<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0120-2804</journal-id>
<journal-title><![CDATA[Revista Colombiana de Química]]></journal-title>
<abbrev-journal-title><![CDATA[Rev.Colomb.Quim.]]></abbrev-journal-title>
<issn>0120-2804</issn>
<publisher>
<publisher-name><![CDATA[Departamento de Química,  Universidad Nacional de Colombia.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0120-28042018000100016</article-id>
<article-id pub-id-type="doi">10.15446/rev.colomb.quim.v47n1.62240</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Método cualitativo rápido ( screening ) para ladetección de residuos de plaguicidas en frutas y hortalizas]]></article-title>
<article-title xml:lang="en"><![CDATA[Qualitative screening method for pesticide residues detection in fruits and vegetables]]></article-title>
<article-title xml:lang="pt"><![CDATA[Método qualitativo rápido (screening) para a detecção de resíduos de pesticidas nas frutas e nos vegetais]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Huérfano Barco]]></surname>
<given-names><![CDATA[Iván Mauricio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Guerrero Dallos]]></surname>
<given-names><![CDATA[Jairo Arturo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional de Colombia Departamento de Química Laboratorio de Análisis de Residuos de Plaguicidas]]></institution>
<addr-line><![CDATA[Bogotá D.C]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2018</year>
</pub-date>
<volume>47</volume>
<numero>1</numero>
<fpage>16</fpage>
<lpage>26</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0120-28042018000100016&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0120-28042018000100016&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0120-28042018000100016&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Debido a la importancia de desarrollar metodologías que permitan el análisis de los residuos agrícolas, el presente trabajo validó un método cualitativo rápido (screening) para el análisis de residuos de plaguicidas en frutas y hortalizas. La metodología se basó en el método de extracción QuEChERS, versión europea, con un paso adicional de limpieza por cromatografía de permeación por gel (GPC), lo cual permitió reducir la cantidad de componentes de la matriz en el extracto final. El análisis fue realizado por cromatografía de gases/espectrometría de masas con un analizador cuadrupolo simple. La metodología resultó adecuada para el análisis cualitativo de 31 plaguicidas a su respectivo límite máximo de residuos. Los resultados en muestras reales fueron consistentes respecto a una metodología cuantitativa de rutina, por ende, la metodología resultó ser una buena alternativa para el análisis rápido de estos contaminantes.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Because of the importance of developing methodologies that allow agricultural residues analysis, a rapid screening qualitative method for the determination of pesticides residues in fruits and vegetables was validated. The methodology was based on the European QuEChERS extraction method with an additional cleaning step by gel permeation chromatography (GPC), which helped to reduce the number of matrix components in the final extract. The analysis was carried out by gas chromatography coupled to mass spectrometry with a single quadrupole analyzer. The methodology was appropriate for the qualitative analysis of 31 pesticides at their respective maximum residue limits. Consistent results were obtained with respect to a quantitative routine methodology in the analysis of real samples, hence the methodology was proven to be a good alternative for the fast analysis of these contaminants in fruits and vegetables.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo Devido à importância de desenvolver metodologias que permitam analisar os resíduos agrícolas, o presente trabalho validou de um método qualitativo rápido (screening) para a análise de resíduos de pesticidas nas frutas e vegetais. A metodologia foi baseada no método de extração QuEChERS versão Europeia com um passo adicional de limpeza por meio de cromatografia de permeação em gel (GPC), o que permitiu reduzir a quantidade de componentes de matriz no extrato final. A análise foi realizada por cromatografia gasosa/espectrometria de massa com um analisador de quadrupolo simples. A metodologia foi adequada para a análise qualitativa de 31 pesticidas aos seus respectivos limites máximos de resíduos. Os resultados obtidos em amostras reais foram consistentes com uma metodologia quantitativa de rotina, portanto, a metodologia estudada tem demonstrado ser uma boa alternativa para a análise rápida destes contaminantes em frutas e vegetais.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[cromatografía de gases]]></kwd>
<kwd lng="es"><![CDATA[espectrometría de masas]]></kwd>
<kwd lng="es"><![CDATA[QuEChERS]]></kwd>
<kwd lng="es"><![CDATA[validación]]></kwd>
<kwd lng="es"><![CDATA[método cualitativo rápido]]></kwd>
<kwd lng="en"><![CDATA[Gas chromatography]]></kwd>
<kwd lng="en"><![CDATA[mass spectrometry]]></kwd>
<kwd lng="en"><![CDATA[QuEChERS]]></kwd>
<kwd lng="en"><![CDATA[validation]]></kwd>
<kwd lng="en"><![CDATA[screening method]]></kwd>
<kwd lng="pt"><![CDATA[cromatografia em fase gasosa]]></kwd>
<kwd lng="pt"><![CDATA[espectrometria de massa]]></kwd>
<kwd lng="pt"><![CDATA[QuEChERS]]></kwd>
<kwd lng="pt"><![CDATA[validação]]></kwd>
