A Retrospective Job Exposure Matrix for Estimating Exposure to 2,3, 7,8-Tetrachlorodibenzo-P-Dioxin
Public Domain
Peer Reviewed
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2000/07/01
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Description:A job exposure matrix was developed to estimate the 2,3, 7,8-tetrachlorodibenzo-p-dioxin exposure of 3,538 workers who produced 2,4,5-trichlorophenol and its derivatives. Daily TCDD exposure scores that were plant, process, and period specific were estimated for each job title as the product of 1) the concentration of TCDD (microg/g); 2) a qualitative factor to account for the extent of worker contact and 3) time exposed to TCDD contamination. Daily scores were summed to compute individual cumulative TCDD exposure scores. Daily TCDD exposure scores ranged from 0.001 to 1,250. Cumulative TCDD scores ranged from 0.002 to 1,559,430. The 393 workers with records of chloracne in the TCDD exposure cohort (11%) had markedly higher cumulative scores than those with no record of chloracne (a median score of 11,546 vs. 77). The cumulative TCDD exposure scores incorporate both duration and level of exposure, and permit the relative ranking of worker exposures for the evaluation of exposure-response relationships between TCDD exposure and mortality in an updated cohort study analysis. Description provided by NIOSH
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Keywords:
- Risk analysis
- Dioxins
- Humans
- Skin disorders
- Skin lesions
- Dose response
- Chlorinated hydrocarbons
- Environmental contamination
- Chemical manufacturing industry
- Chemical industry workers
- Workplace studies
- Author Keywords: dioxin
- TCDD
- exposure assessment
- Agent Orange
- 2,4,5-trichlorophenol
- phenoxy herbicides
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ISSN:0271-3586
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Pages in Document:28-39
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Volume:38
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Issue:1
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NIOSHTIC Number:nn:20020782
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Citation:Am J Ind Med 2000 Jul; 38(1):28-39
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Contact Point Address:Laurie Piacitelli, NIOSH, 4676 Columbia Parkway, MS R14, Cincinnati, OH 45226
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Email:lap1@cdc.gov
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CAS Registry Number:
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Federal Fiscal Year:2000
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Peer Reviewed:True
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Source Full Name:American Journal of Industrial Medicine
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Main Document Checksum:urn:sha-512:b9e1333165a998b900d3f2488c9c80236169427da4593a4530e0e09ad098fe860691191c7daeec8f62e50703ddb6c6228f2b745f4d20a5e93bd7718dbecfa370
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