International Analysis of Sources and Human Health Risk Associated with Trace Metal Contaminants in Residential Indoor Dust

Cynthia Faye Isley*, Kara L. Fry, Xiaochi Liu, Gabriel Michael Filippelli, Jane A. Entwistle, Adam P. Martin, Melanie Kah, Diana Meza-Figueroa, John T. Shukle, Khadija Jabeen, Abimbola O. Famuyiwa, Liqin Wu, Neda Sharifi-Soltani, Israel N.Y. Doyi, Ariadne Argyraki, Kin Fai Ho, Chenyin Dong, Peggy Gunkel-Grillon, C. Marjorie Aelion, Mark Patrick Taylor

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

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.

Original languageEnglish
Pages (from-to)1053-1068
Number of pages16
JournalEnvironmental Science and Technology
Volume56
Issue number2
DOIs
StatePublished - 18 Jan 2022

Bibliographical note

Funding Information:
This study is an output from the project “DustSafe: Citizen insights to the composition and risks of household dust”, which was funded by an Australian Government Citizen Science Grant, CSG55984 to M.P.T. This work was partially supported by the Environmental Resilience Institute, funded by Indiana University’s Prepared for Environmental Change Grand Challenge Initiative, and by the National Science Foundation award ICER-1701132 (the USA) to G.M.F.; the Natural Environment Research Council (Research Grant NE/T004401/1, U.K.) to J.E.; the Royal Society of Chemistry Developing World Scholarship Scheme (ACTF19/600504/11, Nigeria) to A.F.; National Natural Science Foundation of China (No. 41703094) to L.W., and funding for K.J.’s Ph.D. research programme (the U.K.) from Northumbria University. C.M.A. was funded on a Fulbright Global Scholar Award (8467-MC) by the J. William Fulbright Foreign Scholarship Board. The work presented in this paper was in part supported by the NERC grant NE/T004401/1.

Funding Information:
The authors are deeply grateful for the support provided by the public over years by sharing their dust and home data with them. They are indebted to Olympus Australia, particularly Sam Habib, who has provided technical support, loaning, and fixing of instruments, which has significantly benefited the program. Tom zur Loye and Jeremiah Mickey of the Apperception Group are thanked for their contributions to the development of the MapMyEnvironment platform. Dr. Vilim Filipović and Dr. Lana Filipovię of the University of Zagreb Faculty of Agriculture are thanked for provision of samples and data from Croatia. The authors are grateful for the technical assistance of Belem González-Grijalva during the analytical work in Mexico. They also thank Macquarie University for providing equipment grants, and technical and marketing support, without which this program would not have flourished. They acknowledge the contribution of the many previous students and staff who have supported the program in various ways, which have included sample analysis, attendance at community meetings, and helping promote the program. James Darbyshire is thanked for his ongoing technical support and database development for the program. The authors also thank the reviewers for their feedback, helping to refine this research. This study is an output from the project “DustSafe: Citizen insights to the composition and risks of household dust”, which was funded by an Australian Government Citizen Science Grant, CSG55984 to M.P.T. This work was partially supported by the Environmental Resilience Institute, funded by Indiana University’s Prepared for Environmental Change Grand Challenge Initiative, and by the National Science Foundation award ICER-1701132 (the USA) to G.M.F.; the Natural Environment Research Council (Research Grant NE/T004401/1, U.K.) to J.E.; the Royal Society of Chemistry Developing World Scholarship Scheme (ACTF19/600504/11, Nigeria) to A.F.; National Natural Science Foundation of China (No. 41703094) to L.W., and funding for K.J.’s Ph.D. research programme (the U.K.) from Northumbria University. C.M.A. was funded on a Fulbright Global Scholar Award (8467-MC) by the J. William Fulbright Foreign Scholarship Board. The work presented in this paper was in part supported by the NERC grant NE/T004401/1.

Publisher Copyright:
© 2021 The Authors. Published by American Chemical Society

Keywords

  • dust
  • enrichment
  • homes
  • human health risk
  • lead
  • modeling
  • sources
  • trace metals

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