Interaction between polychlorinated biphenyls and marine humic substances. Determination of association coefficients

Lara, Rubén; Ernst, W.

doi:10.1016/0045-6535(89)90509-2

Cited by 35 publications

(24 citation statements)

References 25 publications

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“…A combination of all sampling campaigns data highlighted a positive dependence of these two parameters for both lakes, consistent with previous observations. 40,44,59,60 The linear regression slopes were statistically analogous (ANCOVA, p-value = 1.5 × 10 −5 ) for the two studied lakes. The correlation between K p and K ow was also examined for each sampling campaign and is presented in Table S12 of Figure 4) to test for a seasonal trend in the log K p −log K ow dependence.…”

Section: Environmental Science and Technologymentioning

confidence: 99%

Particle-Dissolved Phase Partition of Polychlorinated Biphenyls in High Altitude Alpine Lakes

Nellier

Perga

Cottin

et al. 2015

Environ. Sci. Technol.

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We investigated whether polychlorinated biphenyls (PCBs) partitioning between the dissolved and particulate phases in two high altitude alpine lakes was determined by the quantity, size structure, or composition of suspended particles. Within- and between-lakes differences in water-particulate phase partition coefficient (Kp) were not related to total suspended matter, phytoplankton biomass, or taxonomic composition. Yet, a seasonal relationship between Kp and Kow was detected for both lakes, revealing equilibrium of PCBs partition when lakes were ice covered. On the contrary, PCBs partitioning between particles and water appeared kinetically limited during the open water season. Partition is therefore mainly governed by thermodynamic laws during the ice-covered period, while none of the tested physical or biological parameters seemed to explain the distribution of these particle-reactive contaminants in the open water period. PCBs were always mainly associated with particulate matter, but partitioning within different particulate size-fractions varied between seasons and between years during open water periods. When ice cover is absent, PCBs were mainly adsorbed on microplankton, the largest phytoplanktonic size fraction, which is the least likely to get grazed by pelagic microconsumers.

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Section: Environmental Science and Technologymentioning

confidence: 99%

Particle-Dissolved Phase Partition of Polychlorinated Biphenyls in High Altitude Alpine Lakes

Nellier

Perga

Cottin

et al. 2015

Environ. Sci. Technol.

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“…The magnitudes of the association of PCBs with algal exudates are in a similar range as determined previously for MHS (Lara & Ernst, 1989), extending from about 80% associated PCB for decachlorobiphenyl to 23 % for the pentachlorobiphenyl congener No. 95.…”

Section: Resultsmentioning

confidence: 66%

“…The association coefficients (Ke) and the percentage of PCB in the aqueous system associated with the algal exudates (PAPCB), calculated as described in Lara & Ernst (1989), are shown in Table 1.…”

Section: Resultsmentioning

confidence: 99%

“…SAE and PES were filtered on 0.45 bm Millipore filters previously washed with an aliquot of the sample and used without further treatment. The procedure for the quantification of PCBs and the determination of their association coefficients with algal exudates (Ke) was the same used for dissolved marine humic substances and PCBs as described elsewhere (Lara & Ernst, 1989).…”

Section: Methodsmentioning

confidence: 99%

“…The association of dissolved marine humic substances (MHS) with polychlorinated biphenyls (PCBs) has been studied by Lara & Ernst (1989). However, no investigations have been conducted so far on interactions of algal products with these organic pollutants.…”

Section: Introductionmentioning

confidence: 99%

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Association between exudates of brown algae and polychlorinated biphenyls

1989

Self Cite

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Exudates from the brown algae Caepidium antarcticum and Desmarestia sp. were investigated for their ability to associate with hydrophobic pollutants such as polychlorinated biphenyls (PCBs). The percentage of PCB associated with algal exudates ranged from 79% for decachlorobiphenyl to 23 % for the pentachlorobiphenyl congener No. 95. Exudates from the tested brown algae may therefore alter the bioavailability of PCBs in natural or artificial ecosystems.

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Transport und Verbleib organischer Verbindungen im globalen Rahmen

Ballschmiter

1992

Angewandte Chemie

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Interaction between polychlorinated biphenyls and marine humic substances. Determination of association coefficients

Cited by 35 publications

References 25 publications

Particle-Dissolved Phase Partition of Polychlorinated Biphenyls in High Altitude Alpine Lakes

Particle-Dissolved Phase Partition of Polychlorinated Biphenyls in High Altitude Alpine Lakes

Association between exudates of brown algae and polychlorinated biphenyls

Transport und Verbleib organischer Verbindungen im globalen Rahmen

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