Table 1 Characterization of nanofertilizers: nano nitrogen and nano zinc.

From: Effect of nitrogen and zinc nanofertilizer with the organic farming practices on cereal and oil seed crops

Parameters

Nano nitrogen

Nano zinc

Test method

Average physical size (nm)

28. 3 ± 5.8

22.3 ± 7.93

ISO 21363:2020

Average hydrodynamic size (nm)

56.6 ± 8.73

39.4 ± 12.3

ASTM E3247-20

Zeta potential (mV)

42.4 ± 1.32

34.2 ± 0.21

ISO13099-1

Viscosity (cPs)

9.65 ± 0.43

8.63 ± 0.32

ASTM D2196-10

pH

4.6 ± 0.03

3.2 ± 0.01

ASTM E70-07

Element (%)

4.3 ± 0.01

1.03 ± 0.001

ASTM D3590-02 and ASTM D8110-17

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