Mercury exposure in Montrealers who eat St. Lawrence River sportfish

Citation
T. Kosatsky et al., Mercury exposure in Montrealers who eat St. Lawrence River sportfish, ENVIR RES, 84(1), 2000, pp. 36-43
Citations number
34
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Environment/Ecology,"Pharmacology & Toxicology
Journal title
ENVIRONMENTAL RESEARCH
ISSN journal
0013-9351 → ACNP
Volume
84
Issue
1
Year of publication
2000
Pages
36 - 43
Database
ISI
SICI code
0013-9351(200009)84:1<36:MEIMWE>2.0.ZU;2-F
Abstract
We assessed levels and determinants of mercury biomarkers among residents o f Montreal and surroundings who eat sportfish from the nearby St. Lawrence River. Participants were selected from 1118 adult fishers responding to a 1 996 screening questionnaire; the study sample (n =132) overrepresented resp ondents expected to have the greatest and the least exposure to mercury, Ti ssue mercury concentrations were associated with sportfish consumption: amo ng participants who ate sportfish at least once weekly, hair geometric mean (GM)= 0.82 +/- 2.54 mu g/g and blood mercury GM=3.03 +/- 2.43 mu g/L, comp ared to hair GM = 0.38 +/- 2.28 mu g/g and blood mercury GM = 1.44 +/- 2.23 mu g/L for those who ate sportfish less than once weekly. While these leve ls are somewhat higher than those shown for other Greater Lakes and St. Law rence River fishers, only one participant surpassed the Canadian recommende d population mercury limit of 6 mu g/g for hair and 20 mu g/L for blood. Co nsumption of several sportfish species independently explained much of the variation in measured blood mercury; the predatory species pike was the mos t important in multivariable regression, Coincident consumption of waterfow l, fishing during the longer summer/fall rather than the brief winter seaso n, and fishers' age were independently associated with blood mercury. Serum selenium related neither to the level of fish consumption nor to the parti cipants' blood mercury. (C) 2000 Academic Press.