Identification of water soluble and particle bound compounds causing sublethal toxic effects. A field study on sediments affected by a chlor-alkali industry

Bosch, Carme; Olivares, Alba; Faria, Melissa; Navas, José M.; Olmo, Iván del; Grimalt, Joan O.; Piña, Benjamı́n; Barata, Carlos

doi:10.1016/j.aquatox.2009.05.011

Cited by 51 publications

(24 citation statements)

References 64 publications

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“…The elutriates were prepared 24 h before the start of the bioassay according to the procedure reported by Bosch et al [18]. One hundred grams of fresh sediment was gently mixed to 1 L of artificial water (ASTM hard) [19] in a 1:10 wet-sediment to liquid volumetric ratio during 24 h at 10 rpm in a rotatory wheel at 20 • C. Then, the sediment-water slurry was left to settle for 24 h, and the overlaying water was filtered through a glass microfiber (0.7 m; Waterman, England) to obtain the filtered elutriate fraction.…”

Section: Sediment Elutriate Preparationmentioning

confidence: 99%

Thyroid hormone disrupting activities of sediment from the Guanting Reservoir, Beijing, China

Ren

et al. 2014

Journal of Hazardous Materials

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h i g h l i g h t s• Yeast bioassays were used to evaluate the TR disrupting activities of the sediments.• The organic extracts showed TR antagonistic activities.• The elutriates also significantly antagonized the TR.• The causes of toxicity in the elutriates appear to be partly related to the heavy metals. a r t i c l e i n f o a b s t r a c tIn the present study, yeast bioassays were used to evaluate and characterize the thyroid receptor (TR) disrupting activities of the organic extracts and elutriates of the sediments from the Guanting Reservoir, Beijing, China. An accelerated solvent extraction was used to separate the organic extracts, which were subjected to a yeast bioassay. The organic extracts could affect thyroid hormone signaling by decreasing the binding of the thyroid hormone. The TR antagonistic activity equivalents (TEQ bio ) referring to amiodarone hydrochloride were calculated and the observed TEQ bio-organic extracts ranged from 25.4 ± 3.7 to 176.9 ± 18.0 g/g. Elutriate toxicity tests using the modified yeast bioassay revealed that the elutriates also significantly antagonized the TR, with the TEQ bio-elutriates ranging from N.D. to 7.8 ± 0.8 g/L. To characterize the toxic compounds, elutriates were extracted by using a C18 cartridge or treated with ethylenediaminetetraacetic acid (EDTA, 30 mg/L). The results suggested that the addition of EDTA eliminated over 74.3% of the total effects, and the chemical analysis revealed that heavy metals, some of which exhibited TR disrupting potency, for example Zn and Cd, were detectable with higher concentrations in the elutriates. Thus, the cause(s) of toxicity in the elutriate appear to be partly related to the heavy metals.

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Section: Sediment Elutriate Preparationmentioning

confidence: 99%

Thyroid hormone disrupting activities of sediment from the Guanting Reservoir, Beijing, China

Ren

et al. 2014

Journal of Hazardous Materials

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“…Laboratory studies have also observed increased rates of contaminant (polycyclic aromatic hydrocarbon [PAH] and metals) uptake when sediments are resuspended [46,[145][146][147]. Daphnia mortality was increased through ingestion of resuspended contaminated particles and the internal release of bound contaminants [76,145,148]. In situ exposures of amphipods and daphnids during agricultural runoff events showed that TSS-associated pesticides caused acute toxicity, whereas clean TSS or low-flow conditions were not toxic [149].…”

Section: Suspended Solids and Resuspended Sedimentsmentioning

confidence: 99%

Assessing contaminated sediments in the context of multiple stressors

Burton

Johnston

2010

Enviro Toxic and Chemistry

144

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Abstract-Sediments have a major role in ecosystem functioning but can also act as physical or chemical stressors. Anthropogenic activities may change the chemical constituency of sediments and the rate, frequency, and extent of sediment transport, deposition, and resuspension. The importance of sediments as stressors will depend on site ecosystem attributes and the magnitude and preponderance of co-occurring stressors. Contaminants are usually of greater ecological consequence in human-modified, depositional environments, where other anthropogenic stressors often co-occur. Risk assessments and restoration strategies should better consider the role of chemical contamination in the context of multiple stressors. There have been numerous advances in the temporal and spatial characterization of stressor exposures and quantification of biological responses. Contaminated sediments causing biological impairment tend to be patchy, whereas more pervasive anthropogenic stressors, such as alterations to habitat and flow, physical disturbance, and nutrient addition, may drive large-scale ecosystem responses. A systematic assessment of relevant ecosystem attributes and reference conditions can assist in understanding the importance of sediments in the context of other stressors. Experimental manipulations then allow for the controlled study of dominant stressors and the establishment of causal links. This approach will result in more effective management of watersheds and waterways. Environ. Toxicol. Chem. 2010;29:262529: -264329: . # 2010

