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J Occup Environ Med. 2010 Feb;52(2):131-6. doi: 10.1097/JOM.0b013e3181cd7e80.

Evaluation of coumaphos exposure among tick eradication workers.

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1
Division of Surveillance, Hazard Evaluations, and Field Studies National Institute for Occupational Safety and Health, Cincinnati, Ohio 45226, USA.

Abstract

OBJECTIVE:

To evaluate both the cholinesterase monitoring program and newer field methods of determining coumaphos exposure among tick eradication workers.

METHODS:

Measured blood cholinesterase by the Ellman and field testing methods and tested urine for chlorferon pre- and postshift; conducted personal air sampling, patch sampling of clothing, and wipe sampling of hands for coumaphos.

RESULTS:

Fifteen workers had normal plasma cholinesterase and acetylcholinesterase levels. No significant changes occurred pre- to postshift. High correlation was found between plasma cholinesterase and acetylcholinesterase levels by field testing and Ellman methods (r = 0.91, P < 0.01 and r = 0.63, P < 0.01, respectively). Chlorferon levels rose 4 to 6 hours after use (P < 0.01). Airborne coumaphos was detected in only one sample, in a trace amount. The majority of patch and hand wipe samples detected coumaphos.

CONCLUSIONS:

Dermal exposure to coumaphos resulted in significant increases in urinary metabolites of coumaphos.

PMID:
20134347
DOI:
10.1097/JOM.0b013e3181cd7e80
[Indexed for MEDLINE]
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