Release of nitric oxide from building stones into the atmosphere |
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| Institution: | 1. Universität Konstanz, Fakultät für Biologie, P.O. Box 5560, D-7750 Konstanz, F.R.G.;2. Fraunhofer Institut für Atmosphärische Umweltforschung, Kreuzeckbahnstr. 19, D-8100 Garmisch-Partenkirchen, F.R.G.;3. Universität Hamburg, Institut für Allgemeine Botanik, Ohnhorststr. 18, D-2000 Hamburg 52, F.R.G.;1. School of Resource and Environmental Sciences, Wuhan University, Wuhan, 430079, Hubei, China;2. College of Urban and Environmental, Peking University, Beijing, 100871, China;3. Department of Sociology, King’s College, University of Aberdeen, UK;4. College of Resource and Environmental Sciences, China Agricultural University, Beijing, 100193, China;1. Algal Biotechnology Group, Research Center for Natural Resources, Health and The Environment (RENSMA-CIDERTA), Faculty of Sciences, University of Huelva, 21007 Huelva, Spain;2. Museo Nacional de Ciencias Naturales, CSIC, 28006 Madrid, Spain;3. Department of Plant Biochemistry and Molecular Biology, Faculty of Chemistry, University of Seville, 41012 Seville, Spain;1. College of Marine Life Sciences, Ocean University of China, Yushan Road, No. 5, Qingdao, China;2. Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, 266003, China;1. Department of Analytical Chemistry, Faculty of Pharmacy, University of Hacettepe Ankara, Turkey;2. Department of Analytical Chemistry, Faculty of Gulhane Pharmacy, University of Health Sciences, Ankara, Turkey;3. Department of Pharmacognosy, Faculty of Pharmacy, Afyonkarahisar Health Sciences University, Afyonkarahisar, Turkey;4. Department of Pharmacognosy, Faculty of Pharmacy, University of Hacettepe, Ankara, Turkey;5. Bioanalytic and Omics Laboratory, Faculty of Pharmacy, University of Hacettepe, Ankara, Turkey |
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| Abstract: | Stone material from the corroding surface of buildings generally released nitric oxide with rates of 0.42–4.2 ng NON h−1 g−1 d.w. despite their large range of moisture, pH and content of ammonium, nitrite and nitrate. The net release rates of NO were independent of the NO mixing ratio of the atmosphere up to 1 ppmv NO. Whereas NO2 was taken up by all stones tested, uptake of NO was only observed in one out of five types of stone. NO release rates were highest at the stone surface and rapidly decreased in depth lower than 1 cm. NO release persisted for up to >3 months after the stone sample was removed from the building. NO was mainly produced during the biogenic oxidation of ammonium to nitrate at the stone surface which was probably due to endolithic nitrifying bacteria. Chemical decomposition of nitrite to NO and NO2 was only observed under acidic conditions. |
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