Frontiers in Public Health
·
2024
·
IF 3
Danchen Wu,Zhijing Ma,Haitao Diao,Wanru Wang,Liu Chen,Dalin Zhou,Jing Yang,Quan Zhen
Polycyclic aromatic hydrocarbons (PAHs) were measured in 342 daily PM10 samples collected in four seasons at a site in Bengbu, China. This study was a qualitative and quantitative investigation of the emission sources of atmospheric PAHs in Bengbu and the spatial distribution of regional PAH sources in PM10 samples. The annual concentrations of the 16 EPA priority PAHs ranged from 1.45 to 62.16 ng/m3, with an annual mean of 7.63 ± 7.38 ng/m3. The seasonal trends during the year were: winter (6.13–62.16 ng/m3, median = 14.99 ng/m3) > autumn (2.01–18.78 ng/m3, median = 4.90 ng/m3) > spring (1.45–19.34 ng/m3, median = 3.32 ng/m3) > summer (1.57–4.27 ng/m3, median = 2.12 ng/m3). The PAHs over the year were dominated by medium-molecular-weight PAHs (39.81%), followed by high-molecular-weight PAHs (35.77%), and low-molecular-weight PAHs (24.42%). The diagnostic ratio method and positive matrix factorization revealed that the PAH sources in Bengbu in spring and summer were industrial emissions, coal and biomass combustion, and traffic emissions; while the sources in autumn and winter were coal and biomass combustion and traffic emissions. According to a backward trajectory clustering analysis and potential source contribution function analysis, Bengbu City was mainly affected by pollution from the northern and northwestern regions in spring, autumn, and winter, while it was more affected by the coastal monsoon in summer. The PAH pollution in Bengbu was most severe in spring, autumn, and winter, and the health risk to the population was also most severe at that time. The health risk to adult males (3.35 × 10−4) was greater than the risk to adult females (3.14 × 10−4), and the health risk to adults was greater than the risk to children (2.52 × 10−4).
研究领域:
环境科学
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公共卫生
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DOI
PubMed
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2023
·
IF 9.8
Li-Li Yao,Jun-Li Wang,Rong-Fa Xu,Ming Zhu,Yan Ma,Bin Tang,Qi-Yuan Lu,Feng-Shan Cai,Xiao Yan,Jing Zheng,Yun-Jiang Yu
Liquid crystal monomers (LCMs) are potentially persistent, bioaccumulating, and toxic substances. However, limited data are available on the occurrence of LCMs in indoor and outdoor air particle matter (PM 10 ) in residential areas. Herein, residential areas near an e-waste dismantling center (Guiyu Town, Shantou City), as well as areas away from the e-waste site (Jiedong District, Jieyang City) were selected as the sampling areas. PM 10 was collected from the indoor environments of Guiyu (IGY) and Jieyang (IJY), as well as those from the outdoor environments (OGY and OJY) using the high-volume air samplers (TH-10000C). The levels of 57 LCMs in PM 10 were analyzed, and the highest concentrations of LCMs were found in IGY (0.970–1080 pg/m 3 ), followed by IJY (2.853–455 pg/m 3 ), OGY (0.544–116 pg/m 3 ) and OJY (0.258–35.8 pg/m 3 ). No significant difference was observed for LCM levels in indoor PM 10 between the two areas ( p > 0.05), which were significantly higher than those in outdoors ( p < 0.05), indicating that the release of electronic products in general indoor environments is a source of LCMs that cannot be ignored. The compositions of LCMs in outdoors were not consistent with those of indoors. The correlation analysis of individual LCMs suggested potential different sources to the LCMs in indoor and outdoor environments. The median daily intake values of Σ 46 LCMs via inhalation were estimated as 0.440, 1.46 × 10 −2 , 0.170 and 1.19 × 10 −2 ng/kg BW/day for adults, and as 2.27, 2.60 × 10 −2 , 0.880 and 2.10 × 10 −2 ng/kg BW/day for toddlers, respectively, indicating much higher exposure doses of LCMs indoors compared with the outdoors, and much higher doses for toddlers compared with adults ( p < 0.05). These results reveal the potentially adverse effects of LCMs on vulnerable populations, such as toddlers, in indoor environments.
