A comparison of the lead particle content of indoor dust before and after a lead paint abatement

A new source of lead recontamination

A. Hunt, J. Hawkins, E. Gilligan, Shobha K Bhatia

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

The lead particle content of floor dust in a housing unit scheduled for interior lead paint hazard removal was characterised microscopically to identify the contributing source(s) of the lead. It was hypothesised that elevated levels of lead in the dust resulted from the deterioration of the lead-based paint on the indoor surfaces. The question of lead particle source attribution was addressed using a combination of scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). SEM/EDS provided data on the size, shape, and composition of the individual lead-containing dust particles. The floor dusts which were analysed contained a variety of lead particle types and eight of these types from several rooms exhibited unique morphological and/or chemical characteristics. These were variously classified as lead paint particles. The lead levels in the floor dusts prior to the abatement were ≥ 100 μg·ft -2. The floor dust lead concentrations immediately following the abatement were all less than the pre-abatement levels, but a re-sampling 2 months after the abatement found that the amount of lead in two of the rooms was approximately 3 and 4.5 times higher than the levels prior to the abatement. SEM/EDS analysis of the floor dusts samples collected 2 months after the abatement showed that in these two rooms the constituent particulate lead differed from that in any of the pre-abatement dusts. Following attempts to identify possible sources of recontamination, it was found that this previously unidentified particulate lead was consistent in form with lead scraped from the interior of one of the radiators which had been removed from the complex some time after the abatement. Residual water spilling from the radiators during the course of removal was, in all likelihood, the cause of the unexpectedly elevated dust lead levels.

Original languageEnglish (US)
Pages (from-to)32-46
Number of pages15
JournalIndoor and Built Environment
Volume7
Issue number1
StatePublished - 1998

Fingerprint

Dust abatement
Paint
Dust
Particles (particulate matter)
Lead
Electron Scanning Microscopy
Energy dispersive spectroscopy
Radiators
Scanning electron microscopy
X-Ray Emission Spectrometry
Interiors (building)

Keywords

  • Electron microscopy
  • Floor dust
  • Lead exposure
  • Lead paint abatement
  • Source attribution

ASJC Scopus subject areas

  • Environmental Engineering
  • Public Health, Environmental and Occupational Health
  • Building and Construction

Cite this

A comparison of the lead particle content of indoor dust before and after a lead paint abatement : A new source of lead recontamination. / Hunt, A.; Hawkins, J.; Gilligan, E.; Bhatia, Shobha K.

In: Indoor and Built Environment, Vol. 7, No. 1, 1998, p. 32-46.

Research output: Contribution to journalArticle

@article{ee17c3118d564f67aa10888ff9d99d4a,
title = "A comparison of the lead particle content of indoor dust before and after a lead paint abatement: A new source of lead recontamination",
abstract = "The lead particle content of floor dust in a housing unit scheduled for interior lead paint hazard removal was characterised microscopically to identify the contributing source(s) of the lead. It was hypothesised that elevated levels of lead in the dust resulted from the deterioration of the lead-based paint on the indoor surfaces. The question of lead particle source attribution was addressed using a combination of scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). SEM/EDS provided data on the size, shape, and composition of the individual lead-containing dust particles. The floor dusts which were analysed contained a variety of lead particle types and eight of these types from several rooms exhibited unique morphological and/or chemical characteristics. These were variously classified as lead paint particles. The lead levels in the floor dusts prior to the abatement were ≥ 100 μg·ft -2. The floor dust lead concentrations immediately following the abatement were all less than the pre-abatement levels, but a re-sampling 2 months after the abatement found that the amount of lead in two of the rooms was approximately 3 and 4.5 times higher than the levels prior to the abatement. SEM/EDS analysis of the floor dusts samples collected 2 months after the abatement showed that in these two rooms the constituent particulate lead differed from that in any of the pre-abatement dusts. Following attempts to identify possible sources of recontamination, it was found that this previously unidentified particulate lead was consistent in form with lead scraped from the interior of one of the radiators which had been removed from the complex some time after the abatement. Residual water spilling from the radiators during the course of removal was, in all likelihood, the cause of the unexpectedly elevated dust lead levels.",
keywords = "Electron microscopy, Floor dust, Lead exposure, Lead paint abatement, Source attribution",
author = "A. Hunt and J. Hawkins and E. Gilligan and Bhatia, {Shobha K}",
year = "1998",
language = "English (US)",
volume = "7",
pages = "32--46",
journal = "Indoor and Built Environment",
issn = "1420-326X",
publisher = "SAGE Publications Ltd",
number = "1",