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“…Marques et al (2009) found that the behaviour of the earthworm Esenia andrei was affected under VIPER Ò exposures in soils, the formulated product being even more repulsive for E. andrei than the active ingredients benzofenap and clomazone. In our study, predicted TU, conductivity and suspended solids were at the upper tolerance range of the studied species (Barata et al 2006(Barata et al , 2009 and other unmeasured pesticides could also be present (Kuster et al 2008). Thus, many factors could have contributed to the observed toxicity of water samples.…”

Section: Ecotoxicological Responsesmentioning

confidence: 94%

“…Acute D. magna tests were conducted in accordance with OECD guidelines (OECD/OCDE 2004). D. magna post exposure feeding inhibition were carried out with \24 h old juveniles obtained from 15 to 30 days old gravid females following previous procedures (Bosch et al 2009;Barata et al 2008) with only minor modifications. Groups of 70-80 juveniles were exposed to unfiltered water collected from each sampling point during 24 h, in amber glass bottles of 600 ml with continuous orbital agitation (SCTR4 stuart) at 1 rpm for 24 h and 20 ± 1°C, in order to maintain suspension of particles.…”

Section: Organisms and Toxicity Testingmentioning

confidence: 99%

“…Post-exposure feeding responses in Daphnia magna have also been used in laboratory and field studies to assess sublethal effects of toxic chemicals within industrial, domestic and agricultural complex effluents (Mc William and Baird 2002;Barata et al 2007;Damásio et al 2008;Bosch et al 2009). Feeding rates in D. magna are physiologically linked with population growth rates (Barata and Baird 2000) and ecologically with top-down control of phytoplankton by zooplankton grazers (Sommer et al 2003).…”

Section: Introductionmentioning

confidence: 98%

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Ecotoxicological effects of rice field waters on selected planktonic species: comparison between conventional and organic farming

et al. 2010

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The aim of this study was to assess the ecotoxicological effects of water coming from untreated organic and conventional rice field production areas in the Ebro Delta (Catalonia, Spain) treated with the herbicides oxadiazon, benzofenap, clomazone and bensulfuron-methyl and the fungicides carbendazim, tricyclazole and flusilazole. Irrigation and drainage channels of the study locations were also included to account for potential toxic effects of water coming in and out of the studied rice fields. Toxicity tests included four species (Pseudokirchneriella subcapitata, Desmodesmus subcapitatus, Chlorella vulgaris and Daphnia magna), three endpoints (microalgae growth, D. magna mortality and feeding rates), and two trophic levels: primary producers (microalgae) and grazers (D. magna). Pesticides in water were analyzed by solid phase extraction-liquid chromatography-electrospray-tandem mass spectrometry (LC-ESI-MS/MS). Negative effects on algae growth and D. magna feeding rates were detected mainly after application of herbicides and fungicides, respectively, in the conventional rice field. Results indicated that most of the observed negative effects in microalgae and D. magna were explained by the presence of herbicides and fungicides. The above mentioned analyses also denoted an inverse relationship between phytoplankton biomass measured as chlorophyll a and herbicides. In summary, this study indicates that in real field situations low to moderate levels of herbicides and fungicides have negative impacts to planktonic organisms and these effects seem to be short-lived.

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Identification of water soluble and particle bound compounds causing sublethal toxic effects. A field study on sediments affected by a chlor-alkali industry

Cited by 51 publications

References 64 publications

Thyroid hormone disrupting activities of sediment from the Guanting Reservoir, Beijing, China

Thyroid hormone disrupting activities of sediment from the Guanting Reservoir, Beijing, China

Assessing contaminated sediments in the context of multiple stressors

Ecotoxicological effects of rice field waters on selected planktonic species: comparison between conventional and organic farming

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