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Zhang Q, Wang X, Sun F, Sun J, Liu J, Ouyang Z. Assessment of temporal and spatial differences of source apportionment of nitrate in an urban river in China, using δ15N and δ18O values and an isotope mixing model. Environmental Science and Pollution Research. 2015 Nov 03;22(24):20226–33. doi: 10.1007/s11356-015-5674-1. |