Accumulation of carcinogenic hydrocarbons at the sediment-water interface

Кирсо, У.; Paalme, Lia; Voll, Mary Jane; Urbas, E.; Irha, Natalya

doi:10.1016/0304-4203(90)90079-r

Cited by 15 publications

(5 citation statements)

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“…The total concentration of PAHs in the surface sediment of Donghu Lake ranged from 0.15 to 10.83 mg/kg, whereas the samples from the west part of the lake contained higher levels of PAHs. Kirso et al (13) measured total PAH concentrations in the range of 1.2-3.5 mg/kg in sediments of Finland Bay. Yu (14) reported concentrations ranging from 0.23 to 6.0 mg/kg at Tokyo Bay and estuaries.…”

Section: Resultsmentioning

confidence: 99%

PERSISTENT ORGANIC POLLUTANTS (POPs) IN SURFACE SEDIMENTS OF DONGHU LAKE, WUHAN, HUBEI, CHINA

Hai¹,

Wang²,

Wu³

et al. 2002

Journal of Environmental Science and Health, Part A

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Section: Resultsmentioning

confidence: 99%

PERSISTENT ORGANIC POLLUTANTS (POPs) IN SURFACE SEDIMENTS OF DONGHU LAKE, WUHAN, HUBEI, CHINA

Hai¹,

Wang²,

Wu³

et al. 2002

Journal of Environmental Science and Health, Part A

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“…Pyrene, a four-ring PAH, was selected as the model PAH compound in the present study because of the following reasons: (1) pyrene is often found at high concentrations in sediments, water and biota of PAHcontaminated water (Johnson et al, 1985;Kirso et al, 1990); (2) although pyrene is not a carcinogenic PAH, it has shown to be a potential mutagen and the toxicity of pyrene is also intermediate compared to other PAH compounds (Warshawsky et al, 1995;Weinstein & Troll, 1977); and (3) no information is available on antioxidant response in microalgal species to pyrene.…”

Section: Culturementioning

confidence: 99%

Antioxidant responses of microalgal species to pyrene

Lei

Wong

et al. 2006

J Appl Phycol

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The antioxidant response of four freshwater microalgal species, Chlorella vulgaris Beij., Scenedesmus platydiscus (G. M. Smith) Chod., Scenedesmus quadricauda(Turp.) Bréb., and Selenastrum capricornutum Printz without pyrene addition (control) and at two pyrene concentrations (0.1 and 1.0 mgL −1 ) were investigated. Under the control condition, the values of the antioxidant parameters differed significantly among species and the difference was seemed not to be related to their susceptibility to pyrene. The antioxidant response to pyrene treatments also varied from species to species. Pyrene led to a significant increase in total glutathione (GSH) content in all species except C. vulgaris, a species did not exhibit any ability to metabolize pyrene. The glutathione-S-transferase (GST) activities also remained unchanged in pyrene treated C. vulgaris, increased greatly in S. platydiscus and Se. capricornutum (the two species with higher pyrene metabolism ability), but inhibited remarkably in S. quadricauda (the only species sensitive to pyrene toxicity). On the other hand, the glutathione reductase (GR) activities increased in C. vulgaris but remained at a similar level as the control in the other three species. The malondialdehyde (MDA) content, an indicator of lipid peroxidation, declined in S. quadricauda but showed no significant change in the other three species. The activities of glutathione peroxidase (GPX), superoxide dismutase (SOD) and catalase (CAT) in pyrene treated cells remained almost the same as the controls for all microalgal species. Results suggested that the alterations of antioxidant systems in microalgae might not be useful indicators of pyrene exposure but pyrene-enhanced GSH metabolism might be important in pyrene biotransformation.

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“…To obtain information on the spatial and temporal variations in PAH pollution, a complex study of PAH concentration was made in the ecosystems (suspended matter, bottom sediments, biota) of the Baltic, Bering, Chukchi, and South China seas and the Tropical Pacific (Irha et al, , 1993Kirso et al, 1990;Urbas et al, 1992). Highly varying bioconcentration factors, ranging from 10 to 10, were found for various PAHs and different aquatic organisms .…”

Section: Distribution In Marine Environmentmentioning

confidence: 99%