研究领域:
环境科学
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公共卫生
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DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
·
2021
·
IF 2.826
Xuan Luo,Xiang-Dong Qing,Xu-Chang Miao,Sen Xiang,Hong-Jun Chen,Xiao-Hua Zhang,Min He
In this study, PM10 samples at four locations of Loudi, China were collected from January 2017 to March 2017 and December 2017 to February 2018 at first. Then, a new analytical strategy of second-order calibration based on the alternating trilinear decomposition (ATLD) coupled with gas chromatography-mass spectrometry (GC-MS) was firstly developed for quantitative analysis of seven polycyclic aromatic hydrocarbons (PAHs) in these samples. This strategy is more sensitive and efficient than traditional chromatography not only, but also it can resolve the problems of baseline drift and peaks overlapping in chromatographic analysis. Without the need for intricate pretreatment process and any derivation reactions, useful qualitative and quantitative information of seven PAHs was quickly extracted from the GC-MS-Sample data array by replacing chemical or physical separation with mathematical separation. In validation samples, the average recoveries of seven PAHs ranged from (96.7 ± 4.8) % to (107.9 ± 4.2) %, and the root-mean-square errors of prediction (RMSEPs) were within the range of 0.03–0.35 μg mL−1. The highest concentrations of individual PAHs in these samples were for phenanthrene (1.34 μg mL−1 in monitoring station), acenaphthylene (0.79 μg mL−1 in municipal government) and chrysene (0.53 μg mL−1 in monitoring station). Identified by component analysis, coal combustion and vehicle exhaust were the most possible sources of Loudi, China. These results demonstrated that the proposed method is characterised as a more precise, simple and promising analytical strategy to identify and quantify PAHs in actual aerosol.
研究领域:
环境科学
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分析化学
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DOI
高影响因子
Chemosensors
·
2024
·Vol. 12
·期 10
·220
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IF 3.7
Ting Hu,Yitao Xia,You Wang,Li Lin,Rong An,Ling Xu,Xiangdong Qing
Polycyclic aromatic hydrocarbons (PAHs) are a group of organic compounds that are both toxic and hazardous to human health and ecological systems. In recent work, a novel analytical strategy based on the chemometric-assisted HPLC-DAD method was proposed for the quantification and source apportionment of eight PAHs in PM10 samples. Compared to traditional chromatographic methods, this approach does not require the purification of complex PM10 samples. Instead, it utilizes a mathematical separation method to extract analytes’ profiles from overlapping chromatographic peaks, enabling precise quantification of PAHs in PM10. Firstly, 40 PM10 samples collected in Loudi city during two sampling periods were used for analysis. Subsequently, the second-order calibration method based on alternating trilinear decomposition (ATLD) was employed to handle the three-way HPLC-DAD data. Finally, the pollution sources of PAHs were analyzed by the feature component analysis method according to the obtained relative concentration matrix. For the validation model, the average recoveries of eight PAHs were between (88.8 ± 7.6)% and (105.6 ± 7.5)%, and the root-mean-square errors of prediction ranged from 0.03 μg mL−1to 0.47 μg mL−1. The obtained limits of quantification for eight PAHs were in the range of 0.0050 μg mL−1to 0.079 μg mL−1. For actual PM10 samples, results of the feature component analysis indicated that the main source of PAHs in PM10 may be traffic emissions and coal combustion. In summary, the proposed method provided a new and rapid analysis method for the accurate determination and source apportionment of PAHs in atmospheric aerosols.
