Journal
BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
Volume 106, Issue 2, Pages 393-398Publisher
SPRINGER
DOI: 10.1007/s00128-020-03058-7
Keywords
Phthalates; Indoor dust; Oral ingestion; Health risk assessment
Categories
Funding
- National Natural Science Foundation of China [41907345]
- China Postdoctoral Science Foundation [2019M663078]
- State Key Laboratory of Pollution Control and Resource Reuse Open Funding Project [PCRRF18024]
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Phthalates are ubiquitous contaminants in the indoor environment, with significant differences in concentrations between house dust and dormitory dust. The three predominant compounds in both microenvironments are DEHP, DBP, and DiBP, accounting for over 98% of total phthalates.
Phthalates are one of ubiquitous contaminants in the indoor environment. In this study, we analyzed concentrations and profiles of 9 phthalates in dust samples collected from houses and university dormitories in Nanjing, China. The total concentrations of phthalates in house and dormitory dust ranged from 111.4 to 3599.1 mu g/g and 86.1 to 1262.3 mu g/g, respectively. Phthalates in house was significantly higher than that in dormitory dust (p < 0.01). Di(2-ethylhexyl) phthalate (DEHP), dibutyl phthalate (DBP) and di-isobutyl phthalate (DiBP) were the three predominant compounds and accounted for more than 98% of total phthalates in the two microenvironments. The estimated daily intake (EDI) of phthalates, carcinogenic risk (CR) of DEHP, and hazard index (HI) values of DEHP, DBP and DiBP were estimated. Except for adults, the CR of DEHP for four subgroups (infants, toddlers, children, and teenagers) had exceeded the limitation, implying that they are at the risk of exposure to DEHP through dust ingestion.
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