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<front>
<journal-meta>
<journal-id journal-id-type="publisher">AMT</journal-id>
<journal-title-group>
<journal-title>Atmospheric Measurement Techniques</journal-title>
<abbrev-journal-title abbrev-type="publisher">AMT</abbrev-journal-title>
<abbrev-journal-title abbrev-type="nlm-ta">Atmos. Meas. Tech.</abbrev-journal-title>
</journal-title-group>
<issn pub-type="epub">1867-8548</issn>
<publisher><publisher-name>Copernicus Publications</publisher-name>
<publisher-loc>Göttingen, Germany</publisher-loc>
</publisher>
</journal-meta>
<article-meta>
<article-id pub-id-type="doi">10.5194/amt-3-91-2010</article-id>
<title-group>
<article-title>Field inter-comparison of eleven atmospheric ammonia measurement techniques</article-title>
</title-group>
<contrib-group><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>von Bobrutzki</surname>
<given-names>K.</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Braban</surname>
<given-names>C. F.</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Famulari</surname>
<given-names>D.</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Jones</surname>
<given-names>S. K.</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Blackall</surname>
<given-names>T.</given-names>
</name>
<xref ref-type="aff" rid="aff3">
<sup>3</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Smith</surname>
<given-names>T. E. L.</given-names>
</name>
<xref ref-type="aff" rid="aff3">
<sup>3</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Blom</surname>
<given-names>M.</given-names>
</name>
<xref ref-type="aff" rid="aff4">
<sup>4</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Coe</surname>
<given-names>H.</given-names>
</name>
<xref ref-type="aff" rid="aff5">
<sup>5</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Gallagher</surname>
<given-names>M.</given-names>
</name>
<xref ref-type="aff" rid="aff5">
<sup>5</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Ghalaieny</surname>
<given-names>M.</given-names>
</name>
<xref ref-type="aff" rid="aff5">
<sup>5</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>McGillen</surname>
<given-names>M. R.</given-names>
</name>
<xref ref-type="aff" rid="aff5">
<sup>5</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Percival</surname>
<given-names>C. J.</given-names>
</name>
<xref ref-type="aff" rid="aff5">
<sup>5</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Whitehead</surname>
<given-names>J. D.</given-names>
</name>
<xref ref-type="aff" rid="aff5">
<sup>5</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Ellis</surname>
<given-names>R.</given-names>
</name>
<xref ref-type="aff" rid="aff6">
<sup>6</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Murphy</surname>
<given-names>J.</given-names>
</name>
<xref ref-type="aff" rid="aff6">
<sup>6</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Mohacsi</surname>
<given-names>A.</given-names>
</name>
<xref ref-type="aff" rid="aff7">
<sup>7</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Pogany</surname>
<given-names>A.</given-names>
</name>
<xref ref-type="aff" rid="aff8">
<sup>8</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Junninen</surname>
<given-names>H.</given-names>
</name>
<xref ref-type="aff" rid="aff9">
<sup>9</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Rantanen</surname>
<given-names>S.</given-names>
</name>
<xref ref-type="aff" rid="aff9">
<sup>9</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Sutton</surname>
<given-names>M. A.</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Nemitz</surname>
<given-names>E.</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
</contrib-group><aff id="aff1">
<label>1</label>
<addr-line>Centre for Ecology and Hydrology (CEH) Edinburgh, Bush Estate, Penicuik, EH26 0QB, UK</addr-line>
</aff>
<aff id="aff2">
<label>2</label>
<addr-line>Leibniz-Institute for Agricultural Engineering, Potsdam, Germany</addr-line>
</aff>
<aff id="aff3">
<label>3</label>
<addr-line>Department of Geography, King&apos;s College London, London, UK</addr-line>
