Till sidans topp

Sidansvarig: Webbredaktion
Sidan uppdaterades: 2012-09-11 15:12

Tipsa en vän
Utskriftsversion

Passive partitioning of p… - Göteborgs universitet Till startsida
Webbkarta
Till innehåll Läs mer om hur kakor används på gu.se

Passive partitioning of polychlorinated biphenyls between seawater and zooplankton, a study comparing observed field distributions to equilibrium sorption experiments

Artikel i vetenskaplig tidskrift
Författare A. Sobek
G. Cornelissen
Peter Tiselius
O. Gustafsson
Publicerad i Environmental Science & Technology
Volym 40
Nummer/häfte 21
Sidor 6703-6708
ISSN 0013-936X
Publiceringsår 2006
Publicerad vid Institutionen för marin ekologi
Sidor 6703-6708
Språk en
Länkar dx.doi.org/10.1021/es061248c S0013-...
Ämnesord MARINE FOOD-WEB, PERSISTENT ORGANIC POLLUTANTS, OPEN BALTIC SEA, WATER, BIOMAGNIFICATION, PCBS, BIOACCUMULATION, COEFFICIENTS, CHEMICALS, SEDIMENT
Ämneskategorier Ekologi

Sammanfattning

From previous studies, it remains unclear whether polychlorinated biphenyls (PCBs) are biomagnified in zooplankton or if concentrations are simply governed by passive partitioning. In this study, in the Gullmar Fjord on the Swedish west coast, field-determined lipid-normalized partition coefficients (log K-lip) were compared to equilibrium partition coefficients from laboratory sorption experiments with dead and preserved zooplankton. There was no significant difference between the linear regressions of log K-lip-log K-ow (analysis of covariance [ANCOVA], p < 0.05) for field and laboratory-determined partition coefficients, supporting passive partitioning being the dominant uptake pathway for PCBs in the Gullmar Fjord zooplankton. The field-observed partition coefficients were also suggestive of passive partitioning, as all field-log K-lip-log K-ow regressions were significant (p < 0.05, r(2) = 0.74-0.95) and apparently linear. Further, there was generally no positive correlation between apparent biomagnification factors (BMF; concentration in zooplankton [pg/kgoc]/concentration in phytoplankton [pg/kgoc]) and trophic level (on the basis of delta N-15). The in-situ organic carbon (-oc)-normalized concentrations in zooplankton (> 200 mu m) were not statistically different from oc-normalized concentrations in phytoplankton (0.7-50 mu m), which supports the absence of significant biomagnification.

Sidansvarig: Webbredaktion|Sidan uppdaterades: 2012-09-11
Dela:

På Göteborgs universitet använder vi kakor (cookies) för att webbplatsen ska fungera på ett bra sätt för dig. Genom att surfa vidare godkänner du att vi använder kakor.  Vad är kakor?