The data shows Net Nitrogen Mineralization occurring in GIRF bioretention from August 2013 to October 30, 2014. Net nitrogen mineralization is calculated as the difference in inorganic N content (NO3-N, NO2-N, NH4-N) between incubated (soil samples inside PVC pipes) soil samples and non-incubated soil samples every two weeks. Hach kits (TNT 835 Low Range (accurate between 0.23-13.5 mg/L), TNT 839 Low Range (accurate between 0.015-0.6 mg/L), and TNT 830 Ultra Low Range (accurate between 0.015-2 mg/L)) were used for measuring inorganic content in the soil. TN was measured using HachTM persulfate digestion method 10208 (accurate between 1 mg/l-16 mg/l) every two weeks. Then, N concentration in all samples was quantified using a Hach 6500 spectrometer (HachTM Company, Loveland, CO).
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