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. 2021 Mar 22;11:6550. doi: 10.1038/s41598-021-85894-z

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© The Author(s) 2021

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Temporal variations in the daily OP_tm*(CA) and OP_tm*(F) and fractions of anthropogenic vs natural compounds, fine vs coarse particles, domestic vs transboundary contributions, and DTT-active elements. Temporal variations in (upper-left panels) the daily OP_tm*(CA) and OP_tm*(F) based on (red) the simulated (D01) and (blue) observed transition metals in TSP (nmol-DTT min⁻¹ m⁻³), (upper-right panels) 10-d mean simulated (D02) fractions of (red) anthropogenic compounds to the total compounds, (green) anthropogenic fine-mode particles to anthropogenic total particles, and (blue) anthropogenic domestic contributions to the total OP_tm*(CA) and OP_tm*(F), (lower-left panels) relative contributions of each metal to the observed and simulated OP_tm*(CA) and (lower-right panels) same as the lower-left panels but for OP_tm*(F) at Yonago. Note that the simulated concentration of TSP is equivalent to the simulated PM₁₀ concentration.