</aff>
<aff id="aff4">
<label>4</label>
<addr-line>Energy Research Foundation of the Netherlands, Petten, The Netherland</addr-line>
</aff>
<aff id="aff5">
<label>5</label>
<addr-line>School of Earth, Atmospheric and Environmental Science, University of Manchester, Manchester, UK</addr-line>
</aff>
<aff id="aff6">
<label>6</label>
<addr-line>Department of Chemistry, University of Toronto, Toronto, Canada</addr-line>
</aff>
<aff id="aff7">
<label>7</label>
<addr-line>Research Group on Laser Physics of the Hungarian Academy of Sciences, Budapest, Hungary</addr-line>
</aff>
<aff id="aff8">
<label>8</label>
<addr-line>Department of Optics and Quantum Electronics, University of Szeged, Szeged, Hungary</addr-line>
</aff>
<aff id="aff9">
<label>9</label>
<addr-line>Department of Physics, University of Helsinki, Helsinki, Finland</addr-line>
</aff>
<pub-date pub-type="epub">
<day>27</day>
<month>01</month>
<year>2010</year>
</pub-date>
<volume>3</volume>
<issue>1</issue>
<fpage>91</fpage>
<lpage>112</lpage>
<permissions>
<copyright-statement>Copyright: &#x000a9; 2010 K. von Bobrutzki et al.</copyright-statement>
<copyright-year>2010</copyright-year>
<license license-type="open-access">
<license-p>This work is licensed under the Creative Commons Attribution 3.0 Unported License. To view a copy of this licence, visit <ext-link ext-link-type="uri"  xlink:href="https://creativecommons.org/licenses/by/3.0/">https://creativecommons.org/licenses/by/3.0/</ext-link></license-p>
</license>
</permissions>
<self-uri xlink:href="https://amt.copernicus.org/articles/3/91/2010/amt-3-91-2010.html">This article is available from https://amt.copernicus.org/articles/3/91/2010/amt-3-91-2010.html</self-uri>
<self-uri xlink:href="https://amt.copernicus.org/articles/3/91/2010/amt-3-91-2010.pdf">The full text article is available as a PDF file from https://amt.copernicus.org/articles/3/91/2010/amt-3-91-2010.pdf</self-uri>
<abstract>
<p>Eleven instruments for the measurement of ambient concentrations of
atmospheric ammonia gas (NH&lt;sub&gt;3&lt;/sub&gt;), based on eight different measurement
methods were inter-compared above an intensively managed agricultural field
in late summer 2008 in Southern Scotland. To test the instruments over a
wide range of concentrations, the field was fertilised with urea midway
through the experiment, leading to an increase in the average concentration
from 10 to 100 ppbv. The instruments deployed included three wet-chemistry
systems, one with offline analysis (annular rotating batch denuder, RBD) and
two with online-analysis (Annular Denuder sampling with online Analysis,
AMANDA; AiRRmonia), two Quantum Cascade Laser Absorption Spectrometers (a
large-cell dual system; DUAL-QCLAS, and a compact system; c-QCLAS), two
photo-acoustic spectrometers (WaSul-Flux; Nitrolux-100), a Cavity Ring Down
Spectrosmeter (CRDS), a Chemical Ionisation Mass Spectrometer (CIMS), an ion
mobility spectrometer (IMS) and an Open-Path Fourier Transform
Infra-Red (OP-FTIR) Spectrometer. The instruments were compared with each
other and with the average concentration of all instruments. An overall good
agreement of hourly average concentrations between the instruments
(&lt;i&gt;R&lt;/i&gt;&lt;sup&gt;2&lt;/sup&gt;&amp;gt;0.84), was observed for NH&lt;sub&gt;3&lt;/sub&gt; concentrations at the field of up to
120 ppbv with the slopes against the average ranging from 0.67 (DUAL-QCLAS)
to 1.13 (AiRRmonia) with intercepts of &amp;minus;0.74 ppbv (RBD) to +2.69 ppbv
(CIMS). More variability was found for performance for lower concentrations
(&amp;lt;10 ppbv). Here the main factors affecting measurement precision are
(a) the inlet design, (b) the state of inlet filters (where applicable), and
(c) the quality of gas-phase standards (where applicable). By reference to the
fast (1 Hz) instruments deployed during the study, it was possible to
characterize the response times of the slower instruments.</p>
</abstract>
<counts><page-count count="22"/></counts>
</article-meta>
</front>
<body/>
<back>
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