<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Villanueva, Florentina</style></author><author><style face="normal" font="default" size="100%">Tapia, Araceli</style></author><author><style face="normal" font="default" size="100%">Notario, Alberto</style></author><author><style face="normal" font="default" size="100%">Albaladejo, José</style></author><author><style face="normal" font="default" size="100%">Martínez, Ernesto</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Ambient levels and temporal trends of VOCs, including carbonyl compounds, and ozone at Cabañeros National Park border, Spain</style></title><secondary-title><style face="normal" font="default" size="100%">Atmospheric Environment</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">air quality</style></keyword><keyword><style  face="normal" font="default" size="100%">aldehydes</style></keyword><keyword><style  face="normal" font="default" size="100%">Cabañeros National Park</style></keyword><keyword><style  face="normal" font="default" size="100%">Ozone</style></keyword><keyword><style  face="normal" font="default" size="100%">passive samplers</style></keyword><keyword><style  face="normal" font="default" size="100%">VOCs</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2014</style></year></dates><volume><style face="normal" font="default" size="100%">85</style></volume><pages><style face="normal" font="default" size="100%">256-265</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Concentration levels of 15 carbonyls, 17 VOCs and ozone were studied at Cabañeros National Park border, Spain, in an area mainly constituted by holm oaks (Quercus ilex) and cork oaks (Quercus suber), along with scrubland formations such as rock-rose and heather. The compounds were collected by means of diffusive samplers from August–November 2010 and February–August 2011. Carbonyl compounds, VOCs and O3 were analysed by HPLC with diode array UV–Vis detector, GC–FID and by UV–visible spectrophotometry, respectively. The most abundant carbonyls were hexanal, acetone–acrolein, formaldehyde and acetaldehyde. Seasonal variation was apparent with maximum values observed in summer months. Total carbonyl concentrations ranged from 2.8 to 19.7 μg m−3. Most VOCs studied (using chemically desorbable cartridges) were either not detected or were below their detection limits, however, a parallel sampling using thermally desorbable cartridges, from May 22 to June 19, revealed the presence of much more VOCs, identified using GC–MS. O3 concentration ranged from 27.2 to 90.5 μg m−3, reaching the maximum monthly mean concentration in March (84.4 μg m−3). The analysis of back trajectories indicates the transport of polluted air masses from remote areas, mainly from the Mediterranean basin that should contribute to the high levels of ozone observed.</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Alessio, M</style></author><author><style face="normal" font="default" size="100%">Anselmi, S</style></author><author><style face="normal" font="default" size="100%">Conforto, L</style></author><author><style face="normal" font="default" size="100%">Improta, S</style></author><author><style face="normal" font="default" size="100%">Manes, F</style></author><author><style face="normal" font="default" size="100%">Manfra, L</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Radiocarbon as a biomarker of urban pollution in leaves of evergreen species sampled in Rome and in rural areas (Lazio—Central Italy)</style></title><secondary-title><style face="normal" font="default" size="100%">Atmospheric Environment</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">air quality</style></keyword><keyword><style  face="normal" font="default" size="100%">carbon isotopes</style></keyword><keyword><style  face="normal" font="default" size="100%">co 2</style></keyword><keyword><style  face="normal" font="default" size="100%">lead</style></keyword><keyword><style  face="normal" font="default" size="100%">photosynthesis</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2002</style></year></dates><volume><style face="normal" font="default" size="100%">36</style></volume><pages><style face="normal" font="default" size="100%">5405-5416</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The aim of the present study is the use of 14 C, sampled in leaves of evergreen species, as a natural geochemical marker to estimate the contribution of artiﬁcial sources (heating plants, vehicles, etc.) to the complex of atmospheric gases in an urban environment. Leaves were chosen due to sampling easiness and their reliability: in particular the evergreen species, being exposed all the year round to pollutants are especially indicated for bioindication and biomonitoring studies. The response to atmospheric pollutants has been studied of two plant species (Quercus ilex L., Pinus pinea L.) measuring isotopic ( 14 r, d 13 C), chemical (Pb concentration) and ecophysiological (gaseous exchange and leaf ﬂuorescence of chlorophyll a) parameters. Leaves of holm-oaks and stone pine needles collected over a 3-year time span in an urban park in Rome (Villa Ada) and in reference localities outside the city on the Tyrrhenian coast and in the