<?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%">De Nicola, F</style></author><author><style face="normal" font="default" size="100%">Alfani, a</style></author><author><style face="normal" font="default" size="100%">Maisto, G</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Polycyclic aromatic hydrocarbon contamination in an urban area assessed by Quercus ilex leaves and soil</style></title><secondary-title><style face="normal" font="default" size="100%">Environmental Science and Pollution Research</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">carcinogenic pahs</style></keyword><keyword><style  face="normal" font="default" size="100%">Diagnostic ratios</style></keyword><keyword><style  face="normal" font="default" size="100%">Environmental matrices</style></keyword><keyword><style  face="normal" font="default" size="100%">Light and heavy PAHs</style></keyword><keyword><style  face="normal" font="default" size="100%">Naples urban area</style></keyword><keyword><style  face="normal" font="default" size="100%">PAH toxicity</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2014</style></year></dates><publisher><style face="normal" font="default" size="100%">Springer Berlin Heidelberg</style></publisher><volume><style face="normal" font="default" size="100%">21</style></volume><pages><style face="normal" font="default" size="100%">7616-7623</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">We investigated the PAH contamination of Naples urban area, densely populated and with high traffic flow, by analyses of environmental matrices: soil and Quercus ilex leaves. Being some PAHs demonstrated to have hazardous effects on human health, the accumulation of carcinogenic and toxic PAHs (expressed as B(a)Peq) was evaluated in the leaves and soil. The main sources of the PAHs were discrim- inated by the diagnostic ratios in the two matrices. The urban area appeared heavily contaminated by PAHs, showing in soil and leaves total PAH concentrations also fivefold higher than those from the remote area. The soil mainly accumulated heavy PAHs, whereas leaves the lightest ones.Median values of carcinogenic PAH concentrations were higher in soil (440 ng g−1 d.w.) and leaves (340 ng g−1 d.w.) fromthe urban than the remote area (60 and 70 ng g−1 d.w., respectively, for soil and leaves). Also, median B(a)Peq concentrations were higher both in soil and leaves from the urban (137 and 63 ng g−1 d.w., respectively) than those from the remote area (19 and 49 ng g−1 d.w., respectively).Different from the soils, the diagnostic ratios found for the leaves discerned PAH sources in the remote and urban areas, highlighting a great contribution of vehicular traffic emission as main PAHsource in the urban area. Responsible</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%">Alfani, a</style></author><author><style face="normal" font="default" size="100%">Nicola, F</style></author><author><style face="normal" font="default" size="100%">Maisto, G</style></author><author><style face="normal" font="default" size="100%">Prati, M</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Long-term PAH accumulation after bud break in L. leaves in a polluted environment</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 contamination</style></keyword><keyword><style  face="normal" font="default" size="100%">carcinogenic pahs</style></keyword><keyword><style  face="normal" font="default" size="100%">pah dynamics</style></keyword><keyword><style  face="normal" font="default" size="100%">pah leaf accumulation</style></keyword><keyword><style  face="normal" font="default" size="100%">polycyclic aromatic hydrocarbons</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2005</style></year></dates><volume><style face="normal" font="default" size="100%">39</style></volume><pages><style face="normal" font="default" size="100%">307-314</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The dynamics of polycyclic aromatic hydrocarbon (PAH) concentrations in the leaves of Quercus ilex L. for 16 months after bud break (May 2001–September 2002) were studied at a polluted site in the urban area of Naples by comparison to the dynamics at a control site in the Vesuvius National Park. Twenty-seven PAHs were extracted by sonication and quantiﬁed by GC-MS. Total PAH concentrations in the leaves sampled at the urban site showed a considerable increase from bud break, with the highest values during the winter (about 3-fold greater than the initial value) and a subsequent decrease, unlike the control site. The control site exhibited PAH concentrations one order of magnitude lower than the urban site. At the urban site, the medium molecular weight PAHs, amounting to 72% of the total, appear responsible for the temporal trend, while the low and high molecular weight PAHs (respectively, 10% and 18%) exhibited only narrow variations over time. At the control site, the low, medium and high molecular weight PAHs contributed similarly to the total concentrations (32%, 31% and 37%, respectively); the low molecular weight PAHs showed the widest temporal variations. Carcinogenic PAHs showed a dynamic at the urban site comparable to that shown by the total PAHs. At the control site dibenzo(a,h)anthracene exhibited concentrations higher than at the urban site</style></abstract></record></records></xml>