<kwd lng="pt"><![CDATA[método de triagem.]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<label>1</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Popp]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Peto]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<name>
<surname><![CDATA[Nagy]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Pesticide productivity and food security]]></article-title>
<source><![CDATA[A review. Agron. Sustain. Dev]]></source>
<year>2013</year>
<volume>33</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>243-55</page-range></nlm-citation>
</ref>
<ref id="B2">
<label>2</label><nlm-citation citation-type="">
<collab>Codex Alimentarius</collab>
<source><![CDATA[]]></source>
<year></year>
</nlm-citation>
</ref>
<ref id="B3">
<label>3</label><nlm-citation citation-type="">
<collab>European Commission Pesticide Data Base</collab>
<source><![CDATA[]]></source>
<year></year>
</nlm-citation>
</ref>
<ref id="B4">
<label>4</label><nlm-citation citation-type="">
<collab>Regulation of pesticide residues in food US-EPA</collab>
<source><![CDATA[]]></source>
<year></year>
</nlm-citation>
</ref>
<ref id="B5">
<label>5</label><nlm-citation citation-type="">
<collab>Food and Agricultural Materials Inspection Center (FAMIC)</collab>
<source><![CDATA[]]></source>
<year></year>
</nlm-citation>
</ref>
<ref id="B6">
<label>6</label><nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Macbean]]></surname>
<given-names><![CDATA[E. C]]></given-names>
</name>
</person-group>
<source><![CDATA[A world Compendium The Pesticide Manual]]></source>
<year>2006</year>
<edition>6th</edition>
<page-range>1-557</page-range><publisher-loc><![CDATA[British Crop Production Counsil: Hampshire, UK ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B7">
<label>7</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Fernández-Alba]]></surname>
<given-names><![CDATA[A. R.]]></given-names>
</name>
<name>
<surname><![CDATA[García]]></surname>
<given-names><![CDATA[J. F]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Large-scale multi-residue methods for pesticides and their degradation products in food by advanced LC-MS]]></article-title>
<source><![CDATA[TrAC Trends Anal. Chem]]></source>
<year>2008</year>
<volume>27</volume>
<numero>11</numero>
<issue>11</issue>
<page-range>973-90</page-range></nlm-citation>
</ref>
<ref id="B8">
<label>8</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Zamubio]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Vanoy]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<name>
<surname><![CDATA[Díaz]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Desarrolllo y validación de un método multiresiduo para el análisis de plaguicidas en miel por UFLC-MS]]></article-title>
<source><![CDATA[Rev. Colomb. Quim]]></source>
<year>2017</year>
<volume>46</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>24-36</page-range></nlm-citation>
</ref>
<ref id="B9">
<label>9</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Guerrero]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Velandia]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Comparación de dos metodologías para la determinación de residuos plagucidas en agua potable]]></article-title>
<source><![CDATA[Rev. Colomb. Quim]]></source>
<year>2014</year>
<volume>43</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>17-24</page-range></nlm-citation>
</ref>
<ref id="B10">
<label>10</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rodriguez]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Diaz]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Ahumada]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Guerrero]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Desarrollo y optimización de una metodología multiresiduo por el método simplex para el análisis de plaguicidas en miel de abejas]]></article-title>
<source><![CDATA[Rev. Colomb. Quim]]></source>
<year>2013</year>
<volume>42</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>13-21</page-range></nlm-citation>
</ref>
<ref id="B11">
<label>11</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bastias]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Guerrero]]></surname>
<given-names><![CDATA[j.]]></given-names>
</name>
<name>
<surname><![CDATA[Wyckhuys]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Residuos de plaguicidas en cultivos de pasifloras en regiones de alta producción en Colombia]]></article-title>
<source><![CDATA[Rev. Colomb. Quim]]></source>
<year>2013</year>
<volume>42</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>39-47</page-range></nlm-citation>
</ref>
<ref id="B12">
<label>12</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Portolés]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
<name>
<surname><![CDATA[Mol]]></surname>
<given-names><![CDATA[J G J.]]></given-names>
</name>
<name>
<surname><![CDATA[Sancho]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[López]]></surname>
<given-names><![CDATA[V.]]></given-names>
</name>
<name>
<surname><![CDATA[Hernández]]></surname>
<given-names><![CDATA[F J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Validation of a qualitative screening method for pesticides in fruits and vegetables by gas chromatography quadrupole-time of flight mass spectrometry with atmospheric pressure chemical ionization]]></article-title>
