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@ARTICLE{Liu:153893,
author = {Liu, Shurong and Vereecken, Harry and Brüggemann, Nicolas},
title = {{A} highly sensitive method for the determination of
hydroxylamine in soils},
journal = {Geoderma},
volume = {232-234},
issn = {0016-7061},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2014-03364},
pages = {117 - 122},
year = {2014},
abstract = {Hydroxylamine (HA) is a crucial intermediate in the first
step of nitrification, i.e., the oxidation of ammonium to
nitrite. Due to its reactivity, HA may play a key role in
soil N2O emission. To determine soil HA concentrations and
to explore the correlation between soil HA concentrations
and N2O emission rates, we developed a novel, extremely
sensitive method based on fast extraction of HA from the
soil at pH 1.7, oxidation of HA to N2O with Fe3 + and
analysis of the N2O with gas chromatography (GC). The new
method was tested on soil samples from a temperate Norway
spruce forest, comparing soil HA concentrations with N2O
emission rates determined with microincubations of the soil
samples in GC vials. Our results demonstrate that the new GC
method is extremely sensitive, being able to detect soil HA
contents as low as 0.3 μg N kg− 1 dry soil. HA content in
the forest soil samples ranged between 0.3 and 34.8 μg N
kg− 1 dry soil. Moreover, N2O emission rates were
significantly correlated with soil HA content (r2 = 0.80),
suggesting a key role of HA in N2O formation under aerobic
conditions.},
cin = {IBG-3},
ddc = {550},
cid = {I:(DE-Juel1)IBG-3-20101118},
pnm = {246 - Modelling and Monitoring Terrestrial Systems: Methods
and Technologies (POF2-246) / 255 - Terrestrial Systems:
From Observation to Prediction (POF3-255)},
pid = {G:(DE-HGF)POF2-246 / G:(DE-HGF)POF3-255},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000340315700013},
doi = {10.1016/j.geoderma.2014.05.006},
url = {https://juser.fz-juelich.de/record/153893},
}