Linked Life Data

11718347

Source:http://linkedlifedata.com/resource/pubmed/id/11718347

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
21
pubmed:dateCreated
2001-11-22
pubmed:abstractText
Our purpose was to measure simultaneous fluxes from soil of both N2O and N2 from the same plot in the field using the 15N-gas "nonequilibrium" technique (i.e., the "Hauck" technique) as used previously for N2. We accommodated analysis of N2O by modifying the head amplifier of our mass spectrometer. Our system accurately measured the 15N enrichments of labeled soil slurries for both N2 and N2O. In the field, we measured flux of N2 and N2O during soil denitrification from a 15N-labeled plot of winter wheat. Nine chamber incubations were conducted over 4 days. N2 flux ranged from below detection limit (<0.022 g x m(-2) x d(-1)) to 0.055 g x m(-2) x d(-1). N2O flux ranged from 0.0002 to 0.0027 g N2O-N x m(-2) x d(-1), with a detection limit of 1.0 x 10(-6) g N2O-N x m(-2) x d(-1). For N2O flux, the 15N-gas technique and gas chromatography technique agreed well (r = 0.98). The 15N enrichment of the soil mineral pool undergoing denitrification, measured nondestructively using the N2O data, dropped from about 0.82 to 0.72 atom fraction 15N over 4 days. Applying the 15N-gas nonequilibrium technique to N2O complements its use for 15N-N2 analysis when studying the relative production of N2O and N2 during denitrification.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0013-936X
pubmed:author
pubmed:issnType
Print
pubmed:day
1
pubmed:volume
35
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
4307-12
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2001
pubmed:articleTitle
Measuring simultaneous fluxes from soil of N2O and N2 in the field Using the 15N-gas "nonequilibium" technique.
pubmed:affiliation
W. K. Kellogg Biological Station and Department of Crop and Soil Sciences, Michigan State University, Hickory Corners 49060, USA. Tbergsma@kbs.msu.edu
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, Non-P.H.S., Research Support, Non-U.S. Gov't