Abstract
The contribution of urban non-point source (NPS) pollution to surface water pollution has gradually increased, analyzing the sources of urban NPS pollution is of great significance for precisely controlling surface water pollution. A bibliometric analysis of relevant research literature from 2000 to 2021 reveals that the main methods used in the source analysis research of urban NPS pollution include the emission inventory approach, entry-exit mass balance approach, principal component analysis (PCA), positive matrix factorization (PMF) model, etc. These methods are primarily applied in three aspects: source analysis of rainfall-runoff pollution, source analysis of wet weather flow (WWF) pollution in combined sewers, and analysis of the contribution of urban NPS to the surface water pollution load. The application of source analysis methods in urban NPS pollution research has demonstrated an evolution from qualitative to quantitative, and further towards precise quantification. This progression has transitioned from predominantly relying on on-site monitoring to incorporating model simulations and employing mathematical statistical analyses for traceability. This paper reviews the principles, advantages, disadvantages, and the scope of application of these methods. It also aims to address existing problems and analyze potential future development directions, providing valuable references for subsequent related research.
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This research was financially supported by the National Key Research and Development Program of China (No. 2021YFC3201504).
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Bingquan Lin: conceptualization, writing—original draft, writing—review and editing, data curation, visualization. Fei Qi: conceptualization, methodology, writing—review and editing, supervision. Xinqi An: methodology, investigation. Chen Zhao: methodology, investigation. Yahong Gao: methodology, investigation. Yuxuan Liu: methodology, investigation. Yin Zhong: methodology, investigation. Bin Qiu: methodology, investigation. Zhenbei Wang: methodology, investigation. Qian Hu: methodology, investigation. Chen Li: methodology, investigation. Dezhi Sun: resources, writing—review and editing, supervision, project administration, funding acquisition.
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Lin, B., Qi, F., An, X. et al. Review: The application of source analysis methods in tracing urban non-point source pollution: categorization, hotspots, and future prospects. Environ Sci Pollut Res 31, 23482–23504 (2024). https://doi.org/10.1007/s11356-024-32602-9
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DOI: https://doi.org/10.1007/s11356-024-32602-9