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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"><head> <title>Members of the IUPAC Commission on Isotopic Abundances and Atomic Weights</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <link rel="stylesheet" type="text/css" media="all" href="stylesheet.css"><link rel="shortcut icon" href="favicon.ico" /> <script type="text/javascript" src="js/jquery-1.11.1.min.js"></script> <script type="text/javascript"> var _gaq = _gaq || []; _gaq.push(['_setAccount', 'UA-37565923-4']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })(); </script></head> <body> <div id="pagewidth"> <div id="header-top" class="clearfix">  <div id="support-navigation"> <ul></ul> </div>  <div id="logo-top"> <a href="http://www.ciaaw.org"><img src="images/ciaaw.png" alt="Logo of the Atomic Weights Commission"></a> <a href="http://www.iupac.org" target="_blank"><img src="images/iupac.png" class="xx" alt="Logo of the International Union of Pure and Applied Chemistry"></a> </div>  <div id="main-navigation"> <ul> <li><a href="index.htm">Home</a></li> <li><a href="atomic-weights.htm">Atomic Weights</a></li> <li><a href="isotopic-abundances.htm">Isotopic Abundances</a></li> <li><a href="reference-materials.htm">Reference Materials</a></li> <li class="selected"><a href="commission.htm">The Commission</a></li> <li><a href="info.htm">FAQs</a></li> </ul> </div>  </div id="header-top">   <div id="breadcrumb"> <ul> <li><a class="selected">Current Members</a></li> <li><a href="historical-members.htm">Historical Members</a></li> <li><a href="chairs.htm">Chairs</a></li> <li><a href="nobel-laureates.htm">Nobel Laureates</a></li> <li><a href="subcommittees.htm">Subcommittees</a></li> <li><a href="bylaws.htm">Bylaws</a></li> <li><a href="history.htm">History</a></li> <li><a href="recognition.htm">Recognition</a></li> <li><a href="publications.htm">Publications</a></li> <li><a href="press.htm">Press</a></li> </ul></div>  <div id="content"> <div id="main-content"> <h1>CIAAW members</h1> <p>The current list of CIAAW members is in effect for 2022-2023. The Commission can be contacted via its Secretary by email to secretariat (at) ciaaw.org.</p><br> <div> <p style="text-align:center;"> <name style="font-size:90%;">Chair</name><br> <name><a href="http://iupac.org/member/johanna-irrgeher/" target="_blank">Prof. Johanna Irrgeher</a></name><br> The University of Leoben (Austria)<br><br> <name style="font-size:90%;">Secretary</name><br> <name><a href="http://iupac.org/member/jochen-vogl/" target="_blank">Dr. Jochen Vogl</a></name><br> Federal Institute for Materials Research and Testing<br>(Germany)<br><br> <name style="font-size:90%;">Titular members</name><br> </p></div> <div style="width:45%; padding-right:5%; display:inline-block;"> <p style="text-align:center"> <name><a href="https://www.researchgate.net/profile/Philip_Dunn" target="_blank">Dr. Philip J. H. Dunn</a></name><br>Acting Secretary (2025)<br> LGC Limited<br>(United Kingdom)<br> <br> <name><a href="http://www.rug.nl/staff/h.a.j.meijer/" target="_blank">Prof. Harro A. J. Meijer</a></name><br> University of Groningen (The Netherlands)<br> </div> <div style="width:45%; display:inline-block; vertical-align:top;"> <p style="text-align:center;"> <name><a href="https://www.nist.gov/people/antonio-possolo" target="_blank">Dr. Antonio Possolo</a></name><br> National Institute of Standards and Technology (USA)<br><br> <name><a href="http://en.nim.ac.cn/ourteams/45" target="_blank">Dr. Jun Wang</a></name><br> National Institute of Metrology (China)<br><br> </p> </div> <p style="text-align:center;"> <name style="font-size:90%;">Associate members</name></p> <div style="width:45%; padding-right:5%; display:inline-block; vertical-align:top;"> <p style="text-align:center;"> <name><a href="https://scholar.google.it/citations?user=YPKARisAAAAJ&hl=it" target="_blank">Federica Camin</a></name><br> International Atomic<br>Energy Agency (Austria)<br><br> <name><a href="http://iupac.org/member/juris-meija/" target="_blank">Dr. Juris Meija</a></name><br> National Research Council Canada (Canada)<br><br> </p> </div> <div style="width:45%; display:inline-block; vertical-align:top;"> <p style="text-align:center;"> <name><a href="http://iupac.org/member/thomas-prohaska/" target="_blank">Prof. Thomas Prohaska</a></name><br> The University of Leoben<br>(Austria)<br><br> <name><a href="" target="_blank">Prof. Yoshio Takahashi</a></name><br> University of Tokyo<br>(Japan)<br><br> </p> </div> <p style="text-align:center;"> <name style="font-size:90%;">Honorary members</name></p> <div style="width:45%; padding-right:5%; display:inline-block; vertical-align:top;"> <p style="text-align:center;"> <name><a href="" target="_blank">Dr. Tyler B. Coplen</a></name><br> United States Geological Survey (USA)<br><br> <name><a href="" target="_blank">Dr. Tiping Ding</a></name><br> Chinese Academy of Geological Sciences (China)<br><br> </p> </div> <br><br> <p> The Commission chooses its own members according to the IUPAC Bylaws (<a href="bylaws.htm">Section 3.3</a>) and the election results are formally approved by the IUPAC Bureau or Executive Committee. National Representatives are proposed