Lowering Urinary Phthalate Metabolite Concentrations Among Children by Reducing Contaminated Dust in Housing Units: A Randomized Controlled Trial and Observational Study

Overview

Journal Environ Sci Technol

Publisher American Chemical Society

Specialty Environmental Health

Date 2020 Feb 27

PMID 32101426

Citations 8

Authors

Clara G Sears

Bruce P Lanphear

Antonia M Calafat

Aimin Chen

Julianne Skarha

Yingying Xu

Kimberly Yolton

Joseph M Braun

Affiliations

Soon will be listed here.

Abstract

Dust in homes can contain phthalates that may adversely affect child development, but whether residential interventions and dust removal can prevent children's exposure to phthalates is unknown. We quantified the influence of a residential lead hazard intervention and dust control on children's urinary phthalate metabolite concentrations. Between 2003 and 2006, The Health Outcomes and Measures of the Environment (HOME) Study randomized 355 pregnant women to receive an intervention to reduce either residential lead or injury hazards before delivery. We quantified eight urinary phthalate metabolites from 288 children at ages 1, 2, or 3 years (680 observations). During yearly home visits, we assessed dust accumulation in housing units. Children in the lead intervention group had 11-12% lower concentrations of the sum of di(2-ethylhexyl) phthalate metabolites, monocarboxyoctyl phthalate, and monocarboxynonyl phthalate compared to the injury intervention group. Monoethyl phthalate concentrations did not differ by group. In observational analyses, children living in housing units that appeared clean had 12-17% lower concentrations of these phthalate metabolites and monobenzyl phthalate, compared to children living in housing units with more dust accumulation. Features of this lead hazard intervention and measures to control dust may reduce children's exposure to phthalates found in building materials and household furnishings.

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