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NO3− concentration, nitrogen and oxygen isotopic compositions (δ15N and δ18O) of NO3− were measured in total suspended particulates (TSP) at Yongxing Island in the South China Sea (SCS) between Feb. 2013 and Jan. 2014, as well as on two cruises in the northern South China Sea (NSCS). Measurements aimed to identify NO3− sources, and possible chemical formation processes of NO3−. The δ15N and δ18O of...
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