Traceability of Nitrogen and Oxygen Isotopes in Nitrates with the SIAR Model: Case Study on the Wangbeng Interval of the Huaihe River Basin. - Rongrong Tong; Liangmin Gao; Zhendong Pang; Xin Gu; Xiaoqing Chen; Jinxin Zhang; Hui Wang; Shuo Wang; Chuang Shi; Xudong Chen (Polish Journal of Environmental Studies, 2022)