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PubMed Publications| Keyword search (4,163 papers available) |  |
"deposition" Keyword-tagged Publications:
| Title | Authors | PubMed ID | |
|---|---|---|---|
| 1 | Spatial Variations of Atmospheric Alkylated Polycyclic Aromatic Hydrocarbons across the Western Pacific to the Southern Ocean: Unexpected Increasing Deposition | Zhu FJ; Lu XM; Jia JW; Zhang X; Xing DF; Cai MH; Kallenborn R; Li YF; Muir DCG; Zhang ZF; Zhang X; | 40025703 CHEMBIOCHEM |
| 2 | Electroforming of Personalized Multi-Level and Free-Form Metal Parts Utilizing Fused Deposition Modeling-Manufactured Molds | Hamed H; Aghili S; Wüthrich R; Abou-Ziki JD; | 38930706 ENCS |
| 3 | Electric Field-Induced Nano-Assembly Formation: First Evidence of Silicon Superclusters with a Giant Permanent Dipole Moment | Jardali F; Tran J; Liège F; Florea I; Leulmi ME; Vach H; | 37570492 CERMM |
| Title: | Spatial Variations of Atmospheric Alkylated Polycyclic Aromatic Hydrocarbons across the Western Pacific to the Southern Ocean: Unexpected Increasing Deposition | ||||
| Authors: | Zhu FJ, Lu XM, Jia JW, Zhang X, Xing DF, Cai MH, Kallenborn R, Li YF, Muir DCG, Zhang ZF, Zhang X | ||||
| Link: | https://pubmed.ncbi.nlm.nih.gov/40025703/ | ||||
| DOI: | 10.1021/acs.est.4c12147 | ||||
| Publication: | Environmental science & technology | ||||
| Keywords: | air masses; alkylated polycyclic aromatic hydrocarbons; deposition; gas/particle partitioning; latitude distribution; occurrence; | ||||
| PMID: | 40025703 | Category: | Date Added: | 2025-03-03 | |
| Dept Affiliation: |
CHEMBIOCHEM
1 International Joint Research Center for Persistent Toxic Substances (IJRC-PTS), State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China. 2 School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China. 3 International Joint Research Center for Arctic Environment and Ecosystem (IJRC-AEE), Polar Academy, Harbin Institute of Technology, Harbin 150090, China. 4 Department of Chemistry and Biochemistry, Concordia University, Montreal, Quebec H3G 1M8, Canada. 5 Key Laboratory of Polar Science, Ministry of Natural Resources, Polar Research Institute of China, Shanghai 200136, China. 6 Faculty of Chemistry, Biotechnology and Food Science, Norwegian University Life Sciences (NMBU), Ås NO-1432, Norway. 7 University of the Arctic (UArctic), Rovaniemi 96300, Finland. 8 IJRC-PTS-NA, Toronto, Ontario M2N 6X9, Canada. 9 School of Environmental Sciences |
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Description: |
Spatial variations of atmospheric alkylated polycyclic aromatic hydrocarbons (Alk-PAHs) are key to understanding their long-range atmospheric transport (LRAT). However, limited Alk-PAHs data have hindered their LRAT characterizations on a global scale. In this study, 49 Alk-PAHs were measured in the atmospheric samples collected across the Western Pacific to the Southern Ocean. The summed concentration of 39 frequently detected Alk-PAHs (S39Alk-PAHs) was 25.8 ± 25.3 ng m-3. The concentrations of S39Alk-PAHs significantly declined with the decrease in latitude (°N). Higher concentrations (55.8 ± 33.8 ng m-3) were linked to continental air mass compared to oceanic/Antarctica air mass (17.0 ± 13.6 ng m-3), highlighting continental emissions as the primary source of marine atmospheric Alk-PAHs. An unexpected increase in the G/P partitioning ratio (KP) was found in samples farther away from the continent, which cannot be explained by the influence of temperature on the partitioning process. Deposition analysis suggested that gaseous concentrations and the G/P partitioning largely influenced deposition patterns. Hypothetical scenario analysis indicated that increased KP under snowy conditions could enhance the total Alk-PAH deposition. These findings emphasize the need for accurate characterization of partitioning and deposition processes when studying the global fate of Alk-PAHs, particularly in remote and polar regions. |
