Publications by authors named "Sheryl A Singerling"

Article Synopsis
  • WUI fires burn treated wood, releasing harmful elements like chromium, copper, and arsenic found in the ashes of structures.
  • The study uses advanced techniques (ICP-TOF-MS and TEM) to analyze both the elemental concentrations and the crystalline phases of these elements in ash samples.
  • Findings reveal that chromium, copper, and arsenic are the dominant components in the ashes, with specific molecular associations and ratios, indicating significant release of toxic substances during such fires.
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Although metal and metalloid concentrations in wildfire ashes have been documented, the nature and concentrations of incidental nanomaterials (INMs) in wildland-urban interface (WUI) fire ashes have received considerably less attention. In this study, the total metal and metalloid concentrations of 57 vegetation, structural, and vehicle ashes and underlying soils collected at the WUI following the 2020 fire season in northern California - North Complex Fire and LNU Lightning Complex Fire - were determined using inductively coupled plasma-time of flight-mass spectrometry after microwave-assisted acid digestion. The concentrations of Ti, Zn, Cu, Ni, Pb, Sn, Sb, Co, Bi, Cr, Ba, As, Rb, and W are generally higher in structural/vehicle-derived ashes than in vegetation-derived ashes and soils.

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The carbon isotope compositions (δC values) of 23 hard ciders obtainable in the United States were analyzed to detect adjuncts, specifically added C sugars (i.e., corn syrup and cane sugar).

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