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Tytuł:
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Alteration of yellow traffic paint in simulated environmental and biological fluids.
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Autorzy:
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O'Shea MJ; Department of Earth and Environmental Science, University of Pennsylvania, Philadelphia, PA 19104-6316, USA. Electronic address: .
Vigliaturo R; Department of Earth and Environmental Science, University of Pennsylvania, Philadelphia, PA 19104-6316, USA.
Choi JK; Department of Earth and Environmental Science, University of Pennsylvania, Philadelphia, PA 19104-6316, USA.
McKeon TP; Center of Excellence in Environmental Toxicology, University of Pennsylvania, Philadelphia, PA 19104-6316, USA.
Krekeler MPS; Department of Geology and Environmental Earth Science, Miami University Hamilton, Hamilton, OH 45011, USA; Department of Geology and Environmental Earth Science, Miami University, Oxford, OH 45056, USA.
Gieré R; Department of Earth and Environmental Science, University of Pennsylvania, Philadelphia, PA 19104-6316, USA; Center of Excellence in Environmental Toxicology, University of Pennsylvania, Philadelphia, PA 19104-6316, USA.
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Źródło:
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The Science of the total environment [Sci Total Environ] 2021 Jan 01; Vol. 750, pp. 141202. Date of Electronic Publication: 2020 Aug 07.
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Typ publikacji:
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Journal Article
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Język:
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English
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Imprint Name(s):
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Original Publication: Amsterdam, Elsevier.
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MeSH Terms:
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Metals, Heavy*/analysis
Paint*
Environmental Monitoring ; Environmental Pollution/analysis ; Humans ; Silicon Dioxide ; Spectrometry, X-Ray Emission
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Grant Information:
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P30 ES013508 United States ES NIEHS NIH HHS
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Contributed Indexing:
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Keywords: Chemical evolution; Crocoite; Electron microscopy; Silica coating; Simulated biofluids; Yellow traffic paint
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Substance Nomenclature:
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0 (Metals, Heavy)
7631-86-9 (Silicon Dioxide)
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Entry Date(s):
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Date Created: 20200828 Date Completed: 20201111 Latest Revision: 20220102
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Update Code:
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20240105
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PubMed Central ID:
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PMC7657991
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DOI:
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10.1016/j.scitotenv.2020.141202
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PMID:
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32853929
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Pollution from heavy metals in urban environments is a topic of growing concern because many metals, including Pb and Cr, are a human health hazard. Exposure to Pb and Cr has been linked to the inhibition of neurological development as well as toxic effects on many organs. Yellow traffic paint (YTP) is a mixture that contains organic polymers, binders, and pigments, which in some cases consist of crocoite (PbCrO 4 ) that may be coated by silica. The primary aim of this study was to investigate the behavior of the crocoite pigment grains within YTP and their silica coatings in simulated environmental and human body conditions. To do this, both YTP and asphalt were collected in Philadelphia, PA, USA. These samples as well as a standard PbCrO 4 were investigated with powder X-ray diffraction, X-ray fluorescence, environmental scanning electron microscopy (ESEM), transmission electron microscopy, and energy-dispersive X-ray spectroscopy. Using this multi-analytical approach, mineral phases were determined in the YTP, their shape, dimensional distributions, crystallinity, and chemical composition, as well as elemental distributions before and after experimental interactions. Three batch dissolution experiments with YTP, asphalt, and standard PbCrO 4 were performed to simulate ingestion, inhalation, and environmental interaction with rainwater. Elemental releases were determined with inductively coupled plasma-optical emission spectrometry, and results indicated that little (ingestion) to no (environmental and inhalation) Pb and Cr were leached from the YTP during the three experimental procedures. This is likely due to the silica coating that encapsulates the crocoite particles, which persisted during all interactions. The ESEM results for YTP showed dimensional reductions after interactions with all three fluids. The silica coating must be further explored to determine how it breaks down in real environmental conditions.
Competing Interests: Declaration of competing interest The authors have no conflicts of interests to declare.
(Copyright © 2020 Elsevier B.V. All rights reserved.)
