Cited by 18Soil Carbon and Nitrogen DynamicsAtmospheric chemistry and aerosolsGroundwater and Isotope Geochemistry

Large variability in CO 2 and N 2 O emissions and in 15 N site preference of N 2 O from reactions of nitrite with lignin and its derivatives at different pH

Wei, Jing, Zhou, Minghua, Vereecken, Harry, Brüggemann, Nicolas·2017·Rapid Communications in Mass Spectrometry

Abstract

Rationale Chemodenitrification is an important N 2 O source in soil; however, knowledge about the production of CO 2 and N 2 O from abiotic nitrite‐SOM reactions, especially the N 2 O isotopic signatures (intramolecular 15 N site preference (SP), and δ 15 N bulk and δ 18 O values), is quite limited at present. Methods N 2 O and CO 2 emissions from chemical reactions of nitrite with lignin products were determined with gas chromatography, and their response surfaces as a function of pH from 3 to 6 and nitrite concentration from 0.1 to 0.5 mM were explored with polynomial regression. The intramolecular 15 N distribution of N 2 O, as well as δ 15 N bulk and δ 18 O values, were measured with an isotope ratio mass spectrometer coupled to an online pre‐concentration unit. The variability in N 2 O SP values was tested from pH 3 to 5, and for nitrite concentrations from 0.3 to 0.5 mM. Results Both CO 2 and N 2 O emissions varied largely with pH and the structure of lignin products. The highest N 2 O emission occurred at pH 4–5 in 4‐hydroxy‐3,5‐dimethoxybenzaldehyde and 4‐hydroxy‐3,5‐dimethoxybenzoic acid treatments, and at pH 3 in the treatments with lignin, 4‐hydroxy‐3‐methoxybenzaldehyde, 4‐hydroxy‐3‐methoxybenzoic acid, 4‐hydroxybenzaldehyde, and 4‐hydroxybenzoic acid. A wide range of N 2 O SP values (11.9–37.4‰), which was pH dependent and not distinguishable from microbial pathways, was observed at pH 3–5. The δ 15 N bulk and δ 18 O values of N 2 O were both in a similar range to that reported for fungal denitrification and bacterial denitrification. Conclusions These results present the first characterization of the isotopic composition of N 2 O from chemodenitrification in pure chemical assays. Chemical reactions of nitrite with lignin are pH‐dependent and associated with substantial CO 2 and N 2 O emissions. The SP values of N 2 O derived from chemodenitrification were neither distinguishable from the biotic pathways nor remained stable with varying pH. Therefore, the use of N 2 O isotopic signatures for source partitioning is restricted when chemodenitrification is contributing significantly to N 2 O emission.

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Crossref · 10.1002/rcm.7912

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Authors
Wei, J., Zhou, M., Vereecken, H., & Brüggemann, N.
Affiliations
Forschungszentrum Jülich (DE)
Corresponding author
Wei, Jing
Venue
Rapid Communications in Mass Spectrometry
Publisher
Wiley
Published
2017-07-10
Volume
31
Issue
16
Pages
1333-1343
ISSN
  • 0951-4198 (ISSN-L)
  • 1097-0231
OpenAlex
W2619181884
Cited by
18
References
46
Citations by year
2026: 1 · 2023: 1 · 2022: 2 · 2021: 3 · 2020: 5 · 2019: 5 · 2018: 1
FWCI
3.30
Type
journal article
Language
en
Open access
closed
Locations
  • Rapid Communications in Mass Spectrometry (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • German Federal Ministry of Science and Education (INPLAMINT (FKZ 031A561A))
  • Chinese Scholarship Council (201406890023)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Soil Science › Soil Carbon and Nitrogen Dynamics
  • Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Atmospheric chemistry and aerosols
  • Physical Sciences › Earth and Planetary Sciences › Geochemistry and Petrology › Groundwater and Isotope Geochemistry
Keywords
nitrite, lignin, lignin derivatives, CO2 emissions, pH dependence, nitrite content, soil nitrogen cycling, lignin oxidation products, 4-hydroxybenzaldehyde

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