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Monitoring risks in association with exposure levels among wastewater treatment plant workers.

Authors
Lee-JA; Thorne-PS; Reynolds-SJ; O'Shaughnessy-PT
Source
J Occup Environ Med 2007 Nov; 49(11):1235-1248
NIOSHTIC No.
20040480
Abstract
OBJECTIVE: To investigate the relationship between exposure to hydrogen sulfide and endotoxin during specific job tasks and health symptoms among wastewater treatment plant (WWTP) workers. METHODS: The exposure levels for specific tasks were measured by personal monitoring. The health symptoms of WWTP workers were compared with those of water treatment plant workers through a questionnaire survey. RESULTS: Exposure levels for all monitored tasks were less than 1 ppm for hydrogen sulfide and 91 EU/m (endotoxin units/m) for endotoxin. Statistically higher odds ratios of respiratory, ocular and skin irritation, neurology, and gastrointestine symptoms were shown among WWTP workers compared with water treatment plant workers. Tasks related to sludge handling and plant inspection showed statistically significant associations with memory/concentration difficulties, throat irritation, and stomach pain. CONCLUSIONS: These results suggest that exposure control programs for specific job tasks and work locations are needed.
Keywords
Air-contamination; Analytical-methods; Endotoxins; Exposure-levels; Exposure-limits; Epidemiology; Environmental-health-monitoring; Environmental-exposure; Humans; Men; Women; Gastrointestinal-system; Gastrointestinal-system-disorders; Inhalants; Questionnaires; Respiratory-system-disorders; Pulmonary-system; Pulmonary-system-disorders; Skin-diseases; Skin-exposure; Risk-factors; Waste-disposal; Waste-disposal-systems
Contact
Joung Ae Lee, PhD, Health Protection Office, The University of Iowa, 122 Grand Ave. Ct., Iowa City, IA 52246
CODEN
JOEMFM
CAS No.
7783-06-4
Publication Date
20071101
Document Type
Journal Article
Email Address
eunice-lee@uiowa.edu
Funding Type
Grant
Fiscal Year
2008
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-T42-OH-008491
Issue of Publication
11
ISSN
1076-2752
Source Name
Journal of Occupational and Environmental Medicine
State
IA; CO
Performing Organization
University of Iowa
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