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Table 5 Hair mercury levels in Brazilian River Basins, Occupational Groups

From: Hair mercury levels in Amazonian populations: spatial distribution and trends

Study Location N Hg mean μg/g Range > 10 μg/ga Fish
consumption
River Basin    (median) [SD]    
Guimarães et al 1999 Pracuúba Lake 15 16.7    
   Tartarugal Grande River (Fishermen) Duas Bocas Lake 15 28.0   87% 14 meals/week (200 g per day)
  Groups      
Palheta & Taylor 1995 Garimpeiros 20   0.4-32.   
   Gurupi River Cachoeira Villagers 5   0.8-4.6   
  River dwellers 10   0.2-15   
  1. The Tapajos and Madeira Rivers basins are not displayed in this table (see Tables 5, 6, 7, 8, 9, 10). aPercentage of the population with hair mercury levels higher than 10 μg/g.