<source><![CDATA[Anal. Chim. Acta]]></source>
<year>2014</year>
<volume>838</volume>
<page-range>76-85</page-range></nlm-citation>
</ref>
<ref id="B13">
<label>13</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Portolés]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
<name>
<surname><![CDATA[Pitarch]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[López]]></surname>
<given-names><![CDATA[F. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Hernández]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Development and validation of a rapid and wide-scope qualitative screening method for detection and identification of organic pollutants in natural water and wastewater by gas chromatography time-of-flight mass spectrometry]]></article-title>
<source><![CDATA[J. Chromatogr. A]]></source>
<year>2011</year>
<volume>1228</volume>
<page-range>303-15</page-range></nlm-citation>
</ref>
<ref id="B14">
<label>14</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Díaz]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Ibáñez]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Sancho]]></surname>
<given-names><![CDATA[J. V.]]></given-names>
</name>
<name>
<surname><![CDATA[Hernández]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Target and non-target screening strategies for organic contaminants, residues and illicit substances in food, environmental and human biological samples by UHPLC-QTOF-MS]]></article-title>
<source><![CDATA[Anal. Methods]]></source>
<year>2012</year>
<volume>4</volume>
<page-range>196-09</page-range></nlm-citation>
</ref>
<ref id="B15">
<label>15</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Farré]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Picó]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
<name>
<surname><![CDATA[Barceló]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Application of ultra-high pressure liquid chromatography linear ion-trap orbitrap to qualitative and quantitative assessment of pesticide residues]]></article-title>
<source><![CDATA[J. Chromatogr. A]]></source>
<year>2014</year>
<volume>1328</volume>
<page-range>66-79</page-range></nlm-citation>
</ref>
<ref id="B16">
<label>16</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rajski]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Gómez-Ramos]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Fernández-Alba]]></surname>
<given-names><![CDATA[A. R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Large pesticide multiresidue screening method by liquid chromatography-Orbitrap mass spectrometry in full scan mode applied to fruit and vegetables]]></article-title>
<source><![CDATA[J. Chromatogr. A]]></source>
<year>2014</year>
<volume>1360</volume>
<page-range>119-27</page-range></nlm-citation>
</ref>
<ref id="B17">
<label>17</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[López]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[García]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Stead]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Roberts]]></surname>
<given-names><![CDATA[S. L.]]></given-names>
</name>
<name>
<surname><![CDATA[McCullagh]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Ramesh]]></surname>
<given-names><![CDATA[M R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Evaluation and validation of an accurate mass screening method for the analysis of pesticides in fruits and vegetables using liquid chromatography- quadrupole-time of flightmass spectrometry with automated detection]]></article-title>
<source><![CDATA[J. Chromatogr. A]]></source>
<year>2014</year>
<volume>1373</volume>
<page-range>40-50</page-range></nlm-citation>
</ref>
<ref id="B18">
<label>18</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rajski]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Gómez-Ramos]]></surname>
<given-names><![CDATA[M del M]]></given-names>
</name>
<name>
<surname><![CDATA[Fernández-Alba]]></surname>
<given-names><![CDATA[A R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Large pesticide multiresidue screening method by li uid chromatography-Orbitrap mass spectrometry in full scan mode applied to fruit and vegetables]]></article-title>
<source><![CDATA[J. Chromatogr. A]]></source>
<year>2014</year>
<volume>1360</volume>
<page-range>119-27</page-range></nlm-citation>
</ref>
<ref id="B19">
<label>19</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gómez]]></surname>
<given-names><![CDATA[M. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Gómez-Ramos]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Mezcua]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Herrera]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Fernández-Alba]]></surname>
<given-names><![CDATA[A. R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A new gas chromatography/mass spectrometry method for the simultaneous analysis of target and non-target organic contaminants in waters]]></article-title>
<source><![CDATA[J. Chromatogr. A]]></source>
<year>2009</year>
<volume>1216</volume>
<numero>18</numero>
<issue>18</issue>
<page-range>4071-82</page-range></nlm-citation>
</ref>
<ref id="B20">
<label>20</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mol]]></surname>
<given-names><![CDATA[H. G. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Reynolds]]></surname>
<given-names><![CDATA[S. L.]]></given-names>
</name>
<name>
<surname><![CDATA[Fussell]]></surname>
