Exposure assessment and reference values for settled dust in indoor environments

2021 ◽  
Vol 20 (4) ◽  
pp. 383-388
Author(s):  
Guillaume Perouel ◽  
Marion Keirsbulck ◽  
Thomas Chaigneau ◽  
Matthieu Delannoy ◽  
Williams Esteve ◽  
...  
Keyword(s):  
Exposure Assessment ◽  
Reference Values ◽  
Indoor Environments ◽  
Settled Dust

Propositional modification for the USEPA models for human exposure assessment on chemicals in settled dust or soil

2017 ◽  
Vol 24 (24) ◽  
pp. 20113-20116 ◽  
Author(s):  
Zhiguo Cao ◽  
Leicheng Zhao ◽  
Guifen Zhu ◽  
Qiaoying Chen ◽  
Guangxuan Yan ◽  
...  
Keyword(s):  
Exposure Assessment ◽  
Human Exposure ◽  
Settled Dust ◽  
Human Exposure Assessment

scholarly journals Emerging and Legacy Organic Halogenated Pollutants in Indoor Dusts

Proceedings ◽  
2019 ◽  
Vol 44 (1) ◽  
pp. 3
Author(s):  
Giulia Simonetti ◽  
Elisa Sonego ◽  
Federica Castellani ◽  
Patrizia Di Filippo ◽  
Carmela Riccardi ◽  
...  
Keyword(s):  
Organic Pollutants ◽  
Polybrominated Diphenyl Ethers ◽  
Flame Retardants ◽  
Cost Effective ◽  
Contamination Level ◽  
Indoor Environments ◽  
Dust Collection ◽  
Settled Dust ◽  
Halogenated Pollutants ◽  
Emerging Organic Pollutants

In indoor environments, the concentration of halogenated organic pollutants in dust can be high due to the presence of products treated with these chemicals. In this study, we monitored emerging organic pollutants, such as novel brominated flame retardants (nBFRs) and some perfluoroalkyl substances (PFAS), together with legacy polychlorinated biphenyls (PCB) and polybrominated diphenyl ethers (PBDEs) in settled dust collected in five different (domestic and occupational) environments. In workplaces, a high incidence of PCBs, PBDEs and nBFRs occurred. Dust collection represents a simple, fast and cost-effective sampling and dust contamination level can be a useful indicator of environment healthiness.

scholarly journals Exposure Assessment of Allergens and Metals in Settled Dust in French Nursery and Elementary Schools

Atmosphere ◽  
2015 ◽  
Vol 6 (11) ◽  
pp. 1676-1694 ◽  
Author(s):  
Nuno Canha ◽  
Corinne Mandin ◽  
Olivier Ramalho ◽  
Guillaume Wyart ◽  
Jacques Ribéron ◽  
...  
Keyword(s):  
Elementary Schools ◽  
Exposure Assessment ◽  
Settled Dust

Exposure Assessment Analysis of a Heated Breathing Manikin With Rotation in a Displacement Ventilated Room by Numerical Methods

2014 ◽  
Author(s):  
S. A. Keshavarz ◽  
M. Salmanzadeh ◽  
G. Ahmadi
Keyword(s):  
Numerical Methods ◽  
Exposure Assessment ◽  
Indoor Environment ◽  
Human Motion ◽  
The Body ◽  
Thermal Plume ◽  
Indoor Environments ◽  
Human Respiration ◽  
Airflow Field ◽  
Simulation Results

It is well known that the airflow is instrumental in the transmission of airborne infectious diseases in indoor environments. The airflow pattern in indoor environment is affected by the ventilation airflow, thermal plume around human bodies, human respiration, human motion and other activities. In this study, the CFD approach was used to simulate airflow field and particle transport in a room to provide exposure assessment for a heated breathing manikin with and without rotational motion. The simulation results indicated that the rotation of the manikin significantly impacts the thermal plume of the body and the associated transport of particulates.

