Basic research for biological monitoring in workers exposed to formaldehyde

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Formaldehyde are used at many industrial manufacture, and is hard to measure the formaldehyde exposure concentration to worker. For the reason of establish a biological monitoring method of formaldehyde, we had investigated the correlation between personal exposure concentration of formaldehyde and methanol and urinary concentration of them. There was no correlation between personal formaldehyde exposure concentration and urinary concentration of formaldehyde, formic acid and methanol at the concentration near the occupational exposure limit of formaldehyde. We also examined irritation of formaldehyde using questionnaire. No relation was seen between irritation and personal concentration of formaldehyde.