Classification of suspended particles in deposition samples and run-off water samples from a limestone cathedral |
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| Institution: | 1. School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Rd., 212013 Zhenjiang, Jiangsu, China;2. School of Food Science and Nutrition, the University of Leeds, Leeds LS2 9JT, United Kingdom;3. Hengshun Vinegar Industry Co., LTD, Zhenjiang, Jiangsu, China;1. School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, China;2. Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, 348 West XianJiahu Road, Changsha 410205, China;4. School of Science, RMIT University, Melbourne VIC 3001, Australia;1. Analytical Center, Federal Institute of Education, Science and Technology of Amazonas (IFAM), Manaus, Amazonas, Brazil;2. Laboratory of Nanostructured Polymers (NANOPOL), Federal University of Amazonas, Manaus, Amazonas, Brazil;3. Department of Food Technology, Federal University of Viçosa (UFV), Viçosa, Minas Gerais, Brazil |
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| Abstract: | In a study on the mechanism of the air-pollution induced deterioration of the limestone St. Rombouts cathedral in Mechelen, Belgium, automated electron-probe X-ray micro-analysis combined with multivariate analysis was used to characterize the suspension particles in run-off water and in local wet and dry deposition samples.Altogether about 10,000 individual particles were sized, analyzed and classified, according to their chemical composition. It was found that the run-off water samples were highly enriched in CaCO3 particles, resulting from the stone-erosion by overflowing rainwater, while the Si-rich group was the most abundant one in the deposition samples. Several other particle types were found. Ion chromatography analysis of the run-off water showed 200–1700mg l−1 of sulphate and 20–110mg l−1 of nitrate. |
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