2014
DOI: 10.1016/j.ecoenv.2013.10.017
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Enantioseletive bioaccumulation and metabolization of diniconazole in earthworms (Eiseniafetida) in an artificial soil

Abstract: a b s t r a c tDegradation and enantioselective bioaccumulation of diniconazole in earthworms (Eiseniafetida) in artificial soil was investigated using liquid chromatography-tandem mass spectrometry (LC-MS/MS) method under laboratory condition. Three exposure concentrations (1 mg/kg, 10 mg/kg and 25 mg/kg) of diniconazole in soil (dry weight) to earthworms were used. The uptake kinetics fitted the first-order kinetics well. The bioaccumulation factors (BAF) of R, S isomers were 6.6046 and 8.5115 in 25 mg/kg do… Show more

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Cited by 33 publications
(7 citation statements)
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“…When the uptake and elimination reached steady state during the accumulation phase (i.e., t = ∞), Eq. may be reduced to: italicCitalicworm=KitalicCitalicsoil K=CwormCsoilwhen steady state was reached, according to Eqs.…”
Section: Methodsmentioning
confidence: 99%
See 1 more Smart Citation
“…When the uptake and elimination reached steady state during the accumulation phase (i.e., t = ∞), Eq. may be reduced to: italicCitalicworm=KitalicCitalicsoil K=CwormCsoilwhen steady state was reached, according to Eqs.…”
Section: Methodsmentioning
confidence: 99%
“…They are appropriate model organisms for bioavailability as they live in close contact with the soil, have a thin and permeable cuticle, and also consume large amounts of soil. Earthworms can thus be considered model organisms for assessing the potential biological effect of the chemicals released into the environment . Several articles have been reported that earthworms were utilized in both toxicity and bioaccumulation studies, but until now there is no report about the enantioselective transfer or bioaccumulation of furalaxyl from soil to earthworm and the toxicity of furalaxyl on earthworm.…”
Section: Introductionmentioning
confidence: 99%
“…Uptake of fipronil by E. foetida from the soils was described by the two‐compartment model . The uptake kinetic parameters and the uptake curve were performed using the following model equations: dCworm/dt=k1Csoilk2Cworm Cworm=k1Csoilk21expk2t0<t<tnormalc BAFk=k1k2 …”
Section: Methodsmentioning
confidence: 99%
“…When steady state is reached during the uptake phase (i.e. t = ∞), equation (2) may be reduced to Cworm=k1k2Csoil BAFk=CwormCsoil=k1k2 …”
Section: Methodsmentioning
confidence: 99%
“…R -diniconazole has strong bactericidal activity to Ascomycotina, Basidiomycotina, and Deuteromycotina; and S -diniconazole enantiomer is a plant growth regulator. , For instance, the antifungal activity of R -(−)-diniconazole to Ustilago maydis was more than 300 times higher than S -(−)-diniconazole, while S -(−)-diniconazole exhibited stronger plant growth regulating activity on cucumber seedlings . Some studies reported that S -diniconazole was preferentially enriched in yellow mealworm (Tenebrio Molitor Larvae), earthworms (Eisenia fetida), the blood and heart of quails ( Coturnix ), and the plasma of rabbits ( Leporidae ), and S -diniconazole was preferentially degraded in the liver and kidney of quails . The enantioselectivity of diniconazole was not observed during the bioaccumulation in zebrafish (Brachydanio rerio var) .…”
Section: Introductionmentioning
confidence: 99%