to CIAAW by the IUPAC National Adhering Organizations and are subject to approval by CIAAW and by the IUPAC Bureau. </p> </div>  <div id="support-content"> <img src="images/ciaaw-2023.jpg" onclick='this.src="images/ciaaw-2023.jpg"' alt="Members of the Atomic Weights Commission at the 2023 biennial meeting in the Hague (The Netherlands)" title="The Atomic Weights Commission in 2023"> <p class="credit">CIAAW</p> <p class="caption"><strong>The 2023 Atomic Weights Commission biennial meeting (Hague, the Netherlands)</strong> (front row, from left) Tetsuya Yokoyama, Rebecca Kraft, Federica Camin, Johanna Irrgeher (Chair), Yoshio Takahashi, Jun Wang, Philip J.H. Dunn, (second row, from left) Thomas Prohaska, Ryan Ickert, Jochen Vogl (Secretary), Juris Meija, Harro A.J. Meijer, Manfred Gr枚ning, Xiang-Kun Zhu, Thomas Walczyk </p> <br> <form method="post" id="form" style="background:#f2f2f2;"> <p class="caption"> Select a date to view other photographs of the CIAAW meetings.</p> <select id="year" style="background:#FFFF66; width:55%; border: 1px solid #cce; border-radius:2px;" onchange="ciaaw(this.value);"> <option disabled selected>choose a meeting</option> <option value="2023">2023 (Hague, The Netherlands)</option> <option value="2021">2021 (virtual)</option> <option value="2019">2019 (Berlin, Germany)</option> <option value="2017">2017 (Groningen, The Netherlands)</option> <option value="2015">2015 (Vienna, Austria)</option> <option value="2013">2013 (Gebze, T眉rkiye)</option> <option value="2011">2011 (Calgary, Canada)</option> <option value="1997">1997 (Geneva, Switzerland)</option> <option value="1995">1995 (Guildford, UK)</option> <option value="1993">1993 (Lisbon, Portugal)</option> <option value="1991">1991 (Hamburg, Germany)</option> <option value="1989">1989 (Lund, Sweden)</option> <option value="1987">1987 (Boston, USA)</option> </select><br><br> </form><br> <div id="image"></div> <div id="image-credit"></div> <div id="image-text"></div> </div id="support-content">  </div id="content">  <div id="push"></div></div id="pagewidth">  <div id="footer"> <img src="images/logo.png"><br><br> <a href="privacy.htm">Privacy policy</a>  |  <a href="impressum.htm">Impressum</a>  |  <a href="members.htm">Contact</a>  |  © CIAAW, 2007-2020 <br> </div>  <script type="text/javascript"> function ciaaw(year) { $("#image").html(""); var n = document.createElement('img'); n.setAttribute('src', 'images/ciaaw-'+year+'.jpg'); document.getElementById("image").appendChild(n); $("#image-credit").html(""); var n1 = document.createElement('p'); n1.className = 'credit'; var c = document.createTextNode('CIAAW'); n1.appendChild(c) document.getElementById("image-credit").appendChild(n1); $("#image-text").html(""); var nn = document.createElement('p'); nn.className = 'caption'; nn.id = "z"; var q = document.createElement("strong"); var t2023 = document.createTextNode('2023 Atomic Weights Commission biennial meeting in the Netherlands'); var t2021 = document.createTextNode('2021 Atomic Weights Commission biennial meeting (virtual)'); var t2019 = document.createTextNode('2019 Atomic Weights Commission biennial meeting in Germany'); var t2017 = document.createTextNode('2017 Atomic Weights Commission biennial meeting in the Netherlands'); var t2015 = document.createTextNode('2015 Atomic Weights Commission biennial meeting in Austria'); var t2013 = document.createTextNode('2013 Atomic Weights Commission biennial meeting in T眉rkiye'); var t2011 = document.createTextNode('2011 Atomic Weights Commission biennial meeting in Canada'); var t1997 = document.createTextNode('1997 Atomic Weights Commission biennial meeting in Switzerland'); var t1995 = document.createTextNode('1995 Atomic Weights Commission biennial meeting in United Kingdom'); var t1993 = document.createTextNode('1993 Atomic Weights Commission biennial meeting in Portugal'); var t1991 = document.createTextNode('1991 Atomic Weights Commission biennial meeting in Germany'); var t1989 = document.createTextNode('1989 Atomic Weights Commission biennial meeting in Sweden'); var t1987 = document.createTextNode('1987 Atomic Weights Commission biennial meeting in USA'); if (year=="2023") nn.appendChild(q).appendChild(t2023); if (year=="2021") nn.appendChild(q).appendChild(t2021); if (year=="2019") nn.appendChild(q).appendChild(t2019); if (year=="2017") nn.appendChild(q).appendChild(t2017); if (year=="2015") nn.appendChild(q).appendChild(t2015); if (year=="2013") nn.appendChild(q).appendChild(t2013); if (year=="2011") nn.appendChild(q).appendChild(t2011); if (year=="1997") nn.appendChild(q).appendChild(t1997); if (year=="1995") nn.appendChild(q).appendChild(t1995); if (year=="1993") nn.appendChild(q).appendChild(t1993); if (year=="1991") nn.appendChild(q).appendChild(t1991); if (year=="1989") nn.appendChild(q).appendChild(t1989); if (year=="1987") nn.appendChild(q).appendChild(t1987); document.getElementById("image-text").appendChild(nn); if (year=="2023") document.getElementById("z").insertAdjacentHTML('beforeend', ' (front row, from left) Tetsuya Yokoyama, Rebecca Kraft, Federica Camin, Johanna Irrgeher (Chair), Yoshio Takahashi, Jun Wang, Philip J.H. 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