Table B-4. Environmental Levels of Dibenzofurans in Water (ppq)

Chemical

 

Number samples

Number positive samples

Concentration

range

Conc. mean

Location

 

Location description

Samp. year

Ref. no.

Comments

Tetrachlorodibenzofurans (MW=305.98)

2,3,7,8-TCDF

2

2

.022-.026

.024

Eman River, Sweden

PCB contaminated

NR

3

raw surface drinking water
 

1

0

ND(0.7)

NA

Lockport, New York

NR

88

2

raw surface drinking water

TCDFs

22

1

ND-2.6

0.12

New York State

NR

86-88

2

treated surface drinking water
 

1

1

18

18

Lockport, New York

NR

88

2

raw surface drinking water
 

2

2

.21-.23

0.22

Eman River, Sweden

PCB contaminated

NR

3

raw surface drinking water

Pentachlorodibenzofurans (MW=340.42)

1,2,3,7,8-PeCDF

1

1

2.0

2.0

Lockport, New York

NR

88

2

raw surface drinking water

2,3,4,7,8-PeCDF

2

2

.014-.019

.016

Eman River, Sweden

PCB contaminated

NR

3

raw surface drinking water
 

1

0

ND(1.0)

NA

Lockport, New York

NR

88

2

raw surface drinking water

1,2,3,4,8/1,2,3,7,8-PeCDF

2

2

.013-.025

.019

Eman River, Sweden

PCB contaminated

NR

3

raw surface drinking water

PeCDFs

1

1

27

27

Lockport, New York

NR

88

2

raw surface drinking water
 

22

0

ND(0.3-4.0)

NA

New York State

NR

86-88

2

treated surface drinking water
 

2

2

.13-.21

.17

Eman River, Sweden

PCB contaminated

NR

3

raw surface drinking water

Hexachlorodibenzofurans (MW=374.87)

1,2,3,4,7,8-HxCDF

1

1

39

39

Lockport, New York

NR

88

2

raw surface drinking water

1,2,3,6,7,8-HxCDF

1

1

9.2

9.2

Lockport, New York

NR

88

2

raw surface drinking water
 

2

2

.019-.025

.022

Eman River, Sweden

PCB contaminated

NR

3

raw surface drinking water

2,3,4,6,7,8-HxCDF

1

0

ND(1.3)

NA

Lockport, New York

NR

88

2

raw surface drinking water
 

2

1

ND-.027

.014

Eman River, Sweden

PCB contaminated

NR

3

raw surface drinking water

1,2,3,7,8,9-HxCDF

1

0

ND(1.2)

NA

Lockport, New York

NR

88

2

raw surface drinking water
 

2

1

ND-.022

.011

Eman River, Sweden

PCB contaminated

NR

3

raw surface drinking water

1,2,3,4,7,9/1,2,3,4,7,8-HxCDF

2

2

.021-.026

.024

Eman River, Sweden

PCB contaminated

NR

3

raw surface drinking water

HxCDFs

1

1

85

NA

Lockport, New York

NR

88

2

raw surface drinking water
 

22

0

ND(.3-4.4)

NA

New York State

NR

86-88

2

treated surface drinking water
 

2

2

.17-.19

.18

Eman River, Sweden

PCB contaminated

NR

3

raw surface drinking water

Heptachlorodibenzofurans (MW=409.31)

1,2,3,4,6,7,8-HpCDF

1

1

210

210

Lockport, New York

NR

88

2

raw surface drinking water
 

2

2

.083-.13

.11

Eman River, Sweden

PCB contaminated

NR

3

raw surface drinking water

1,2,3,4,7,8,9-HpCDF

2

2

.03-.058

.044

Eman River, Sweden

PCB contaminated

NR

3

raw surface drinking water

HpCDFs

1

1

210

210

Lockport, New York

NR

88

2

raw surface drinking water
 

22

0

ND(.8-6.6)

NA

New York State

NR

86-88

2

treated surface drinking water
 

2

2

.18-.35

.26

Eman River, Sweden

PCB contaminated

NR

3

raw surface drinking water

Octachlorodibenzofurans (MW=444.76)

1,2,3,4,6,7,8,9-OCDF

22

2

ND-0.8

2.45

New York State

NR

86-88

2

treated surface drinking water
 

1

1

230

230

Lockport, New York

NR

88

2

raw surface drinking water
 

2

2

.15-.36

.26

Eman River, Sweden

PCB contaminated

NR

3

raw surface drinking water

Footnote References

NOTES: Summary statistics provided in or derived from references; when reference did not compute mean, one-half the detection limit was used for non-detects. Therefore, it is possible to have mean concentrations greater than the range (e.g., reported detection limit for nondetects greater than the positive sample).

NA = not applicable;

ND = non-detected (limit of detection);

NR = not reported.

Descriptions provided were those given by reference or surmised from study description when not given.

Sources: 2. Meyer, et al. (1989) 3. Rappe, et al. (1989b)