results confirmed the critical role of inorganic ions in the spontaneous oxidation of thiols in aerosol microdroplets. Furthermore, the research provided new insights into the atmospheric transformation of sulfur-containing pollutants, which is of great importance for the global sulfur cycle and climate change.

无机离子在气溶胶微滴中普遍存在，特别是在海盐气溶胶（SSAs）中。然而，无机离子调控微滴中氧化还原反应的分子机制尚不清楚。我们雾化了含有不同无机盐的水微滴来模拟ssa，并研究了不同离子对微滴中l -半胱氨酸自发氧化的影响。通过调节无机离子的浓度、电荷和离子半径，我们发现一定浓度的阳离子通过影响微滴的双电层来增强l -半胱氨酸的自发氧化。随着电子受体过渡金属浓度的增加，硫醇的自发氧化逐渐增强。离子半径较大的阴离子形成自由基，也促进氧化。我们的结果证实了无机离子在气溶胶微滴中硫醇的自发氧化中的关键作用。此外，该研究还为含硫污染物的大气转化提供了新的认识，这对全球硫循环和气候变化具有重要意义。

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引用次数: 0

Assessment of health risks from polycyclic aromatic hydrocarbons and their halogenated derivatives in residential indoor environments 住宅室内环境中多环芳烃及其卤化衍生物的健康风险评估

IF 3.7 2区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

Atmospheric Environment

Pub Date : 2026-04-15 Epub Date: 2026-02-03 DOI: 10.1016/j.atmosenv.2026.121851

Tetsuya Takikawa , Qi Wang , Kazushi Noro , Yukari Takahashi , Yuichi Miyake , Takashi Amagai

Polycyclic aromatic hydrocarbons (PAHs) and their halogenated derivatives (XPAHs) are emerging persistent organic pollutants with potential carcinogenicity. Their occurrence in indoor environments remains largely unexplored. We measured 26 PAHs and 40 XPAHs in indoor air and house dust from 45 residences in Toyama, Shizuoka, and Kanagawa, Japan (2022–2024). At least one XPAH was detected at all sites, with concentrations 10³–10⁴ times lower than PAHs but with similar size distributions and compositions, suggesting analogous atmospheric behavior. Homes using unventilated wood stoves exhibited indoor/outdoor ratios >10 for high-molecular-weight PAHs, notably benzo[a]pyrene, indicating strong indoor sources. Cancer risk assessment showed inhalation as the dominant exposure pathway, with 95th percentile incremental lifetime cancer risk exceeding 1 × 10⁻⁶ in the investigated residences in Toyama, Shizuoka, and Kanagawa, Japan, surpassing safety thresholds. These results demonstrate that indoor exposure to PAHs and XPAHs may pose non-negligible health risks and underscore the need for mitigation strategies, such as PM_2.5 reduction, to protect public health.

多环芳烃（PAHs）及其卤代衍生物（XPAHs）是新兴的具有潜在致癌性的持久性有机污染物。它们在室内环境中的发生情况在很大程度上仍未被探索。我们在日本富山、静冈县和神奈川县（2022-2024）的45户住宅中测量了室内空气和室内灰尘中的26种多环芳烃和40种XPAHs。所有站点均检测到至少一种XPAH，其浓度比PAHs低103 ~ 104倍，但具有相似的大小分布和组成，表明类似的大气行为。使用不通风柴炉的家庭显示出高分子量多环芳烃（PAHs）的室内/室外比值>；10，特别是苯并[a]芘，表明室内来源很强。癌症风险评估显示，吸入是主要的暴露途径，在日本富山、静冈和神奈川的调查住宅中，第95百分位终生癌症风险增量超过1 × 10−6，超过安全阈值。这些结果表明，室内暴露于多环芳烃和多环芳烃可能造成不可忽视的健康风险，并强调需要采取减缓战略，如减少PM2.5，以保护公众健康。

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引用次数: 0

Particulate matter pollution and source attribution in eastern Indo-Gangetic Plains industrial corridor: Toward an airshed-based management approach 印度-恒河平原东部工业走廊颗粒物污染及其来源：基于风挡的治理方法

IF 3.7 2区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

Atmospheric Environment

Pub Date : 2026-04-15 Epub Date: 2026-01-30 DOI: 10.1016/j.atmosenv.2026.121825

Karigowda , Kashish Jain , Mohd Imran , Mehbub Un-Nabi , Aisha Baig , Sayak Patra , Ramya Sunder Raman , Gazala Habib

