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251.
Alessandra Colombo Giuseppe Cappelletti Silvia Ardizzone Iolanda Biraghi Claudia L. Bianchi Daniela Meroni Carlo Pirola Francesca Spadavecchia 《Environmental Chemistry Letters》2012,10(1):55-60
Bisphenol A is an endocrine disruptor. Complete mineralization of bisphenol A is therefore a primary environmental issue.
Here, the combination of ozonation and photocatalysis by TiO2 is proposed for the degradation and final mineralization of bisphenol A. TiO2 films deposited onto two sides of an Al lamina show good stability and high surface roughness. We used a specific experimental
setup employing two facing ultraviolet lamps and TiO2 layers, together with an ozone flux. High-performance liquid chromatography–mass spectrometry determinations on bisphenol
A solutions sampled at different reaction times and Fourier Transform Infrared analyses of the oxide at the end of the reaction
were performed to study the reaction intermediates and the overall degradation mechanism. Our results show that pollutant
mineralization achieved with the combined method is far higher, of 55% in the case of 0.3 mM bisphenol A, than those obtained
by individual treatments such as photolysis (<3%), ozonation (6%), photocatalysis (6%), and by other combined processes: photolytic
ozonation (13%) and catalytic ozonation (15%). This finding is explained by the occurrence of highly synergistic effects. 相似文献
252.
253.
This paper studies the reaction products of alpha-pinene, beta-pinene, sabinene, 3-carene and limonene with OH radicals and of alpha-pinene with ozone using FT-IR spectroscopy for measuring gas phase products and HPLC-MS-MS to measure products in the aerosol phase. These techniques were used to investigate the secondary organic aerosol (SOA) formation from the terpenes. The gas phase reaction products were all quantified using reference compounds. At low terpene concentrations (0.9-2.1 ppm), the molar yields of gas phase reaction products were: HCHO 16-92%, HCOOH 10-54% (OH source: H2O2, 6-25 ppm); HCHO 127-148%, HCOOH 4-6% (OH source: CH3ONO, 5-8 ppm). At high terpene concentrations (4.1-13.2 ppm) the results were: HCHO 9-27%, HCOOH 15-23%, CH3(CO)CH3 0-14%, CH3COOH 0-5%, nopinone 24% (only from beta-pinene oxidation), limona ketone 61% (only from limonene oxidation), pinonaldehyde was identified during alpha-pinene degradation (OH source H2O2, 23-30 ppm); HCHO 76-183%, HCOOH 12-15%, CH3(CO)CH3 0-12%, nopinone 17% (from beta-pinene oxidation), limona ketone 48% (from limonene oxidation), pinonaldehyde was identified during alpha-pinene degradation (OH source CH3ONO, 14-16 ppm). Pinic acid, pinonic acid, limonic acid, limoninic acid, 3-caric acid, 3-caronic acid and sabinic acid were identified in the aerosol phase. On the basis of these results, we propose a formation mechanism for pinonic and pinic acid in the aerosol phase explaining how degradation products could influence SOA formation and growth in the troposphere. 相似文献
254.
Serrani Dominique Ajmone-Marsan Franco Corti Giuseppe Cocco Stefania Cardelli Valeria Adamo Paola 《Environmental geochemistry and health》2022,44(10):3425-3449
Environmental Geochemistry and Health - Urban soils are often mixed with extraneous materials and show a high spatial variability that determine great differences from their agricultural or natural... 相似文献
255.
Maria?Michela?DicksonEmail authorView authors OrcID profile Diego?Giuliani Giuseppe?Espa Marco?Bee Emanuele?Taufer Flavio?Santi 《Environmental and Ecological Statistics》2018,25(1):155-169
The recent increased availability of information about the micro-geographic positions of population units in environmental surveys has led to important developments in spatial sampling methodologies and, as a result, has improved the estimation accuracy. In real data, however, information about the location of units is often affected by inaccuracy about their exact spatial positions, and these non-sampling errors can affect the estimation procedure. This paper aims to investigate the effects of positional errors on total estimation through a Monte-Carlo simulation study based on real populations of trees. Starting from perfect positioning, we examine two typical types of coarsening that frequently impact two different species of trees. The simulation results show that the exploitation of spatial information to estimate population totals continues to be relevant in the context of environmental surveys, even in the presence of inaccuracies. 相似文献
256.
