Exposure of maintenance workers to dioxin-like contaminants during the temporary shutdown of a municipal domestic solid waste incinerator: a case series.
To evaluate workers' exposure to dioxin-like substances (such as polychlorinated dibenzo-p-dioxins, dibenzofurans, and polychlorinated biphenyls), the authors used a chemical-activated luciferase gene expression (CALUX) assay to determine serum dioxin-like activity in five workers before and after two different cleaning-up activities inside a municipal domestic solid-waste incinerator. The workers' mean serum concentration of dioxin-like substances before the first cleaning operation, shown as a weighted value of toxic equivalents (or TEQs) according to the CALUX test, was 17.2 pg CALUX TEQ/g fat (range = 12-22), which is comparable with concentrations found in similarly aged men in a Flemish environmental health pilot study. After cleaning work, the workers' mean serum concentration was 28.5 pg CALUX TEQ/g fat (range = 18-31). At the second plant stoppage, the workers' mean dioxin-like activity was 15.4 pg CALUX TEQ/g fat (range = 12-21) before and 16.4 pg CALUX TEQ/g fat (range = < 10-32, where 10 pg is the limit of determination) after the cleaning operation. These results indicate that workers may be exposed to dioxin-like substances during their performance of cleaning operations in a municipal domestic solid-waste incinerator.
Externe Dienst voor Preventie en Bescherming op het Werk, Agathos-IID in St. Denijs-Westrem, Belgium.
Annemie
A
Raemdonck
Gudrun
G
Koppen
Maaike
M
Bilau
Jan L
JL
Willems
D000328:Adult; D004147:Dioxins / Q000097:blood*; D006801:Humans; D017745:Incineration / Q000295:instrumentation*; D008283:Maintenance; D008297:Male; D008875:Middle Aged; D016273:Occupational Exposure; D012037:Refuse Disposal / Q000379:methods*; D014504:Urban Health
D004147:Dioxins