<?xml version="1.0" encoding="utf-8"?>
<export-example>
  <doc>
    <id>21865</id>
    <completedYear/>
    <publishedYear>2010</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>928</pageFirst>
    <pageLast>937</pageLast>
    <pageNumber/>
    <edition/>
    <issue>8</issue>
    <volume>29</volume>
    <type>article</type>
    <publisherName>Elsevier</publisherName>
    <publisherPlace>Amsterdam</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">IMEP-23: The eight EU-WFD priority PAHs in water in the presence of humic acid</title>
    <abstract language="eng">Recently, the International Measurement Evaluation Programme (IMEP) organized an interlaboratory comparison on total concentrations of eight polycyclic aromatic hydrocarbons (PAHs) in natural inland waters. It was carried out in support to the European Union Water Framework Directive (EU-WFD) that lists these eight as priority substances.

As sample matrix, we used groundwater spiked with humic acid as a model for the colloidal substances that are present in natural inland waters. Humic substances can adsorb PAHs, but we found that some laboratories did not apply analytical procedures that sufficiently accounted for this. One of these laboratories was involved in establishing the reference values. We show how this impacted on the reliability of their measurements.

Many participants accepted our invitation to report their measurement uncertainties. We assessed their results against our reference values and uncertainties, and provided z and zeta scores. Although the overall measurement capability appears satisfactory, there is room for improvement of analytical procedures as regards the use of measurement standards.</abstract>
    <parentTitle language="eng">Trends in analytical chemistry</parentTitle>
    <identifier type="old">24326</identifier>
    <identifier type="doi">10.1016/j.trac.2010.04.009</identifier>
    <identifier type="issn">0165-9936</identifier>
    <identifier type="issn">0703-7147</identifier>
    <enrichment key="bibliotheksstandort">Sonderstandort: Publica-Schrank</enrichment>
    <enrichment key="date_peer_review">30.08.2010</enrichment>
    <author>Johannes van de Kreeke</author>
    <author>B. de la Calle</author>
    <author>A. Held</author>
    <author>O. Bercaru</author>
    <author>M. Ricci</author>
    <author>P. Shegunova</author>
    <author>P. Taylor</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Dissolved organic matter (DOM)</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Humic substance</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Interlaboratory comparison (ILC)</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Internal standard</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>International measurement evaluation programme (IMEP)</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Polycyclic aromatic hydrocarbon (PAH)</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Reference value</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Uncertainty</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Water</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Water framework directive (WFD)</value>
    </subject>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access")</collection>
  </doc>
</export-example>
