<?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>0187-6236</journal-id>
<journal-title><![CDATA[Atmósfera]]></journal-title>
<abbrev-journal-title><![CDATA[Atmósfera]]></abbrev-journal-title>
<issn>0187-6236</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Instituto de Ciencias de la Atmósfera y Cambio Climático]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0187-62362020000300269</article-id>
<article-id pub-id-type="doi">10.20937/atm.52646</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Potential sources and measured concentrations of VOCs in Balikesir ambient atmosphere]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Yalçin]]></surname>
<given-names><![CDATA[Efdal]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Tecer]]></surname>
<given-names><![CDATA[Lokman Hakan]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Yurdakul]]></surname>
<given-names><![CDATA[Sema]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Tuncel]]></surname>
<given-names><![CDATA[Gürdal]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Middle East Technical University Environmental Engineering Department ]]></institution>
<addr-line><![CDATA[Ankara ]]></addr-line>
<country>Turkey</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Namik Kemal University Corlu Faculty of Engineering Environmental Engineering Department]]></institution>
<addr-line><![CDATA[Tekirdag ]]></addr-line>
<country>Turkey</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Suleyman Demirel University Environmental Engineering Department ]]></institution>
<addr-line><![CDATA[Isparta ]]></addr-line>
<country>Turkey</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2020</year>
</pub-date>
<volume>33</volume>
<numero>3</numero>
<fpage>269</fpage>
<lpage>284</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0187-62362020000300269&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0187-62362020000300269&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0187-62362020000300269&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT The assessment of volatile organic compounds (VOCs) has become an important field of interest in atmospheric pollution. This study quantifies and characterizes the ambient levels and spatial distribution of VOCs in urban and rural areas of Balikesir city, Turkey. For these assessments, passive sampling of VOCs performed at approximately 50 locations in and around the city of Balikesir. Twenty-five VOCs were regularly monitored and analyzed with the GC-FID system. The sampling periods were carried out for seven-day periods during March and August 2010. In the study, mean &#8721;VOC concentrations were found to be as high 67 and 51 µg m-3 for the winter and summer seasons, respectively. Median concentrations of benzene, toluene, ethylbenzene, m,p-xylene and o-xylene were 2.6, 11, 1.30, 1.80 and 0.73 &#956;g m-3, respectively. Although there were some changes between concentrations of VOC groups between the summer and winter campaigns, differences were not dramatic. Winter-to-summer ratios of the target compounds ranged from 0.2 (1,2,4-trimethylbenzene) to 9 (hexane). Most of the target compounds have higher concentrations in winter. Only few VOCs, including n-propylbenzene, 1,2,4- trimethylbenzene, 1-undecene and 1,2,4- trichlorobenzene have higher concentrations in summer. Spatial distribution of VOCs demonstrated that the roads are hot spots for measured VOC concentrations. The drinking water treatment plant, industrial solvent emissions from pesticide and insecticide applications in agriculture, and emissions from traffic were the sources that contribute to total VOC load in the Balikesir atmosphere.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN La evaluación de compuestos orgánicos volátiles (COV) se ha convertido en un importante campo de interés en la contaminación atmosférica. Este estudio cuantifica y caracteriza los niveles ambientales y la distribución espacial de los COV en las zonas urbanas y rurales de la ciudad de Balikesir. Para estas evaluaciones, el muestreo pasivo de COV se realizó en aproximadamente 50 lugares en la ciudad de Balikesir y sus alrededores. Se monitorearon regularmente 25 COV, y las muestras se analizaron con el sistema GC-FID. Los muestreos se llevaron a cabo en periodos de siete días durante marzo y agosto de 2010. Se encontró que las concentraciones medias de &#8721;COV fueron de 67 y 51 µg m-3 en las temporadas de invierno y verano, respectivamente. Las concentraciones medias de benceno, tolueno, etilbenceno, m,p-xileno y o-xileno fueron de 2.6, 11, 1.30, 1.80 y 0.73 &#956;g m-3 , respectivamente. Aunque hubo algunos cambios en las concentraciones de grupos de COV entre las campańas de verano e invierno, las diferencias no fueron excesivas. Las proporciones de invierno a verano de los compuestos objetivo variaron de 0.2 (1,2,4 trimetilbenceno) a 9 (hexano). La mayoría de los compuestos objetivo tienen concentraciones más altas en invierno. Solo algunos COV, incluidos el n-propilbenceno, el 1,2,4-trimetilbenceno, el 1-undeceno y el 1,2,4-triclorobenceno tienen concentraciones más altas en verano. La distribución espacial de COV demostró que las carreteras son puntos críticos para las concentraciones de COV. Las fuentes que contribuyen a la carga total de VOC en la atmósfera de Balikesir son la planta de tratamiento de agua potable, las emisiones de solventes industriales de las aplicaciones de pesticidas e insecticidas en la agricultura, y las emisiones del tráfico.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Source apportionment]]></kwd>
<kwd lng="en"><![CDATA[VOCs]]></kwd>
<kwd lng="en"><![CDATA[PMF]]></kwd>
<kwd lng="en"><![CDATA[urban atmosphere]]></kwd>
</kwd-group>
</article-meta>
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