TY - JOUR
T1 - International analysis of sources and human health risk associated with trace metal contaminants in residential indoor dust
AU - Isley, Cynthia Faye
AU - Fry, Kara L.
AU - Liu, Xiaochi
AU - Filippelli, Gabriel Michael
AU - Entwistle, Jane A.
AU - Martin, Adam P.
AU - Kah, Melanie
AU - Meza-Figueroa, Diana
AU - Shukle, John T.
AU - Jabeen, Khadija
AU - Famuyiwa, Abimbola O.
AU - Wu, Liqin
AU - Sharifi Soltani, Neda
AU - Doyi, Israel N. Y.
AU - Argyraki, Ariadne
AU - Ho, Kin Fai
AU - Dong, Chenyin
AU - Gunkel-Grillon, Peggy
AU - Aelion, C. Marjorie
AU - Taylor, Mark Patrick
N1 - Copyright the Author(s) 2021. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.
PY - 2022/1/18
Y1 - 2022/1/18
N2 - People spend increasing amounts of time at home, yet the indoor home environment remains understudied in terms of potential exposure to toxic trace metals. We evaluated trace metal (and metalloid) concentrations (As, Cu, Cr, Mn, Ni, Pb, and Zn) and health risks in indoor dust from homes from 35 countries, along with a suite of potentially contributory residential characteristics. The objective was to determine trace metal source inputs and home environment conditions associated with increasing exposure risk across a range of international communities. For all countries, enrichments compared to global crustal values were Zn > Pb > Cu > As > Cr > Ni; with the greatest health risk from Cr, followed by As > Pb > Mn > Cu > Ni > Zn. Three main indoor dust sources were identified, with a Pb-Zn-As factor related to legacy Pb sources, a Zn-Cu factor reflecting building materials, and a Mn factor indicative of natural soil sources. Increasing home age was associated with greater Pb and As concentrations (5.0 and 0.48 mg/kg per year of home age, respectively), as were peeling paint and garden access. Therefore, these factors form important considerations for the development of evidence-based management strategies to reduce potential risks posed by indoor house dust. Recent findings indicate neurocognitive effects from low concentrations of metal exposures; hence, an understanding of the home exposome is vital.[Graphic presents]
AB - People spend increasing amounts of time at home, yet the indoor home environment remains understudied in terms of potential exposure to toxic trace metals. We evaluated trace metal (and metalloid) concentrations (As, Cu, Cr, Mn, Ni, Pb, and Zn) and health risks in indoor dust from homes from 35 countries, along with a suite of potentially contributory residential characteristics. The objective was to determine trace metal source inputs and home environment conditions associated with increasing exposure risk across a range of international communities. For all countries, enrichments compared to global crustal values were Zn > Pb > Cu > As > Cr > Ni; with the greatest health risk from Cr, followed by As > Pb > Mn > Cu > Ni > Zn. Three main indoor dust sources were identified, with a Pb-Zn-As factor related to legacy Pb sources, a Zn-Cu factor reflecting building materials, and a Mn factor indicative of natural soil sources. Increasing home age was associated with greater Pb and As concentrations (5.0 and 0.48 mg/kg per year of home age, respectively), as were peeling paint and garden access. Therefore, these factors form important considerations for the development of evidence-based management strategies to reduce potential risks posed by indoor house dust. Recent findings indicate neurocognitive effects from low concentrations of metal exposures; hence, an understanding of the home exposome is vital.[Graphic presents]
KW - dust
KW - trace metals
KW - homes
KW - human health risk
KW - lead
KW - sources
KW - enrichment
KW - modeling
UR - http://www.scopus.com/inward/record.url?scp=85122533542&partnerID=8YFLogxK
U2 - 10.1021/acs.est.1c04494
DO - 10.1021/acs.est.1c04494
M3 - Article
C2 - 34942073
VL - 56
SP - 1053−1068
JO - Environmental Science and Technology
JF - Environmental Science and Technology
SN - 1520-5851
IS - 2
ER -