<given-names><![CDATA[R. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Stajnbaher]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Guidelines for the validation of qualitative multi-residue methods used to detect pesticides in food]]></article-title>
<source><![CDATA[Drug Test. Anal]]></source>
<year>2012</year>
<volume>4</volume>
<numero>^s1</numero>
<issue>^s1</issue>
<supplement>1</supplement>
<page-range>10-6</page-range></nlm-citation>
</ref>
<ref id="B21">
<label>21</label><nlm-citation citation-type="">
<collab>Norma Técnica Colombiana NTC-ISO/TEC 17025</collab>
<source><![CDATA[Requisitos generales para la competencia de los laboratorios de ensayo y calibración]]></source>
<year>2005</year>
</nlm-citation>
</ref>
<ref id="B22">
<label>22</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Wylie]]></surname>
<given-names><![CDATA[P. L]]></given-names>
</name>
<name>
<surname><![CDATA[Uchiyama]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Improved Gas Chromatographic Analysis of Organophosphorus Pesticides with Pulsed Splitless Injection]]></article-title>
<source><![CDATA[JAOAC Int]]></source>
<year>1996</year>
<volume>79</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>571-7</page-range></nlm-citation>
</ref>
<ref id="B23">
<label>23</label><nlm-citation citation-type="">
<collab>CAC/GL 41-1993</collab>
<source><![CDATA[Portion of commodities to which codex maximum residue limits apply and which is analyzed]]></source>
<year></year>
</nlm-citation>
</ref>
<ref id="B24">
<label>24</label><nlm-citation citation-type="">
<collab>European Standar EN 15662</collab>
<source><![CDATA[Foods of plant origin - Determination of pesticide residues using GC-MS and / or LC-MS / MS following acetonitrile extraction / partitioning and cleanup by dispersive SPE - QuEChERS-method European Committee for Stantarization]]></source>
<year>2008</year>
<page-range>1-83</page-range></nlm-citation>
</ref>
<ref id="B25">
<label>25</label><nlm-citation citation-type="">
<collab>SANTE/EU</collab>
<source><![CDATA[Method validation and quality control procedures for pesticide residues analysis in food and feed]]></source>
<year>2015</year>
</nlm-citation>
</ref>
<ref id="B26">
<label>26</label><nlm-citation citation-type="">
<collab>European Commission</collab>
<source><![CDATA[Deecision 202/657/EC, implementing Council Directive 96/ 23/EC concerning the performace of analytical methods and the interpretation of results]]></source>
<year></year>
</nlm-citation>
</ref>
<ref id="B27">
<label>27</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Lehotay]]></surname>
<given-names><![CDATA[S. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Ma&#353;tovská]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<name>
<surname><![CDATA[Lightfield]]></surname>
<given-names><![CDATA[A. R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Use of Buffering and Other Means to Improve Results of Problematic Pesticides in a Fast and Easy Method for Residue Analysis of Fruits and Vegetables]]></article-title>
<source><![CDATA[J. AOAC Int]]></source>
<year>2005</year>
<volume>88</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>615-29</page-range></nlm-citation>
</ref>
<ref id="B28">
<label>28</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mol]]></surname>
<given-names><![CDATA[H. G. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Tienstra]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Zomer]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Evaluation of gas chromatography - electron ionization - full scan high resolution Orbitrap mass spectrometry for pesticide residue analysis]]></article-title>
<source><![CDATA[Anal. Chim. Acta]]></source>
<year>2016</year>
<volume>935</volume>
<page-range>161-72</page-range></nlm-citation>
</ref>
<ref id="B29">
<label>29</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gómez-Ramos]]></surname>
<given-names><![CDATA[M M]]></given-names>
</name>
<name>
<surname><![CDATA[Ferrer]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Malato]]></surname>
<given-names><![CDATA[O]]></given-names>
</name>
<name>
<surname><![CDATA[Agüera]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Fernández-Alba]]></surname>
<given-names><![CDATA[A R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Liquid chromatography-high-resolution mass spectrometry for pesticide residue analysis in fruit and vegetables: screening and quantitative studies]]></article-title>
<source><![CDATA[J. Chromatogr. A]]></source>
<year>2013</year>
<volume>1287</volume>
<page-range>24-37</page-range></nlm-citation>
</ref>
<ref id="B30">
<label>30</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ross]]></surname>
<given-names><![CDATA[A . H.]]></given-names>
</name>
<name>
<surname><![CDATA[Van Munsteren]]></surname>
<given-names><![CDATA[A. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Nab]]></surname>
<given-names><![CDATA[F. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Tuinstra]]></surname>
<given-names><![CDATA[L. G. M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Th. Universal extraction/clean-up procedure for screening of pesticides by extraction with ethyl acetate and size exclusion chromatography]]></article-title>
<source><![CDATA[Anal. Chim. Acta]]></source>
<year>1987</year>
<volume>196</volume>
<page-range>95-102</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
