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Table 6 Hair mercury levels in the Tapajós River Basin, General Population

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

Study

Location

N

Hg mean μg/g

(median) [SD]

Range μg/g

> 10 μg/ga

Fish

consumption

Akagi et al. 1995

Rainha

11

15.8

2.4-31.0

  
 

Brasília Legal

56

22.6

3.5-151.0

  
 

Ponta de Pedra

10

10.2

6.2-12.6

  
 

Jacareacanga

48

16.6

1.5-46.0

  

Barbosa et al. 1997

Apiacás Reservation

55

34.2 (42.8)

?-128

93%

≈ 6 times/week

Crompton et al. 2002

Jacareacanga

205

8.6

0.3-83.2

  

Dorea et al. 2005

Kaburuá

89

2.5 [1.4]

  

22 g/day

 

Cururu Mission

138

3.7 [1.6]

  

32 g/day

 

Terra Preta

22

6.0 [2.9]

  

52 g/day

 

Kayabi

47

12.8 [7.0]

  

110 g/day

Malm et al. 1995

Jacareacanga

10

25.0

5.7-52.0

  
 

Brasília Legal

13-29

26.0

4.7-151.0

  
 

Ponta de Pedra

4-26

12.0

   
 

Santarem

11

2.7

   

Pinheiro, Guimarães et al. 2000

Rainha

29

17.2

   
 

Barreiras

111

18.9

   
 

São Luís do Tapajós

30

25.3

   
 

Paranα-Mirim

21

9.2

   

Pinheiro, Nakanishi et al. 2000

Rainha

29

17.6

   
 

Barreiras

78

19.1

   

Santos et al. 2000

Brasília Legal

220

11.8 [8.0]

0.5-50.0

 

10 meals/week

 

São Luís do Tapajós

327

19.9 [12.0]

0.1-94.5

 

13 meals/week

 

Santana do Ituquí

321

4.3 [1.9]

0.4-11.6

 

13 meals/week

Santos, Camara et al 2002

Santana do Ituquí

321

4.3 [2.2]

0.4-12.0

 

12.7 meals/week

 

Aldeia do Lago Grande

316

4.0 [2.1]

0.4-12.0

 

12.0 meals/week

 

Vila do Tabatinga

499

5.4 [3.1]

0.4-17.0

 

10.5 meals/week

Santos, de Jesus et al. 2002

Sai Cinza

324

16.0 [18.9]

4,5-90,4

  

Silva et al. 2004

Jacareacanga

140

(8.0)

0.3-58.5

  
 

Rio-Rato

98

 

0.01-81.4

  
  1. a Percentage of the population with hair mercury levels higher than 10 μg/g.