Assessment of air pollutant sources in the deposit on monuments by multivariate analysis.

A proper recognition of the pollutant sources in atmospheric deposit is a key problem for any action aiming at reducing their emission, being this an important issue with implications both on human health safeguard and on the cultural heritage conservation in urban sites. This work presents the results of a statistical approach application for the identification of pollutant sources in deposits and damage layers on monuments located in different European sites: Santa Maria del Fiore, Florence (Italy), Cologne Cathedral, Cologne (Germany), Ancient ramparts, Salè (Morocco), National Museum, Cracow (Poland) and National Gallery, Oslo (Norway). For this aim, the surface damage layers on monuments and historical buildings of the selected sites were collected and analyzed, in terms of ionic and elemental composition, through application of ion chromatography and induced coupled plasma-optical emission spectroscopy. The achieved results were processed by multivariate analyses such as correlation matrix and principal component analysis in order to identify the possible origin of pollutants affecting the state of conservation of the monuments. This allowed us to assume that in all case studies the traffic emission is the main pollutant source. In the case of Ancient ramparts, Salè (Morocco), and National Gallery, Oslo (Norway), the surfaces are also under influence of marine aerosols. Moreover, concerning the Cologne Cathedral, the strong impact of the pollutants emitted by railway station was also revealed.

[1]  Jan Jehlička,et al.  Principal component analysis as a tool to indicate the origin of potentially toxic elements in soils , 2005 .

[2]  A. Casini,et al.  Multispectral Imaging System for the Mapping of Pigments in Works of Art by use of Principal-Component Analysis. , 1998, Applied optics.

[3]  E. Steinnes,et al.  Atmospheric trace element deposition: principal component analysis of ICP-MS data from moss samples. , 1995, Environmental pollution.

[4]  Miguel Gómez-Heras,et al.  Understanding the decay of stone-built cultural heritage , 2008 .

[5]  S. Siegesmund,et al.  Urban and rural limestone weathering; the contribution of dust to black crust formation , 2011 .

[6]  A. Agarwal,et al.  Characterization of exhaust particulates from diesel engine , 2005 .

[7]  Mauro Matteini,et al.  Multiariate characterization, using the SIMCA method, of mortars from two frescoes in Chiaravalle Abbey , 1995 .

[8]  L. Bityukova.  Air Pollution Effect on the Decay of Carbonate Building Stones in Old Town of Tallinn , 2006 .

[9]  Fernando-Juan García-Diego,et al.  Microclimate monitoring by multivariate statistical control: The renaissance frescoes of the Cathedral of Valencia (Spain) , 2010 .

[10]  Terry J. Reedy,et al.  STATISTICAL ANALYSIS IN CONSERVATION SCIENCE , 1994 .

[11]  J. Tu,et al.  Multivariate analysis of trace element concentrations in atmospheric deposition in the Yangtze River Delta, East China. , 2009 .

[12]  Giuseppe Musumarra,et al.  Chemometrics and cultural heritage , 1998 .

[13]  Cristina Sabbioni,et al.  Pollution impact on the ancient ramparts of the Moroccan city Salé , 2013 .

[14]  N. Peters,et al.  Use of multivariate analysis for determining sources of solutes found in wet atmospheric deposition in the United States , 1989 .

[15]  Maria L. Rizzo,et al.  Measuring and testing dependence by correlation of distances , 2007, 0803.4101.

[16]  Paul Geladi,et al.  Principal Component Analysis , 1987, Comprehensive Chemometrics.

[17]  Angel Lopez-Soler,et al.  Mineral composition of atmospheric particulates around a large coal-fired power station , 1996 .

[18]  Perng-Jy Tsai,et al.  Emissions of fuel metals content from a diesel vehicle engine , 2003 .

[19]  J. Schauer,et al.  Emissions of Particulate Trace Elements, Metals and Organic Species from Gasoline, Diesel, and Biodiesel Passenger Vehicles and Their Relation to Oxidative Potential , 2010 .

[20]  Antonia Moropoulou,et al.  Principal Component Analysis in monument conservation: Three application examples , 2009 .

[21]  R. H. Myers,et al.  Probability and Statistics for Engineers and Scientists , 1978 .

[22]  Luciano Morselli,et al.  Diagnosis of surface damage induced by air pollution on 20th-century concrete buildings , 2011 .

[23]  S. A. Ruffolo,et al.  Application of spectrometric analysis to the identification of pollution sources causing cultural heritage damage , 2013, Environmental Science and Pollution Research.

[24]  P. Artaxo,et al.  Aerosol emissions by tropical forest and savanna biomass burning: Characteristic trace elements and fluxes , 1995 .

[25]  K. Friese,et al.  Trace elements : their distribution and effects in the environment , 2000 .

[26]  G. Weckwerth,et al.  Verification of traffic emitted aerosol components in the ambient air of Cologne (Germany) , 2001 .

[27]  E. Steinnes,et al.  Atmospheric Deposition of Heavy Metals in Thrace Studied by Analysis of Moss (Hypnum cupressiforme) , 2005, Bulletin of environmental contamination and toxicology.

[28]  M. Colombini,et al.  Characterisation of proteinaceous binders and drying oils in wall painting samples by gas chromatography–mass spectrometry , 1999 .

[29]  Riccardo Leardi,et al.  Principal component analysis of colour measurements of patinas and coating systems for outdoor bronze monuments , 2009 .

[30]  S. Eisenreich,et al.  Characterization of atmospheric trace elements on PM2.5 particulate matter over the New York-New Jersey harbor estuary , 2002 .

[31]  C. Sabbioni,et al.  Atmospheric aerosol monitoring as a strategy for the preventive conservation of urban monumental heritage: The Florence Baptistery , 2011 .

[32]  Costas A. Varotsos,et al.  The enhanced deterioration of the cultural heritage monuments due to air pollution , 2009, Environmental science and pollution research international.

[33]  S. Dragović,et al.  Analysis of mosses and topsoils for detecting sources of heavy metal pollution: multivariate and enrichment factor analysis , 2009, Environmental monitoring and assessment.

[34]  Roy M. Harrison,et al.  Identification of brake wear particles and derivation of a quantitative tracer for brake dust at a major road , 2010 .

[35]  Cristina Sabbioni,et al.  Quantitative data on carbon fractions in interpretation of black crusts and soiling on European built heritage , 2005 .

[36]  Francesca Tittarelli,et al.  Atmospheric deterioration of cement plaster in a building exposed to a urban environment , 2008 .

[37]  Y. Tasdemir,et al.  Assessment of trace element concentrations and their estimated dry deposition fluxes in an urban atmosphere , 2006 .