}

TY - JOUR

T1 - A comparison of the lead particle content of indoor dust before and after a lead paint abatement

T2 - A new source of lead recontamination

AU - Hunt, A.

AU - Hawkins, J.

AU - Gilligan, E.

AU - Bhatia, Shobha K

PY - 1998

Y1 - 1998

N2 - The lead particle content of floor dust in a housing unit scheduled for interior lead paint hazard removal was characterised microscopically to identify the contributing source(s) of the lead. It was hypothesised that elevated levels of lead in the dust resulted from the deterioration of the lead-based paint on the indoor surfaces. The question of lead particle source attribution was addressed using a combination of scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). SEM/EDS provided data on the size, shape, and composition of the individual lead-containing dust particles. The floor dusts which were analysed contained a variety of lead particle types and eight of these types from several rooms exhibited unique morphological and/or chemical characteristics. These were variously classified as lead paint particles. The lead levels in the floor dusts prior to the abatement were ≥ 100 μg·ft -2. The floor dust lead concentrations immediately following the abatement were all less than the pre-abatement levels, but a re-sampling 2 months after the abatement found that the amount of lead in two of the rooms was approximately 3 and 4.5 times higher than the levels prior to the abatement. SEM/EDS analysis of the floor dusts samples collected 2 months after the abatement showed that in these two rooms the constituent particulate lead differed from that in any of the pre-abatement dusts. Following attempts to identify possible sources of recontamination, it was found that this previously unidentified particulate lead was consistent in form with lead scraped from the interior of one of the radiators which had been removed from the complex some time after the abatement. Residual water spilling from the radiators during the course of removal was, in all likelihood, the cause of the unexpectedly elevated dust lead levels.

AB - The lead particle content of floor dust in a housing unit scheduled for interior lead paint hazard removal was characterised microscopically to identify the contributing source(s) of the lead. It was hypothesised that elevated levels of lead in the dust resulted from the deterioration of the lead-based paint on the indoor surfaces. The question of lead particle source attribution was addressed using a combination of scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). SEM/EDS provided data on the size, shape, and composition of the individual lead-containing dust particles. The floor dusts which were analysed contained a variety of lead particle types and eight of these types from several rooms exhibited unique morphological and/or chemical characteristics. These were variously classified as lead paint particles. The lead levels in the floor dusts prior to the abatement were ≥ 100 μg·ft -2. The floor dust lead concentrations immediately following the abatement were all less than the pre-abatement levels, but a re-sampling 2 months after the abatement found that the amount of lead in two of the rooms was approximately 3 and 4.5 times higher than the levels prior to the abatement. SEM/EDS analysis of the floor dusts samples collected 2 months after the abatement showed that in these two rooms the constituent particulate lead differed from that in any of the pre-abatement dusts. Following attempts to identify possible sources of recontamination, it was found that this previously unidentified particulate lead was consistent in form with lead scraped from the interior of one of the radiators which had been removed from the complex some time after the abatement. Residual water spilling from the radiators during the course of removal was, in all likelihood, the cause of the unexpectedly elevated dust lead levels.

KW - Electron microscopy

KW - Floor dust

KW - Lead exposure

KW - Lead paint abatement

KW - Source attribution

UR - http://www.scopus.com/inward/record.url?scp=0002428356&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0002428356&partnerID=8YFLogxK

M3 - Article

VL - 7

SP - 32

EP - 46

JO - Indoor and Built Environment

JF - Indoor and Built Environment

SN - 1420-326X

IS - 1

ER -