BIOACCUMULATION OF PCBS FROM CONTAMINATED SEDIMENTS

5,64

MB

IN A COASTAL MARNE ECOSYSTEM OF NORTHERN LABRADOR

91

stron

4873

ID

Queen's University

2005

rok

LITERATURE REVIEW .- -1

A. PROPERTES OF PCBs . 4

B. PCB CONTAMINATION 7

C .P CB DYNAMICS AQUATIC SYSTEMS . 9

I . Physicaf Behaviour and Fate 9

7 Bioavailability 9

3 . Bioaccumulation 13

4- Marine PCB Contamination at Sag lek. Labrador 18

III. BIOACCUMULATION OF PCBS FROM SEDIMENTS IN A SUBARCTIC COASTAL MARINE

ECOSYSTEM: 1 . MULTI-TROPHIC LEVEL SURVEY 21

A. INTRODUC~~O.N . 21

B. MATERIALSA ND METHODS. .- ,3,3

I . Site Descriplion ,7, 7

2 Sampfe Colfection . 23

3. Rnalvtical Techniqu ex 26

4 . Cornputarional Methoak and Statistical Analyses . 28

C. RESULTS AND DISCUSSION 3 f

1 . Source: Marine Sediment PCB Contamination 31

2 . Marine lnvertebrates 33

3 . Shorthorn Scufpin . 3.5

4 . Arctic Char . 37

5. Ringed Seal . 39

6 . Seabirk 44

D . CONCLUSIONS50

IV . BIOACCUMULATION OF PCBS FROM SEDIMENTS IN A SUBARCTIC MARINE ECOSYSTEM

.2 . B OTTOM-FEEDING FISH (SHORTHORN SCULPIN ) . , 51

A . INTRODUCT.IO.N 5 1

B . MATERIALS AND METHODS . 53

1. Sample Collection 53

C . RESULTSA ND DISCUSSION. .~~.5. 5

I . Total PCB Concentrations in Shorthorn Sctdpin . 55

4. Congener Composition of PCBs in Sailpin . 64

D . CONCLUSIONS . 7 1

V .G ENERAL DISCUSSION .,,72

LITERATURE CITED . 76