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Table 4 Mercury levels in Brazilian River Basins, Target Groups

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

Studied population
River Basin
Location N Hg mean μg/g
(median) [SD]
Range
μg/g
> 10 μg/ga Fish
consumption
Adults       
Barbosa
et al. 2001
Negro River
shores
76 21.4 (17.8) [12.7] 1.7-59.0 79%  
Negro River    Men 17 26.2 [13.7]    
     Women 31 18.3 [11.1]    
Pinheiro
et al. 2006
Panacauera 22 ≈ 7.0    
Tocantins
River
Pindobal Grande 43 ≈ 3.0    
Silva
et al. 2004
Tabatinga 98 (6.4) 1.2-17.0   
Amazon River, lakes       
Yokoo
et al. 2003
Pantanal region 129 4.2 (3.7) [2.4] 0.6-13.6   
Cuiabá River       
Children       
Barbosa
et al. 2001
Negro River
shores
73 18.5 (16.4) [10.0] 0.5-45.9 79%  
Negro River       
Pinheiro
et al. 2006
Pindobal Grande 88 ≈ 3.0    
Tocantins River       
Pinheiro
et al. 2007
Panacauera 36 2.3 0.4-9.5 0%  
Tocantins River       
Santos-Filho
et al. 1993
Cubatão
Municipality
217 0.8 [0.5] 0.2-3.0 0%  
Cubatão
River
      
Tavares
et al. 2005
Barão de Melgaço 114 2.1 (1.8) [1.4] 0.4-7.6 0% 4.6 meals/week
Cuiabá River Riverside
communities
72 5.4 (4.7) [3.4] 0.6-17.1   7.8 meals/week
Women       
Pinheiro
et al. 2008
Panacauera 20 3.3 1.3-6.0 0%  
Tocantins River       
Mothers and
their infants
      
Barbosa
et al. 1998
Garimpo
Maria Bonita
     
Fresco River
(Xingu basin)
   Mothers 28 8.1 (8.3) [3.2] 0.8-13.7   
     Infants 54 7.3 (6.6) [3.5] 2.0-20.4   
  1. The Tapajós 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.
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