Active dissolved organic nitrogen cycling in Yellow River and environmental implications

This is the datasets for "Active dissolved organic nitrogen cycling in large river and environmental implications- A case study of Yellow River, China", including:
(1) The concentration of DIN and DON before and after TFF treatment
(2) The Recovery of TFF and SPE
(3) δ15N of DON<1kDa and DON>10kDa

本数据集用于研究《大型河流活性溶解有机氮循环及环境意义——以中国黄河为例》，包含以下内容：
(1) 溶解无机氮（Dissolved Inorganic Nitrogen, DIN）与溶解有机氮（Dissolved Organic Nitrogen, DON）经切向流过滤（Tangential Flow Filtration, TFF）处理前后的浓度
(2) 切向流过滤与固相萃取（Solid Phase Extraction, SPE）的回收率
(3) 截留分子量小于1kDa与大于10kDa的溶解有机氮的δ15N同位素比值