Partitioning of phthalates among the gas phase, airborne particles and settled dust in indoor environments

2008 ◽  
Vol 42 (7) ◽  
pp. 1449-1460 ◽  
Author(s):  
Charles J. Weschler ◽  
Tunga Salthammer ◽  
Hermann Fromme
Keyword(s):  
Gas Phase ◽  
Airborne Particles ◽  
Indoor Environments ◽  
Settled Dust

scholarly journals Workers’ dermal and total exposure to metals in biomass-fired power plants

Biomonitoring ◽  
2015 ◽  
Vol 2 (1) ◽  
Author(s):  
M. Jumpponen ◽  
P. Heikkinen ◽  
H. Rönkkömäki ◽  
J. Laitinen
Keyword(s):  
Exposure Assessment ◽  
Reference Values ◽  
Power Plants ◽  
Dermal Exposure ◽  
Hand Washing ◽  
Whole Body ◽  
Metal Exposure ◽  
Total Exposure ◽  
Exposed Population ◽  
Work Tasks

AbstractThe aim of this study was to measure ash removal and maintenance workers’ exposure to metals, and assess the suitability of different methods to evaluate metal exposure during these work tasks. Whole-body samples and hand-washing method were used in workers’ dermal exposure assessment, and biomonitoring methods of metals in total exposure assessment. The greatest levels of Al, Pb, Cd, Cu, S, and Zn on workers’ hands were measured in recycled fuel-fired power plants. The median concentrations of lead on workers’ whole-body samples were 4.5 ng/cm2, 17.0 ng/cm2, 11.3 ng/cm2, and 58.4 ng/cm2 in pellet-, peat-, wood- and recycled fuel-fired power plants, respectively. In recycled fuel-fired power plants, workers’ excretions of Al, Pb, and Mn exceeded the reference values of non-exposed population in 33%, 100%, and 50% of samples, respectively. The dermal exposure results clearly showed that power plant ash can significantly contaminate workers’ hands and bodies. The fact that the workers’ urinary excretions of metals exceeded the reference values proved intake of metals during these work tasks. Biomonitoring methods take into account exposures from different sources and, due to that, they are the most recommended approach for estimating the total metal exposure of workers. Hand-washing and whole body sampling were the most recommendable methods for assessing the protection efficiency of gloves and coveralls.

scholarly journals Contamination Status and Emission Sources of Polychlorinated Biphenyls in Settled Dust from End-of-life Vehicle Processing and Urban Areas, Northern Vietnam

2020 ◽  
Vol 36 (3) ◽  
Author(s):  
Hoang Quoc Anh ◽  
Shin Takahashi ◽  
Tu Binh Minh ◽  
Tran Manh Tri
Keyword(s):  
Polychlorinated Biphenyls ◽  
End Of Life ◽  
Urban Areas ◽  
Electrical Equipment ◽  
Emission Sources ◽  
Indoor Environments ◽  
Organic Pigments ◽  
Northern Vietnam ◽  
Settled Dust ◽  
Equipment Application

Concentrations of polychlorinated biphenyls (PCBs) including 43 congeners of 10 homologs were determined in settled dust samples collected from urban houses and end-of-life vehicle (ELV) processing workshops in northern Vietnam. Concentrations of total 43 PCBs (ΣPCBs), 7 indicator PCBs (IN-PCBs), and 12 dioxin-like PCBs (DL-PCBs) in the ELV workshop dusts were significantly higher than those measured in the urban house dusts, suggesting ELV processing activities as potential sources of PCBs. However, concentrations of PCB-11 (3,3’-dichlorobiphenyl) in the urban house dusts (mean 4.5; range 1.2–8.7 ng/g) were markedly higher than levels found in the ELV workshop dusts (1.6; 0.46–5.4 ng/g). PCB-11 is a novel congener because it is only a trace component of technical PCB mixtures but identified as a major impurity of many organic pigments, especially diarylide yellow pigments. PCB patterns of the ELV workshop dusts were dominated by penta- and hexa-PCBs with major congeners as PCB-118, -138, -153, -110, and -101, which were also principal components of technical formulations such as Aroclor 1254, Kanechlor 500, and Sovol. Meanwhile, PCB-11 served as the most predominant congener detected in the urban house dusts, implying current emissions from paints and pigmented products; however, this point should be confirmed by further studies on the occurrence of PCBs in Vietnamese commercial products. Apart from PCB-11, the urban house dusts also contained elevated proportions of penta- and hexa-PCBs, suggesting residues from electrical equipment application in the past. Our results indicate that even though PCBs are legacy and banned chemicals, their presence has been observed in indoor environments due to their persistent nature and novel emission sources. Further studies on the occurrence and emission behavior of these pollutants should be conducted, including not only congeners in technical mixtures but also unintentionally produced compounds.

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