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• W3136513212 endingPage "111022" @default.
• W3136513212 startingPage "111022" @default.
• W3136513212 abstract "Multiple sources contribute to nitrogen(N) and phosphorus (P) pollution in lowland urban rivers, and apportioning the sources of N and P pollution is essential for improving the ecological health of urban environments. Three urban polders in Jiaxing were selected to investigate the temporal variations of N and P pollutants in lowland urban river waters under dry and wet conditions. Moreover, the main potential sources of N and P pollution were identified through the correlations of pollutants and components of dissolved organic matter (DOM) derived from excitation-emission matrix (EEM) and parallel factor analysis (PARAFAC). The results indicate that the main pollution sources identified with PCA method were consistent with the potential sources revealed by DOM's EEM-PARAFAC components. Furthermore, absolute principal components score combined with multivariate linear regression (APCS-MLR) was conducted. The results illustrated that domestic wastewater contributes more than 70% of N pollution and river-bottom sediments contribute more than 50% of P pollution under dry conditions. On the contrary, discharged water from the stormwater outlets contributes more than 41% of P and 75% of N under wet conditions. Specifically, about 48% of them come from domestic wastewater, and about 38% come from urban surface runoff. This study highlights the effectiveness of DOM components derived from EEM-PARAFAC in identifying the sources of N and P pollution and the PCA-APCS-MLR in apportioning the contributions of each potential pollution source in lowland urban rivers. • Temporal variations and source apportionment of N and P pollutants in lowland urban surface waters were investigated. • The sources of N and P were identified under dry and wet weather conditions. • Wastewater and sediment were the main N and P sources under dry-weather conditions. • Wastewater and runoff contribute 48% and 38% of the pollution from stormwater outlets under wet-weather conditions." @default.
• W3136513212 created "2021-03-29" @default.
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• W3136513212 date "2021-06-01" @default.
• W3136513212 modified "2023-09-24" @default.
• W3136513212 title "The source apportionment of N and P pollution in the surface waters of lowland urban area based on EEM-PARAFAC and PCA-APCS-MLR" @default.
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• W3136513212 doi "https://doi.org/10.1016/j.envres.2021.111022" @default.
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• W3136513212 hasPublicationYear "2021" @default.
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