研究领域:
环境科学
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分析化学
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公共卫生
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DOI
高影响因子
Polymers
·
2018
·Vol. 10
·期 12
·1386
·
IF 2.935
Yan Hong,Chunyu Liu,Xuechun Cao,Yu Chen,Chen Chen,Yan Chen,Zhijuan Pan
Metal-organic frameworks (MOFs) have been regarded as an ideal material for the development of functional textiles with filtration function. Such functional textiles with filtration function can be further used to develop personal protective equipment, such as protective masks. This paper focuses on the comparisons of different processes when applying MOFs to conventional textiles. Two different processes existing in the literature, namely the electrospinning method and hot-pressing method, are discussed in this paper. Materials loaded with MOFs developed with these two processes are evaluated and compared, regarding the adsorption of dyes in water and the removal of pollutants. Experiment results indicate that the hot-pressing method is more advantageous when applying MOF to textiles, in terms of adsorption and removal efficiency.Keywords:MOFs;electrospinning;hot-pressing;PM2.5;PM10;PM1.0
研究领域:
材料科学
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环境科学
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纺织工程
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DOI
PubMed
高影响因子
RENEWABLE ENERGY
·
2025
·
IF 9.1
Haiqing Sui,Geng Li,Jianfeng Chen,Guihao Wu,Hao Jiang,Wei Cheng,Hanping Chen
Combustion is one of the main sources of particulate matter (PM) emission during the biomass utilization, while the effects of three components, namely cellulose (CL), hemicellulose (HC), and lignin (LG), are still unknown. In this work, the model compounds were used to simulate the three components of cornstalk (CS), and their interactions on the PM emission behavior during the individual or co-combustion were investigated. Meanwhile, three different potassium-containing compounds were introduced to simulate the reactions between three components and alkali metals. The results showed all particle size distribution curves from the combustion of three components exhibited a unimodal distribution, while CS presented a bimodal distribution. The total PM 10 yields from the combustion of CL, HC, and LG are 0.32, 0.65, and 5.27 mg/g_fuel, much lower than that from cornstalk combustion (10.04 mg/g). The interaction between CL and HC could facilitate the formation of PM 0.1 and increase its yield by 4.93%. In contrast, the interaction between HC and LG was conducive to reducing PM 1 by 13.2%. However, the interaction between CL and LG has little impact on PM emission. The types of potassium salts had a significant impact on PM formation, and K 2 SO 4 , CH 3 COOK, and KCl could inhibit the PM emission, achieving a 9.4%–13% reduction compared to the theoretical value.
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高影响因子
ACS Applied Polymer Materials
·
2024
·
IF 4.4
Guofeng Yang,Wenlei Liu,Bingchao Feng,Wen Song,Maliang Zhang,Kunmei Su,Haiyang Yang,Zhenhuan Li
Polyphenylene sulfide (PPS) nonwoven filters are extensively utilized in industrial filtration processes because of their exceptional resistance to solvents and cost-effectiveness. However, the high temperature exhaust gases with strong oxidation can irreversibly corrode PPS nonwovens, and thus reduce their service life. Here, an oxidation-modified PPS (OPPS) nonwoven is reported that assembles excellent oxidation and high temperature resistance to achieve separation and filtration under extreme conditions. This OPPS nonwoven is resistant to oxidizing acid solutions and high temperatures up to 350 °C. In addition, the OPPS nonwoven does not melt when burned in a flame. Practical application tests demonstrated that the PM10–2.5 filtration efficiency of OPPS nonwoven reaches 90.4%, which is 20% higher than that of PPS nonwoven. Impressively, the OPPS nonwoven enables a PM10–2.5 filtration efficiency of 92.5% and 94.6% even after aging by 60% HNO3 solution and 350 °C, respectively. The cost-effectiveness and high performance of OPPS nonwoven present substantial advantages for flame retardant, thermal insulation, and dust filtration applications.
