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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-7-345-2014</article-id>
<title-group>
<article-title>Cavity ring-down spectroscopy sensor for detection of hydrogen chloride</article-title>
</title-group>
<contrib-group><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Hagen</surname>
<given-names>C. L.</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
<xref ref-type="aff" rid="aff5">
<sup>5</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Lee</surname>
<given-names>B. C.</given-names>
</name>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Franka</surname>
<given-names>I. S.</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>Rath</surname>
<given-names>J. L.</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>VandenBoer</surname>
<given-names>T. C.</given-names>
</name>
<xref ref-type="aff" rid="aff4">
<sup>4</sup>
</xref>
<xref ref-type="aff" rid="aff6">
<sup>6</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Roberts</surname>
<given-names>J. M.</given-names>
<ext-link>https://orcid.org/0000-0002-8485-8172</ext-link>
</name>
<xref ref-type="aff" rid="aff3">
<sup>3</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Brown</surname>
<given-names>S. S.</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>Yalin</surname>
<given-names>A. P.</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
</contrib-group><aff id="aff1">
<label>1</label>
<addr-line>Department of Mechanical Engineering, Colorado State University, Fort Collins, Colorado, USA</addr-line>
</aff>
<aff id="aff2">
<label>2</label>
<addr-line>Department of Physics, Colorado State University, Fort Collins, Colorado, USA</addr-line>
</aff>
<aff id="aff3">
<label>3</label>
<addr-line>NOAA Earth System Research Laboratory, Boulder, Colorado, USA</addr-line>
</aff>
<aff id="aff4">
<label>4</label>
<addr-line>Department of Chemistry, Memorial University of Newfoundland, St. Johns, Newfoundland, Canada</addr-line>
</aff>
<aff id="aff5">
<label>5</label>
<addr-line>now at: Oregon State University-Cascades, Bend, Oregon, USA</addr-line>
</aff>
<aff id="aff6">
<label>6</label>
<addr-line>now at: Department of Chemistry, University of Toronto, Toronto, Ontario, Canada</addr-line>
</aff>
<pub-date pub-type="epub">
<day>03</day>
<month>02</month>
<year>2014</year>
</pub-date>
<volume>7</volume>
<issue>2</issue>
<fpage>345</fpage>
<lpage>357</lpage>
<permissions>
<copyright-statement>Copyright: &#x000a9; 2014 C. L. Hagen et al.</copyright-statement>
<copyright-year>2014</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/7/345/2014/amt-7-345-2014.html">This article is available from https://amt.copernicus.org/articles/7/345/2014/amt-7-345-2014.html</self-uri>
<self-uri xlink:href="https://amt.copernicus.org/articles/7/345/2014/amt-7-345-2014.pdf">The full text article is available as a PDF file from https://amt.copernicus.org/articles/7/345/2014/amt-7-345-2014.pdf</self-uri>
<abstract>
<p>A laser-based cavity ring-down spectroscopy (CRDS) sensor for measurement of
hydrogen chloride (HCl) has been developed and characterized. The instrument
uses light from a distributed-feedback diode laser at 1742 nm coupled to a
high finesse optical cavity to make sensitive and quantifiable concentration
measurements of HCl based on optical absorption. The instrument has a
(1σ) limit of detection of &lt;20 pptv in 1 min and has high
specificity to HCl. The measurement response time to changes in input HCl
concentration is &lt;15 s. Validation studies with a previously calibrated
permeation tube setup show an accuracy of better than 10%. The CRDS sensor
was preliminarily tested in the field with two other HCl instruments (mist
chamber and chemical ionization mass spectrometry), all of which were in
broad agreement. The mist chamber and CRDS sensors both showed a 400 pptv
plume within 50 pptv agreement. The sensor also allows simultaneous sensitive
measurements of water and methane, and minimal hardware modification would
allow detection of other near-infrared absorbers.</p>
</abstract>
<counts><page-count count="13"/></counts>
</article-meta>
</front>
<body/>
<back>
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