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Exposure to fuel-oil ash and welding emissions during the overhaul of an oil-fired boiler.
J Occup Environ Hyg. 2005 Sep; 2(9):435-43.JO

Abstract

The health effects of exposure to vanadium in fuel-oil ash are not well described at levels ranging from 10 to 500 microg/m(3). As part of a larger occupational epidemiologic study that assessed these effects during the overhaul of a large oil-fired boiler, this study was designed to quantify boilermakers' exposures to fuel-oil ash particles, metals, and welding gases, and to identify determinants of these exposures. Personal exposure measurements were conducted on 18 boilermakers and 11 utility workers (referents) before and during a 3-week overhaul. Ash particles < 10 microm in diameter (PM(10), mg/m(3)) were sampled over full work shifts using a one-stage personal size selective sampler containing a polytetrafluoroethylene filter. Filters were digested using the Parr bomb method and analyzed for the metals vanadium (V), nickel (Ni), iron (Fe), chromium (Cr), cadmium (Cd), lead (Pb), manganese (Mn), and arsenic (As) by inductively coupled plasma mass spectrometry. Nitrogen dioxide (NO(2)) was measured with an Ogawa passive badge-type sampler and ozone (O(3)) with a personal active pump sampler.Time-weighted average (TWA) exposures were significantly higher (p < 0.05) for boilermakers than for utility workers for PM(10) (geometric mean: 0.47 vs. 0.13 mg/m(3)), V (8.9 vs. 1.4 microg/m(3)), Ni (7.4 vs. 1.8 microg/m(3)) and Fe (56.2 vs. 11.2 microg/m(3)). Exposures were affected by overhaul time periods, tasks, and work locations. No significant increases were found for O(3) or NO(2) for boilermakers or utility workers regardless of overhaul period or task group. Fuel-oil ash was a major contributor to boilermakers' exposure to PM(10) and metals. Vanadium concentrations sometimes exceeded the 2003 American Conference of Governmental Industrial Hygienists (ACGIH) threshold limit value.

Authors+Show Affiliations

Liu Y
Department of Environmental Health, Harvard School of Public Health, Boston, Massachusetts, USA. youcheng.liu@yale.edu
Woodin MA
No affiliation info available
Smith TJ
No affiliation info available
Herrick RF
No affiliation info available
Williams PL
No affiliation info available
Hauser R
No affiliation info available
Christiani DC
No affiliation info available

MeSH

AdultAir Pollutants, OccupationalEnvironmental MonitoringFuel OilsHumansInhalation ExposureMiddle AgedNitrogen DioxideOccupational ExposureOzoneParticle SizePower PlantsRespiratory Protective DevicesRisk AssessmentThreshold Limit ValuesVanadiumWelding

Pub Type(s)

Journal Article
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

16048845

Citation

Liu, Youcheng, et al. "Exposure to Fuel-oil Ash and Welding Emissions During the Overhaul of an Oil-fired Boiler." Journal of Occupational and Environmental Hygiene, vol. 2, no. 9, 2005, pp. 435-43.
Liu Y, Woodin MA, Smith TJ, et al. Exposure to fuel-oil ash and welding emissions during the overhaul of an oil-fired boiler. J Occup Environ Hyg. 2005;2(9):435-43.
Liu, Y., Woodin, M. A., Smith, T. J., Herrick, R. F., Williams, P. L., Hauser, R., & Christiani, D. C. (2005). Exposure to fuel-oil ash and welding emissions during the overhaul of an oil-fired boiler. Journal of Occupational and Environmental Hygiene, 2(9), 435-43.
Liu Y, et al. Exposure to Fuel-oil Ash and Welding Emissions During the Overhaul of an Oil-fired Boiler. J Occup Environ Hyg. 2005;2(9):435-43. PubMed PMID: 16048845.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Exposure to fuel-oil ash and welding emissions during the overhaul of an oil-fired boiler. AU - Liu,Youcheng, AU - Woodin,Mark A, AU - Smith,Thomas J, AU - Herrick,Robert F, AU - Williams,Paige L, AU - Hauser,Russ, AU - Christiani,David C, PY - 2005/7/29/pubmed PY - 2006/9/15/medline PY - 2005/7/29/entrez SP - 435 EP - 43 JF - Journal of occupational and environmental hygiene JO - J Occup Environ Hyg VL - 2 IS - 9 N2 - The health effects of exposure to vanadium in fuel-oil ash are not well described at levels ranging from 10 to 500 microg/m(3). As part of a larger occupational epidemiologic study that assessed these effects during the overhaul of a large oil-fired boiler, this study was designed to quantify boilermakers' exposures to fuel-oil ash particles, metals, and welding gases, and to identify determinants of these exposures. Personal exposure measurements were conducted on 18 boilermakers and 11 utility workers (referents) before and during a 3-week overhaul. Ash particles < 10 microm in diameter (PM(10), mg/m(3)) were sampled over full work shifts using a one-stage personal size selective sampler containing a polytetrafluoroethylene filter. Filters were digested using the Parr bomb method and analyzed for the metals vanadium (V), nickel (Ni), iron (Fe), chromium (Cr), cadmium (Cd), lead (Pb), manganese (Mn), and arsenic (As) by inductively coupled plasma mass spectrometry. Nitrogen dioxide (NO(2)) was measured with an Ogawa passive badge-type sampler and ozone (O(3)) with a personal active pump sampler.Time-weighted average (TWA) exposures were significantly higher (p < 0.05) for boilermakers than for utility workers for PM(10) (geometric mean: 0.47 vs. 0.13 mg/m(3)), V (8.9 vs. 1.4 microg/m(3)), Ni (7.4 vs. 1.8 microg/m(3)) and Fe (56.2 vs. 11.2 microg/m(3)). Exposures were affected by overhaul time periods, tasks, and work locations. No significant increases were found for O(3) or NO(2) for boilermakers or utility workers regardless of overhaul period or task group. Fuel-oil ash was a major contributor to boilermakers' exposure to PM(10) and metals. Vanadium concentrations sometimes exceeded the 2003 American Conference of Governmental Industrial Hygienists (ACGIH) threshold limit value. SN - 1545-9624 UR - https://www.unboundmedicine.com/medline/citation/16048845/Exposure_to_fuel_oil_ash_and_welding_emissions_during_the_overhaul_of_an_oil_fired_boiler_ DB - PRIME DP - Unbound Medicine ER -