Fig. 1: Comparison of extractants for determination of soil cyanate concentration.
From: Cyanate is a low abundance but actively cycled nitrogen compound in soil
Cyanate recovery was assessed by spiking the extraction solution with potassium cyanate (final concentration of 15 nM). Three extractants (water, 10 mM Calcium sulfate (CaSO4), and 1 M Potassium chloride (KCl)) were tested for three soils: an alkaline grassland soil (soil pH = 8.3), a pH-neutral mixed forest soil (soil pH = 7.0) and an acidic grassland soil (soil pH = 4.3). Letters denote significant differences between extractants within each soil type (one-way ANOVA followed by Tukey’s HSD test, ɑ = 0.05). Asterisks indicate significant differences between added and recovered cyanate (t test, ɑ = 0.05). Shown are average values ±1 SE (n = 4).
