Table. 1.

Dual isotope compositions of nitrate derived from three types of Korean fertilizers (unit in ‰)


Inorganic fertilizer (IOF; n = 19) Organic fertilizer (OF; n = 30) Plant-based compound fertilizer (PCF; n = 24)



Sample δ15N (a) δ18O Sample δ15N δ18O Sample δ15N δ18O
IOF-1 3.8 0.1 18.9 0.7 OF-1 20.4 0.3 7.4 0.1 PCF-1 8.0 1.1 19.4 1.2
IOF-2 5.3 0.2 16.5 0.8 OF-2 -0.6 0.1 8.0 1.0 PCF-2 10.2 0.1 11.7 0.6
IOF-3 6.2 0.3 17.6 0.5 OF-3 21.7 1.0 7.4 0.4 PCF-3 2.0 0.3 19.4 0.6
IOF-4 3.9 0.0 17.3 0.7 OF-4 18.8 0.4 8.8 0.1 PCF-4 14.6 0.7 9.4 0.1
IOF-5 5.6 0.0 21.7 0.3 OF-5 15.0 0.2 11.0 0.5 PCF-5 17.8 0.3 17.7 0.1
IOF-6 4.7 0.1 19.0 0.7 OF-6 15.7 0.5 7.1 0.6 PCF-6 15.4 0.7 11.0 1.2
IOF-7 0.5 0.8 22.7 0.4 OF-7 10.9 0.1 1.6 0.8 PCF-7 13.2 0.2 18.3 0.5
IOF-8 0.9 0.6 21.8 1.1 OF-8 17.2 0.3 1.0 0.1 PCF-8 7.6 0.0 19.6 0.0
IOF-9 1.7 0.6 22.6 1.5 OF-9 23.2 0.1 14.4 0.4 PCF-9 0.7 0.1 10.6 0.8
IOF-10 0.4 0.1 21.9 1.2 OF-10 21.7 0.2 3.5 0.2 PCF-10 15.3 0.1 12.3 0.7
IOF-11 1.0 0.1 19.0 0.3 OF-11 2.1 0.2 4.4 0.2 PCF-11 8.7 0.2 12.7 0.6
IOF-12 3.0 0.0 20.9 0.6 OF-12 7.5 0.3 -4.0 0.8 PCF-12 12.5 0.2 13.8 0.1
IOF-13 2.0 0.1 20.4 0.2 OF-13 24.4 0.2 10.5 1.3 PCF-13 21.6 0.5 12.4 1.2
IOF-14 -0.9 0.6 15.1 0.2 OF-14 11.5 0.3 14.1 0.2 PCF-14 12.0 0.5 31.0 0.2
IOF-15 1.0 0.0 22.5 1.4 OF-15 24.0 0.8 7.6 0.1 PCF-15 15.4 0.1 1.8 0.8
IOF-16 3.8 0.4 16.5 0.0 OF-16 -1.2 0.1 4.4 0.6 PCF-16 6.8 0.1 24.8 1.1
IOF-17 -0.4 0.3 18.9 0.6 OF-17 12.2 0.0 5.4 0.1 PCF-17 1.8 0.3 21.1 0.2
IOF-18 -1.1 0.3 14.1 0.3 OF-18 22.6 0.2 12.5 0.2 PCF-18 15.5 0.2 17.3 0.1
IOF-19 7.6 0.2 19.7 1.4 OF-19 17.7 0.5 5.8 0.0 PCF-19 15.8 0.1 15.0 0.4
OF-20 -1.0 0.1 -2.8 0.1 PCF-20 4.7 0.6 22.6 0.7
OF-21 13.0 0.0 9.3 0.2 PCF-21 6.0 0.1 18.6 0.2
OF-22 9.4 0.2 -4.5 0.8 PCF-22 -1.0 0.0 20.3 0.2
OF-23 13.2 0.1 10.0 0.4 PCF-23 12.2 0.3 10.2 0.9
OF-24 26.2 0.2 10.7 0.3 PCF-24 25.5 0.9 12.9 1.3
OF-25 17.1 1.0 2.6 0.6
OF-26 13.2 0.0 3.0 0.4
OF-27 15.4 0.2 1.0 0.2
OF-28 22.9 0.2 6.0 0.3
OF-29 14.8 0.1 7.0 0.1
OF-30 12.1 0.0 4.5 0.0

(a) Uncertainty: two standard deviations

Episodes 2019;42:313~319 https://doi.org/10.18814/epiiugs/2019/019025
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