Ecotoxicity of siloxane D5 in soil

Velicogna, Jessica R.; Ritchie, Ellyn; Princz, Juliska; Lessard, Marie-Eve; Scroggins, Richard P.

doi:10.1016/j.chemosphere.2011.11.064

Cited by 36 publications

(22 citation statements)

References 15 publications

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“…Plant ( Hordeum vulgare [barley] and Trifolium pratense [red clover]) and soil invertebrate ( Eisenia andrei [earthworm] and Folsomia candida [springtail]) toxicity tests were conducted by Velicogna et al . Among these species, adverse effects were observed only for barley root biomass, yielding an NOEC of 77 µg/g dry weight; none of the other terrestrial species showed any response at the concentrations tested.…”

Section: Resultsmentioning

confidence: 99%

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Characterization of ecological risks from environmental releases of decamethylcyclopentasiloxane (D5)

Fairbrother

Burton

Klaine

et al. 2015

Enviro Toxic and Chemistry

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Decamethylcyclopentasiloxane (D5) is used in personal care products and industrial applications. The authors summarize the risks to the environment from D5 based on multiple lines of evidence and conclude that it presents negligible risk. Laboratory and field studies show that D5 is not toxic to aquatic organisms or benthic invertebrates up to its solubility limit in water or porewater or its sorptive capacity in sediment. Comparison of lipid-normalized internal concentrations with measured concentrations in benthos indicates that field-collected organisms do not achieve toxic levels of D5 in their tissues, suggesting negligible risk. Exposure to D5 resulted in a slight reduction of root biomass in barley at test concentrations 2 orders of magnitude greater than measured D5 levels in biosolids-amended soils and more than twice as high as the maximum calculated sorptive capacity of the soil. No effects were observed in soil invertebrates exposed to similar concentrations, indicating that D5 poses a de minimis risk to the terrestrial environment. High rates of metabolism and elimination of D5 compared with uptake rates from food results in biodilution in the food web rather than biomagnification, culminating in de minimis risk to higher trophic level organisms via the food chain. A fugacity approach substantiates all conclusions that were made on a concentration basis. Environ Toxicol Chem 2015;34:2715-2722. © 2015 SETAC

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Section: Resultsmentioning

confidence: 99%

“…In most cases, the fugacities are many times less than this maximum. [47]. Among these species, adverse effects were observed only for barley root biomass, yielding an NOEC of 77 mg/g dry weight; none of the other terrestrial species showed any response at the concentrations tested.…”

Section: Fugacity Approachmentioning

confidence: 86%

Characterization of ecological risks from environmental releases of decamethylcyclopentasiloxane (D5)

Fairbrother

Burton

Klaine

et al. 2015

Enviro Toxic and Chemistry

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“…In other words, the sorbed D 5 accounted for only 19% of the total mass of D 5 in the soil at the lowest non-zero dose level, 14% of the total mass of D 5 in the soil at the reported IC50 for barley root, 4% at the IC50 for Springtail juvenile production, and <0.8% at the IC50 for earthworm juvenile production. 68 Thus, the observed biotic response for D 5 was most likely associated with neat D 5 , not the sorbed D 5, in soil. When designing ecotoxicity tests it is essential to ensure that saturation conditions in the test exposure phase of water, soil or sediment are not exceeded.…”

Section: Environmental Implicationsmentioning

confidence: 95%

Critical Review and Interpretation of Environmental Data for Volatile Methylsiloxanes: Partition Properties

Kozerski

Mackay

2014

Environ. Sci. Technol.

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Volatile methylsiloxanes (VMS) enter the environment through industrial activities and the use of various consumer products. Reliable measurements of environmental partition properties for these compounds are critical for accurate prediction of their environmental fate, distribution, transport, exposure and potential effects. In this study, the measured partition properties including air/water (K(AW)), octanol/water (K(OW)), and octanol/air partitioning coefficients (K(OA)), soil organic carbon/water distribution coefficient (K(OC)), and biological medium/fluid partition coefficients, and their temperature dependence were critically reviewed. Based on these results, organosilicon compounds such as methylsiloxanes are expected to behave differently in the environment compared to conventional hydrophobic environmental contaminants, as a result of their inherent characteristics related to molecular size and capacity for different types of molecular interactions that control partitioning. The differences are critical and need to be taken into consideration in environmental exposure and risk analyses of these compounds.

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“…In this particular study, Sparham et al (2008) observed the disposal of volatile dimethylsiloxanes (D5) at trace levels through WWTP discharge, but there is a general lack of information about their occurrence in wastewater discharges and into the aquatic environment. Although the toxicological behavior of these compounds is still poorly studied, several works have indicated that these compounds can cause adverse toxicological effects on wildlife (Velicogna et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Occurrence of linear and cyclic volatile methylsiloxanes in wastewater, surface water and sediments from Catalonia

Sanchís

Martı́nez

Ginebreda

et al. 2013

Science of The Total Environment

110

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Ecotoxicity of siloxane D5 in soil

Cited by 36 publications

References 15 publications

Characterization of ecological risks from environmental releases of decamethylcyclopentasiloxane (D5)

Characterization of ecological risks from environmental releases of decamethylcyclopentasiloxane (D5)

Critical Review and Interpretation of Environmental Data for Volatile Methylsiloxanes: Partition Properties

Occurrence of linear and cyclic volatile methylsiloxanes in wastewater, surface water and sediments from Catalonia

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