preAppennine area have been analysed. In Villa Ada measurements were carried out along a transect from the road bordering the park towards the interior; all the parameters, together in agreement, showed a decreasing pollution gradient towards the inner park. It was possible to estimate a 5.570.3% contribution of CO2 from fossil fuels close to the road, decreasing to 1.770.3% at o300 m from it towards the inner park. The isotopic analyses conducted on stone pines and holm-oaks show that 14 C provides indications on the degree of pollution from fossil fuels, while d 13 C appears to be conditioned mainly by the interspeciﬁc difference, and also by many other environmental factors that affect the plant functionality. Results conﬁrmed that radiocarbon is a useful tool in environmental studies, allowing to quantify the contributions of CO2 of anthropic origin: this parameter, together with appropriate isotopic, chemicaland ecophysiological analyses, could provide a good indication of the ‘‘air quality’’ in urban and rural contexts.</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Alessio, M.</style></author><author><style face="normal" font="default" size="100%">Anselmi, S.</style></author><author><style face="normal" font="default" size="100%">Conforto, L.</style></author><author><style face="normal" font="default" size="100%">Improta, S.</style></author><author><style face="normal" font="default" size="100%">Manes, F.</style></author><author><style face="normal" font="default" size="100%">Manfra, L.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Radiocarbon as a biomarker of urban pollution in leaves of evergreen species sampled in Rome and in rural areas (Lazio—Central Italy)</style></title><secondary-title><style face="normal" font="default" size="100%">Atmospheric Environment</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">air quality</style></keyword><keyword><style  face="normal" font="default" size="100%">carbon isotopes</style></keyword><keyword><style  face="normal" font="default" size="100%">co 2</style></keyword><keyword><style  face="normal" font="default" size="100%">lead</style></keyword><keyword><style  face="normal" font="default" size="100%">photosynthesis</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2002</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2002///</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://linkinghub.elsevier.com/retrieve/pii/S1352231002004090</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">36</style></volume><pages><style face="normal" font="default" size="100%">5405 - 5416</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The aim of the present study is the use of 14 C, sampled in leaves of evergreen species, as a natural geochemical marker to estimate the contribution of artiﬁcial sources (heating plants, vehicles, etc.) to the complex of atmospheric gases in an urban environment. Leaves were chosen due to sampling easiness and their reliability: in particular the evergreen species, being exposed all the year round to pollutants are especially indicated for bioindication and biomonitoring studies. The response to atmospheric pollutants has been studied of two plant species (Quercus ilex L., Pinus pinea L.) measuring isotopic ( 14 r, d 13 C), chemical (Pb concentration) and ecophysiological (gaseous exchange and leaf ﬂuorescence of chlorophyll a) parameters. Leaves of holm-oaks and stone pine needles collected over a 3-year time span in an urban park in Rome (Villa Ada) and in reference localities outside the city on the Tyrrhenian coast and in the preAppennine area have been analysed. In Villa Ada measurements were carried out along a transect from the road bordering the park towards the interior; all the parameters, together in agreement, showed a decreasing pollution gradient towards the inner park. It was possible to estimate a 5.570.3% contribution of CO2 from fossil fuels close to the road, decreasing to 1.770.3% at o300 m from it towards the inner park. The isotopic analyses conducted on stone pines and holm-oaks show that 14 C provides indications on the degree of pollution from fossil fuels, while d 13 C appears to be conditioned mainly by the interspeciﬁc difference, and also by many other environmental factors that affect the plant functionality. Results conﬁrmed that radiocarbon is a useful tool in environmental studies, allowing to quantify the contributions of CO2 of anthropic origin: this parameter, together with appropriate isotopic, chemicaland ecophysiological analyses, could provide a good indication of the ‘‘air quality’’ in urban and rural contexts.