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Different conditions

Nitrate concentration decrease [%]

Potential difference [mV]

Slope

R²

Complete Reduction

a

HNO₃

28.4

72.8

NA

NA

13 h

b

PLS

11.3

30

NA

NA

immediate

c

PLS-Reactor open to air

7.4

64.8

0.0335

(0.99789)

20 h

d

PLS-Lower temperature

6.2

40

0.027

(0.99967)

30 h

e

PLS-Absence of light

8.1

62.4

0.020

(0.99775)

40 h