Paola Di Leo Massimo Bavusi Giuseppe Corrado Maria Danese Tonia Giammatteo Dario Gioia Marcello Schiattarella 《Journal of Coastal Conservation》2018,22(5):865-877
In the ancient territory of the Greek settlement of Metaponto and its Chora (Ionian sector of Basilicata, southern Italy) geomorphological mapping, GIS-supported statistics, and landform topographic features were investigated and combined to extract settlement rules and site dynamics. Analyses of environmental dynamics as well as of spatial and temporal settlement evolution were carried through an integrated approach that, starting from a detailed geomorphological analysis, tried to extract the spatial relationships between archaeological site locations and landform/landscape features. Spatial analysis was used to investigate the relationships between environmental parameters and archaeological sites. The advantages to develop a predictive model using Archeological Spatial Evaluation (ASE) analysis lay in the possibility to deeply study the relationships between man and the environment. In the present study, the analysis was carried out in a pioneering way in the ~400 km2 Metaponto territory in order to robustly validate - in the aftermath data - human and territorial dynamics. A model describing interactions between sites and parameters such as elevation, slope, aspect, landforms, land use, and distances from rivers was constructed. Sensibility maps were produced, which will help archaeologists to know how many and which are the parameters increasing the probability to find new archaeological sites as well as how the main geomorphological features of the study area, contextualized within the most likely paleoclimate scenario, affect ancient site arrangement though time. The preferential occupation of mid-altitude marine terraces, and the consequence spreading of agriculture on these territories, is likely due to the existence of well-developed soil profiles on them. Clearly colonists recognized that on these landform units there were the better conditions for the development of massive agricultural practices: since the SP age (4,1 to 2,0 Kyr B.P.) the settlers expands inland looking for most fertile territories as well as for areas sufficiently protected (being far away from the coast). The increase in farmhouses on the top of marine terraces from the FC up to EC-EE periods and the modifications of settlement distribution (gradual abandonment of alluvial) in the Metaponto area is likely related to the acceleration of alluvial processes. The progressive decrease of human occupation during the Hellenistic up to the Roman Age is clearly consequence of the Roman conquest. However, a role played by the increase in flooding occurrence in the coastal plain/floodplains of the main rivers in triggering the abandonment of these territories and marking the beginning of the decadent phases should not be neglected. Productive areas (locally associated to farmhouses) are preferential set along the fluvial incisions (sometime associated to farmhouses), thus implying that productive area setting is strongly linked to the presence of rivers, and of their lower rank tributaries, both as an intrinsic need of manufacturing and to facilitate the spreading of products. From the Classical to the Hellenistic Age until the Roman Age, Necropolis are spread in the entire area, from marine terraces to alluvial plain. On the other hand, Sacred areas - which appearance is recorded starting from the Colony Foundation Age - exhibits a settlement continuity in the study area starting from this time up to the entire Roman period, and the sacred areas setting is strictly associated to the category of Settlement. 相似文献
257.
D’Amico Sebastiano Comite Valeria Paladini Giuseppe Ricca Michela Colica Emanuele Galone Luciano Guido Sante Mantella Giuseppe Crupi Vincenza Majolino Domenico Fermo Paola La Russa Mauro Francesco Randazzo Luciana Venuti Valentina 《Environmental science and pollution research international》2022,29(20):29478-29497
Environmental Science and Pollution Research - In this study, a multimethodological analysis involving optical and physical/chemical diagnostic techniques and 3D photogrammetric survey was... 相似文献
258.
Picone Marco Distefano Gabriele Giuseppe Marchetto Davide Russo Martina Volpi Ghirardini Annamaria 《Environmental science and pollution research international》2022,29(21):31002-31024
Environmental Science and Pollution Research - Laboratory testing with spiked sediments with organic contaminants is a valuable tool for ecotoxicologists to study specific processes such as effects... 相似文献