Occupational exposure to mercury: What is a safe level?

R. Moienafshari, B. Bar-Oz, G. Koren

Research output: Contribution to journalReview articlepeer-review

6 Scopus citations


QUESTION One of my pregnant patients, a dental hygienist, uses mercury in her workplace, but appears to have no symptoms of mercury toxicity. She has heard that mercury might affect her fetus. What should I recommend to her? What is a safe level of mercury in the air for pregnant women? ANSWER Testing for levels of mercury in whole blood and, preferably, urine is useful for confirming exposure. Currently, mercury vapour concentrations greater than 0.01 mg/m3 are considered unsafe. Also, women of childbearing age should avoid contact with mercury salts in the workplace.

Original languageEnglish
Pages (from-to)43-45
Number of pages3
JournalCanadian Family Physician
Issue numberJAN.
StatePublished - 1999
Externally publishedYes


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