</style></abstract><issue><style face="normal" font="default" size="100%">34</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Iannotti, Orietta</style></author><author><style face="normal" font="default" size="100%">Mincigrucci, Gianfranco</style></author><author><style face="normal" font="default" size="100%">Bricchi, Emma</style></author><author><style face="normal" font="default" size="100%">Frenguelli, Giuseppe</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Pollen viability as a bio-indicator of air quality</style></title><secondary-title><style face="normal" font="default" size="100%">Aerobiologia</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">air quality</style></keyword><keyword><style  face="normal" font="default" size="100%">bio-indicator</style></keyword><keyword><style  face="normal" font="default" size="100%">perugia</style></keyword><keyword><style  face="normal" font="default" size="100%">pollen</style></keyword><keyword><style  face="normal" font="default" size="100%">viability</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2000</style></year></dates><volume><style face="normal" font="default" size="100%">16</style></volume><pages><style face="normal" font="default" size="100%">361-365</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Many air pollutants cause plant deterioration. In this study pollen viability was used as bio-indicator of air quality. The study was carried out in the city of Perugia where road trafﬁc is the most important cause of air pollution. Three areas, with different intensity of road trafﬁc (very high, medium and absent) but all characterized by the presence of the same plant species, were selected. Eight species were studied: Hedera helix L., Convolvulus sepium L., Cynodon dactylon (L.) Pers., Quercus ilex L., Dactylis glomerata L., Parietaria diffusa M. et K., Daucus carota L. and Tilia cordata Miller. The pollen of these species was treated with TTC (2, 3, 5 Tryphenil-Tetrazolium-Chloride) staining solution and viability was then estimated by light microscopy. The results showed that the pollen viability was inversely proportioned with pollution. The highest difference in pollen viability between the areas was registered in Tilia cordata. Quercus ilex instead showed that there was no difference in pollen viability between the three different areas. Parietaria diffusa showed a particular behaviour; the highest pollen viability percentage was in polluted areas. The statistical analysis (ANOVA) showed that the main source of variability of the pollen viability depends on the plant but also the site and the interaction between plant and site were very important with a high signiﬁcant level (p &lt; 0.0001).</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Anselmi, S</style></author><author><style face="normal" font="default" size="100%">Giannini, M A</style></author><author><style face="normal" font="default" size="100%">Allegrini, I</style></author><author><style face="normal" font="default" size="100%">Manes, F</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Urban Green and Atmospheric Pollution: A Biomonitoring Study on Leaves of Quercus Ilex L.</style></title><secondary-title><style face="normal" font="default" size="100%">Giornale botanico italiano</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">air quality</style></keyword><keyword><style  face="normal" font="default" size="100%">atmospheric pollution</style></keyword><keyword><style  face="normal" font="default" size="100%">leaf functional conditions</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus ilex (PG)</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1996</style></year></dates><publisher><style face="normal" font="default" size="100%">Taylor &amp; Francis</style></publisher><volume><style face="normal" font="default" size="100%">130</style></volume><pages><style face="normal" font="default" size="100%">506</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><notes><style face="normal" font="default" size="100%">doi: 10.1080/11263509609439723</style></notes><research-notes><style face="normal" font="default" size="100%">doi: 10.1080/11263509609439723</style></research-notes></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Anselmi, S.</style></author><author><style face="normal" font="default" size="100%">Giannini, M. A.</style></author><author><style face="normal" font="default" size="100%">Allegrini, I.</style></author><author><style face="normal" font="default" size="100%">Manes, F.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Urban Green and Atmospheric Pollution: A Biomonitoring Study on Leaves of Quercus Ilex L.</style></title><secondary-title><style face="normal" font="default" size="100%">Giornale botanico italiano</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">air quality</style></keyword><keyword><style  face="normal" font="default" size="100%">atmospheric pollution</style></keyword><keyword><style  face="normal" font="default" size="100%">leaf functional conditions</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus ilex (PG)</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1996</style></year><pub-dates><date><style  face="normal" font="default" size="100%">1996///</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://dx.doi.org/10.1080/11263509609439723</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">130</style></volume><language><style face="normal" font="default" size="100%">eng</style></language><issue><style face="normal" font="default" size="100%">1</style></issue><notes><style face="normal" font="default" size="100%">doi: 10.1080/11263509609439723doi: 10.1080/11263509609439723The following values have no corresponding Zotero field:&lt;br/&gt;publisher: Taylor &amp; Francis</style></notes></record></records></xml>