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Table 2 Hair mercury levels in French Guyana

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
General
population
       
BASAG
2007
Maroni
River
Sinnamary 285 1.8   5%  
  Oyapok
River
Lower Maroni River 740 1.7-3.6   2.4%  
   Lower Oyapok 144 1.5-3.4   1 person  
   River 181 4.6-7.2   7.6-18.2%  
   Upper Oyapok River      
Cordier
et al. 1998
Maroni
River
Oyapok
River
11 health centers      
      Adults 255 3.4b 0.2-22.0 12.2%  
      Pregnant women 109 1.6b 0.2-13.0 4.6%  
      Children 136 2.5b 0.2-31.0 11.8  
Fréry
et al. 2001
Maroni
River
Cayodé, Twenké,
Taluhen and
Antécume-Pata
235 11.4 [4.2] 1.9-27.2 57.4% 20-317 g/day
Mothers and their infants        
Cordier
et al. 2002
Maroni
River
Oyapok
River
Upper
Maroni River
     
      Children 156 10.2b   79% 2 meals/day
      Mothers 90 12.7b    
   Oyapok River      
      Children 69 6.5b    
      Mothers 63 6.7b    
   Lower Maroni River      
      Children 153 1.4b    
      Mothers 77 2.8b    
  1. aPercentage of the population with hair mercury levels higher than 10 μg/g. bGeometric mean.