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  • Title: Unexpected cause of raised benzene absorption in coke oven by-product workers.
    Author: Colman R, Coleman A.
    Journal: Occup Med (Lond); 2006 Jun; 56(4):269-71. PubMed ID: 16497679.
    Abstract:
    BACKGROUND: Urinary biological monitoring for benzene (by measuring benzene metabolites) in coke oven by-product workers produced the unexpected result that 2 out of 10 employees had significantly raised urinary S-phenylmercapturic acid (S-PMA). However, simultaneous personal air sampling showed no excessive airborne exposure. METHODS: Possible causes for this finding were investigated having excluded inhalation as the route of uptake. It was suspected that skin absorption via contaminated overalls was the possible mechanism and a standard frequency for overall change was introduced. RESULTS: Changing overalls after every four shifts reduced uptake levels to less than the equivalent of 1 ppm inhaled dose for all employees. CONCLUSION: Skin absorption of benzene in coke oven by-product workers from contaminated overalls can be significant and therefore overalls should be changed on a regular and frequent basis.
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