Suchergebnisse
Filter
13 Ergebnisse
Sortierung:
Evaluation of black crust formation and soiling process on historical buildings from the Bilbao metropolitan area (north of Spain) using SEM-EDS and Raman microscopy
In: Environmental science and pollution research: ESPR, Band 24, Heft 10, S. 9468-9480
ISSN: 1614-7499
Spectroscopic analysis used to uncover the original paint colour of the Helsinki Government Palace tower clock faces
In: http://www.heritagesciencejournal.com/content/4/1/36
Abstract The paint stratigraphy of the two clock faces from the tower clock of the Government Palace in Helsinki (Finland) was analysed in order to determine their original colour before restoration works. Paint cross-section samples from both clock faces were analysed by confocal Raman microscopy and scanning electron microscopy coupled to an energy dispersive X-ray spectrometer (SEM–EDS). The results revealed the complex superimposition of paint layers applied over the original black colour. FTIR/ATR analyses proved that the original paint was prepared with linseed oil-resin media. Most likely not all of the different layer colours were visible. Some of the layers were likely to have been a primer or for rust protection.
BASE
PM10 spatial distribution and metals speciation study in the Bilbao metropolitan area during the 2017–2018 period
Speciation of respirable particles is becoming increasingly important from an epidemiological and analytical point of view to determine the potential effects of air pollution on human health. For this reason, current laws and analytical sampling methods focus on particle size, as it turns out to be the main factor for the greater or lesser penetration into the airways. In this sense, particles of less than 10 μm in diameter (<10 μm), referred to as PM10, are the particles that have a higher capacity for access to the respiratory tract and, therefore, more significant effect on them. In this sense, one of the most important factors that have a key role in the PM10 atmospheric pollution effect is the dispersion effect with the direct influence of natural effects such as wind, rain, topography apart from others. In this work, PM10 data extracted from the Basque Government environmental stations (19 sampling points) in the Biscay province (Basque Country, north of Spain) were combined with the results obtained from the use of self-made passive samplers (SMPS) in the same sampling points areas and subsequently, the sample analysis with a non-invasive elemental technique (Scanning Electron Microscope coupled to Energy Dispersive X-ray Spectrometry) was carried out. Thanks to this methodology, it was possible to determine a wide variety of metals in PM10 such as Al, Fe, Cr, Ni, Pb, Zn, Ti, etc. Most of them present as oxides and others as part of natural aggregations such as quartz, aluminosilicates, phosphates etc.
BASE
Spectroscopic analysis used to uncover the original paint colour of the Helsinki Government Palace tower clock faces
The paint stratigraphy of the two clock faces from the tower clock of the Government Palace in Helsinki (Finland) was analysed in order to determine their original colour before restoration works. Paint cross-section samples from both clock faces were analysed by confocal Raman microscopy and scanning electron microscopy coupled to an energy dispersive X-ray spectrometer (SEM–EDS). The results revealed the complex superimposition of paint layers applied over the original black colour. FTIR/ATR analyses proved that the original paint was prepared with linseed oil-resin media. Most likely not all of the different layer colours were visible. Some of the layers were likely to have been a primer or for rust protection. ; peerReviewed
BASE
Spectroscopic analysis used to uncover the original paint colour of the Helsinki Government Palace tower clock faces
The paint stratigraphy of the two clock faces from the tower clock of the Government Palace in Helsinki (Finland) was analysed in order to determine their original colour before restoration works. Paint cross-section samples from both clock faces were analysed by confocal Raman microscopy and scanning electron microscopy coupled to an energy dispersive X-ray spectrometer (SEM-EDS). The results revealed the complex superimposition of paint layers applied over the original black colour. FTIR/ATR analyses proved that the original paint was prepared with linseed oil-resin media. Most likely not all of the different layer colours were visible. Some of the layers were likely to have been a primer or for rust protection. ; Peer reviewed
BASE
Combination of in situ spectroscopy and chemometric techniques to discriminate different types of Roman bricks and the influence of microclimate environment
In: Environmental science and pollution research: ESPR, Band 25, Heft 7, S. 6285-6299
ISSN: 1614-7499
SSRN
Multi-analytical methodology to diagnose the environmental impact suffered by building materials in coastal areas
In: Environmental science and pollution research: ESPR, Band 25, Heft 5, S. 4371-4386
ISSN: 1614-7499
Biodeterioration of Pompeian mural paintings: fungal colonization favoured by the presence of volcanic material residues
In: Environmental science and pollution research: ESPR, Band 24, Heft 24, S. 19599-19608
ISSN: 1614-7499
Are children playgrounds safe play areas? Inorganic analysis and lead isotope ratios for contamination assessment in recreational (Brazilian) parks
In: Environmental science and pollution research: ESPR, Band 24, Heft 31, S. 24333-24345
ISSN: 1614-7499
Elucidation of the Chemical Role of the Pyroclastic Materials on theState of Conservation of Mural Paintings from Pompeii
The research leading to these results has received fundingfrom "la Caixa" Foundation (Silvia Pérez-Diez, ID100010434, Fellowship code LCF/BQ/ES18/11670017). Thiswork has been supported by the projects MADyLIN (Min-istry of Economy, Industry and Competitiveness from Spain,Grant No.BIA2017-87063-P) funded by the Spanish Agency for Research AEI (MINECO-FEDER/UE), MINECO-17-CTQ2016-77887-C2-1-R and GRUPIN IDI/2018/000186,funded by Government of the Principality of Asturias.
BASE
Metals and metalloids in high-altitude Pyrenean lakes: sources and distribution in pre-industrial and modern sediments
In: Environmental science and pollution research: ESPR, Band 30, Heft 37, S. 87561-87574
ISSN: 1614-7499
AbstractHigh-altitude Pyrenean lakes are ecosystems far from local pollution sources, and thus they are particularly sensitive to the atmospheric deposition of metals and metalloids. This study aims to quantify the effect of human activity in 18 lakes located in both side of the France–Spain frontier. Sediment cores were collected in summer 2013, sampled at a 1cm resolution and the concentration of 24 elements was measured by ICP-MS. Statistic and chemometric analysis of the results highlights the influence of the geographical position and lithogenic features of each lake basin on trapping pollutants. More than the 80% of the lakes showed values of enrichment factor (EF) above 2 for at least one of the elements investigated in at least one core interval, which corroborates the existence of historical anthropogenic inputs of elements in the studied area. The results demonstrate the natural origin of As and Ti in Pyrenees, together with the significant anthropogenic inputs of Cd, Pb, Sb and Sn from ancient times. The data set points mining activities as the main historical source of pollution and illustrate the large impact of the industrial revolution. The regional variability could reflect also differential long-range transport, followed by dry or wet deposition.