This study investigates particulate matter pollution pathways in the industrial corridor of Durgapur and Asansol-Raniganj in the state of West Bengal in eastern Indo-Gangetic Plain (IGP), a region lacking long-term monitoring and requiring airshed-based management strategies due to prominent transboundary influences. We measured time integrated PM_2.5 and PM₁₀ at eight land-use specific sites, over a 15-month period from Oct 2022 to Dec 2023 - one of the first such efforts in this region. The annual PM_2.5 concentrations ranged from 86 ± 48 to 171 ± 105 μg m⁻³, and PM₁₀ from 144 ± 64 to 310 ± 189 μg m⁻³, with lowest concentration observed in SNT-BG and highest in RG-IND. The concentration peaked in winter, 193 ± 61 μg m⁻³ and 317 ± 73 μg m⁻³ for PM_2.5 and PM_10, respectively; driven by stagnant meteorology and reduced boundary layer height (∼396m). In contrast, the lowest concentrations were observed during the monsoon, 55 ± 29 μg m⁻³ and 100 ± 59 μg m⁻³ for PM_2.5 and PM_10, respectively, coinciding with intense rainfall (∼938 mm) and enhanced wet scavenging. Multiple linear regression revealed temperature and relative humidity as major inverse predictors of PM_2.5. Concentration Weighted Trajectories (CWT) analyses identified the northwestern IGP, particularly Punjab and Uttar Pradesh, as dominant source regions during post-monsoon and winter. Conditional Bivariate Potential Function (CBPF) analysis indicated high local contributions from industrial clusters and traffic corridors. The health burden estimates 874 premature deaths per million population annually, more than 90% of which is attributed to cardio-pulmonary health end points. The high industrial influence and dominant transboundary contributions strongly support the adoption of an airshed-level management framework that integrates local emission controls and regional collaboration to sustainably improve air quality and health outcomes in eastern India's industrial cities.

本研究调查了印度恒河平原（IGP）东部西孟加拉邦杜尔加普尔和阿桑索尔-拉尼甘吉工业走廊的颗粒物污染途径，该地区缺乏长期监测，由于跨境影响突出，需要基于气窗的管理策略。在2022年10月至2023年12月的15个月期间，我们测量了8个特定土地使用地点的PM2.5和PM10的时间整合，这是该地区首次开展此类工作之一。一年一度的PM2.5浓度范围从86 ± 48到171 ±105  μg m−3,并从144年 PM10± 64 - 310 ±189  μg m−3,与最低浓度观察在RG-IND SNT-BG和最高。PM2.5和PM10浓度在冬季达到峰值，分别为193 ± 61 μg m−3和317 ± 73 μg m−3；由停滞气象和边界层高度降低（~ 396米）驱动。相比之下,最低浓度观察季风期间,55 ± 29 μg −3和100 ± 59 μg m−3对PM2.5和PM10,分别与强烈的降雨(∼938 毫米)和增强湿清除。多元线性回归结果显示，温度和相对湿度是PM2.5的主要负向预测因子。浓度加权轨迹（CWT）分析确定西北IGP，特别是旁遮普邦和北方邦，是季风后和冬季的主要源区。条件二元势函数（CBPF）分析表明，产业集群和交通走廊对气候变化的贡献较大。据卫生负担估计，每年每百万人中有874人过早死亡，其中90%以上归因于心肺健康终点。高度的工业影响力和占主导地位的跨界捐款有力地支持通过一个空气棚级管理框架，将地方排放控制与区域合作结合起来，以可持续地改善印度东部工业城市的空气质量和健康成果。

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引用次数: 0

Volatile organic compounds, SO2 and NO2 capture by means of an indoor active living wall 利用室内活性活墙捕获挥发性有机化合物、SO2和NO2

IF 3.7 2区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

Atmospheric Environment

Pub Date : 2026-04-15 Epub Date: 2026-02-04 DOI: 10.1016/j.atmosenv.2026.121856

Antonio José Fernández-Espinosa , José Manuel Montiel-de La Cruz , Rafael Fernández-Cañero , Luis Pérez-Urrestarazu , Sabina Rossini-Oliva

The ability of an active living wall (ALW) to capture indoor air pollutants was studied. Five different species (Spathiphyllum wallisii, Tradescantia zebrina, Philodendron scandens, Ficus pumila and Chlorophytum comosum) were assessed. The experiments were performed inside a closed glass chamber for each species separately. Gas pollutants (NO₂ and SO₂) and volatile organic compounds (formaldehyde, acetone, n-hexane and n-heptane) were introduced into the chamber monitoring concentration changes. High values of the Pollutant Reduction (PR%) indicator were recorded after releasing pollutants in the chamber, especially for CH₂O and SO₂. After 24 h, PR% in the chamber ranged 96-98% for all the plant species studied. The ALW was more efficient in removing CH₂O and NO₂ than other air contaminants. In addition, differences in Differential Reduction Efficiency (DRE%) indicator were observed among plant species depending on the pollutant considered. After 15 min from the injection of TVOCs, a reduction of 24-40% was achieved with all plant species but S. wallisii showed greater DRE for NO₂, with 60% reduction in the first hour of exposure. The presented data demonstrates the effectiveness of active living wall systems for improving indoor air quality.

研究了活性活墙（ALW）对室内空气污染物的捕获能力。对5种不同的植物进行了评价，分别是：华氏Spathiphyllum wallisii、斑马草Tradescantia zebrina、scandens Philodendron、无花果（Ficus pumila）和吊兰（吊兰comosum）。实验分别在一个封闭的玻璃室内进行。将气体污染物（NO2和SO2）和挥发性有机物（甲醛、丙酮、正己烷和正庚烷）引入室内监测浓度变化。在室内释放污染物后，污染物减量（PR%）指标值较高，特别是CH2O和SO2。24 h后，所研究的所有植物的PR%在96-98%之间。ALW对CH2O和NO2的去除效率高于其他空气污染物。此外，不同植物种类的差异还原效率（DRE%）指标也存在差异。注射TVOCs 15 min后，所有植物对NO2的DRE均降低了24-40%，但S. wallisii对NO2的DRE更高，在暴露的第一个小时内降低了60%。所提出的数据证明了主动生活墙系统对改善室内空气质量的有效性。

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引用次数: 0