Evaluating the use of synchrotron X-ray spectroscopy in investigating brominated flame retardants in indoor dust

Blanchard, Peter E. R.; Babichuk, Nicole; Sarkar, Atanu

doi:10.1007/s11356-020-10623-4

Cited by 5 publications

(2 citation statements)

References 36 publications

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“…A significant component of house dust is of biological origin, including microbes and their secretions, dead skin cells, dander, hair and respiratory secretions (Morawska and Salthammer, 2003). The ingress of outdoor particulate matter, including allergens, brought inside on clothes, footwear, pets or by the wind, and that originating indoors from cooking, smoking and the wear and tear of furnishings, are often major contributing sources in indoor dust, as well as a varied array of inorganic and organic chemicals from sources including cleaning products and building materials (Blanchard et al, 2020;Salthammer, 2020). This indoor dust serves as a reservoir for environmental exposure to microbial communities, many of which are benign, some are beneficial, whilst some exhibit pathogenicity.…”

Section: Introductionmentioning

confidence: 99%

Bacterial Diversity in House Dust: Characterization of a Core Indoor Microbiome

Thompson

Argyraki

Bashton

et al. 2021

Front. Environ. Sci.

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Our indoor microbiome consists of a wide range of microbial taxa. Whilst many of these microbes are benign, some are beneficial, some harmful, yet our knowledge of the spatial heterogeneity of bacterial assemblages in our residential environment remains limited. To investigate the existence of a common core house dust bacterial microbiome we selected household vacuum dusts, collected through a citizen science approach, from homes across two bioclimatic regions (UK, Oceanic/Maritime and Greece, Mediterranean). Following the extraction of DNA from each dust sample, we targeted the bacterial 16S rRNA gene using Illumina NextSeq sequencing. PERMANOVA analysis of the microbial communities at family level grouped samples within their distinct bioclimatic region and SIMPER analysis at genus level identified the statistically significant taxa responsible for driving diversity between these groups. A “common to all” core house dust microbiome consisted of Acinetobacter, Massalia, Rubellimicrobium, Sphingomonas and Staphylococcus; genera typically associated with human occupancy and common environmental sources. Additionally, a “unique location specific” microbiome was identified, reflective of the bioclimatic region. The Greek dusts indicated a lower average diversity than the UK house dusts, with a high abundance of Rhizobiaceae in the Greek samples. Our study highlights citizen science as a powerful approach to access the indoor residential environment, at scale, and establishes the existence of a “core” house dust microbiome independent of bioclimatic region.

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Section: Introductionmentioning

confidence: 99%

Bacterial Diversity in House Dust: Characterization of a Core Indoor Microbiome

Thompson

Argyraki

Bashton

et al. 2021

Front. Environ. Sci.

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“…The use of SR-XRF for the analysis of brominated flame retardants (BFRs) has been shown to have a low LOD (<1 μg g −1 ) which is suitable for BFRs and can be combined with XANES to speciate the Br-containing species present in household dust. 134 The study investigated twenty indoor dust samples from rural homes in Newfoundland, Canada and identified Br in all the samples, with concentrations ranging from 2 to 19 μg g −1 . The XANES analysis identified organic-based Br-containing species in several samples, proposed to be BFRs based on the spectral line shape.…”

Section: Elemental Speciation Analysismentioning

confidence: 99%

Atomic Spectrometry Update: review of advances in elemental speciation

Clough

Harrington

Hill

et al. 2021

J. Anal. At. Spectrom.

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Halogen Tailoring of Platinum Electrocatalyst with High CO Tolerance for Methanol Oxidation Reaction

Hui,

Yan,

Zhang

et al. 2024

Angewandte Chemie

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The catalytic activity of platinum for the CO oxidation depends on the interaction of electron donation and back‐donation at the platinum center. Here we demonstrate that the platinum bromine nanoparticles with electron‐rich properties on bromine bonded with sp‐C in graphdiyne (PtBr NPs/Br‐GDY), which is formed by bromine ligand and constitutes an electrocatalyst with a high CO‐resistant for methanol oxidation reaction (MOR). The catalyst showed peak mass activity for MOR as high as 10.4 A mgPt−1, which is 20.8 times higher than the 20% Pt/C. The catalyst also showed robust long‐term stability with slight current density decay after 100 hours at 35 mA cm−2. Structural characterization, experimental, and theoretical studies show that the electron donation from bromine makes the surface of platinum catalysts highly electron‐rich, and can strengthen the adsorption of CO as well as enhance π back‐donation of Pt to weaken the C−O bond to facilitate CO electrooxidation and enhance catalytic performance during MOR. The results highlight the importance of electron‐rich structure among active sites in Pt‐halogen catalysts and provide detailed insights into the new mechanism of CO electrooxidation to overcome CO poisoning at the Pt center on an orbital level.

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Evaluating the use of synchrotron X-ray spectroscopy in investigating brominated flame retardants in indoor dust

Cited by 5 publications

References 36 publications

Bacterial Diversity in House Dust: Characterization of a Core Indoor Microbiome

Bacterial Diversity in House Dust: Characterization of a Core Indoor Microbiome

Atomic Spectrometry Update: review of advances in elemental speciation

Halogen Tailoring of Platinum Electrocatalyst with High CO Tolerance for Methanol Oxidation Reaction

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