研究领域:
材料科学
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环境工程
·
化学工程
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Kun Zhang,Qian Huo,Ying-Ying Zhou,Hong-Hong Wang,Gao-Peng Li,Yao-Wu Wang,Yao-Yu Wang
The health-threatening air pollution, especially from particulate matter (PM), has triggered increasing demands for developing low-cost and long-service-life air-cleaning technologies. In the present contribution, a range of high-efficiency textiles/metal–organic framework (MOF) composites (MOFs@textiles) air filters with excellent washable reusability is presented. By processing MOFs onto textile substrates via an eco-friendly solvent-free method to enable the microporous feature and also strong PM adhesion, we develop flexible, highly effective air filters with >95.00% PM removal efficiency (e.g., MiL-53(Al)@Aramid, PM2.5: 95.30%, PM10: 96.11%) under harmful air quality conditions (average PM2.5 mass concentration > 280 μg m–3 and PM10 > 360 μg m–3). Therefore, these MOFs@textiles are promising composites for producing efficient and recyclable out-/indoor air purifiers.
研究领域:
环境科学
·
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Nano
·
2023
·
IF 17.1
Yite Li,Liqian Liu,Tian Meng,Lei Wang,Zhigang Xie
Sunlight-driven photocatalytic filters against pathogenic bioaerosols have attracted a lot of interest. However, developing an efficient interception system that shows enhanced visible-light harvesting, controllable charge dynamic, and boosted ROS generation remains a grand challenge. Here, we designed an ionic ZIF-8@iCOF nanocomposite as a sunlight-driven photocatalytic filter through elaborate structural engineering of the heterointerface between ZIF-8 and cationic iCOF layers. The photoactive experiments reveal significant improvements in the visible light absorption and sunlight-driven exciton-enhanced intersystem crossing to boost the generation of singlet oxygen (220%) and also obtain antibacterial efficiency of 99.99999% after 15 min irradiation. After combining with commercial polymer, resultant ZIF-8@iCOF/polyacrylonitrile (PAN) fibrous membranes exhibited high interception efficiency for both PM10 and PM2.5 (98%), being close to the commercial N95. This fibrous membrane also possesses good biocompatibility and strong elimination of bacteria under sunlight conditions, satisfying for the long-lasting contact usage. This finding not only showcases the promise of the porous materials-based fibrous membranes for efficient photocatalytic filter against pathogenic bioaerosols but also highlights the importance of accurate structural engineering for the advancement of sunlight-driven photocatalytic systems in environment and energy-related fields.
研究领域:
材料科学
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环境科学
·
纳米技术
·
光催化
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DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2022
·
IF 7.968
Qixing Zhou,Kai Fu,Xiangang Hu,Xiaokang Li,Ziyang Lai,Peng Yuan
Airborne microbes play critical roles in atmospheric ecology and human health, while the connections of microbial community with anthropic activity , such as heating supply patterns and chemical compositions of particulate matter (PM), remain unclear. The present study demonstrated that district heating supply regions exhibited higher microbial richness than non-district heating supply regions, and microbial richness in PM 1 (aerodynamic diameter ≤ 1 µm) was significantly lower than that in PM 10 (aerodynamic diameter ≤ 10 µm). Gram-positive bacteria were dominant, and Bacilli accounts for 85% of the noted bacteria. The total concentrations of heavy metals, polycyclic aromatic hydrocarbons (PAHs) and water-soluble ions increased with PM sizes. Heavy metals and PAHs in non-district heating supply regions showed significantly higher concentrations than that in district heating supply regions. Most of tested chemical compositions negatively contributed to microbial community diversity, except for Zn, Cr, Pyrene (Pyr), and Benzo[ a ]pyrene (Bap). The above results were also affected by heating supply patterns (district heating supply and non-district heating supply). There was a positive correlation between microbial community richness and •OH concentration, and microbial community richness decreased as PM specific surface area increased. This work reveals connections between the properties of PMs and the microbial community diversity with heating supply patterns, and gives novel insights to atmospheric health and carbon neutrality.
研究领域:
大气生态学
·
环境科学
·
微生物学
·
公共卫生
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）