Soil pH effects on the comparative toxicity of dissolved zinc, non-nano and nano ZnO to the earthworm<i>Eisenia fetida</i>

Heggelund, Laura Roverskov; Ortiz, María Díez; Lofts, Stephen; Lahive, Elma; Jurkschat, Kerstin; Wojnarowicz, Jacek; Cedergreen, Nina; Spurgeon, David J.; Svendsen, Claus

doi:10.3109/17435390.2013.809808

Cited by 118 publications

(110 citation statements)

References 40 publications

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“…Addition of ZnO-NPs and ZnO bulk increased soil pH by 0.6 and 0.8, respectively, in agreement with other investigators (Kool et al 2011;Zhao et al 2013;Heggelund et al 2014), although the differences decreased with time. This decrease could be associated with the slight increase of Zn 2?…”

Section: Resultssupporting

confidence: 92%

“…This fact seems to indicate that the size and high specific surface of the NPs did not increase toxicity with respect to bulk material and that the toxicity may be due to the release of Zn ions at a rate lower than that of the salt. In this study, the fecundity of E. fetida in the ZnO-NP group was similar to the results by Heggelund et al (2014) and Hooper et al (2011). Moreover, these investigators found that ZnCl 2 salt caused much more inhibition of fecundity than did NPs.…”

Section: Toxic Effects On Earthwormssupporting

confidence: 89%

“…This result was expected based on results from previous studies (Heggelund et al 2014;Lock and Janssen 2003;Hooper et al 2011) where Eisenia sp. adults were exposed to Zn (in artificial soil from ZnO-NPs, ZnO bulk, and ZnCl 2 salt) in a concentration range from 250 to 10,000 mg kg -1 without lethal effects.…”

Section: Toxic Effects On Earthwormssupporting

confidence: 83%

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Toxicity of ZnO Nanoparticles, ZnO Bulk, and ZnCl2 on Earthworms in a Spiked Natural Soil and Toxicological Effects of Leachates on Aquatic Organisms

García‐Gómez¹,

Babín²,

Obrador³

et al. 2014

Arch Environ Contam Toxicol

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The present study assessed the uptake and toxicity of ZnO nanoparticles (NPs), ZnO bulk, and ZnCl 2 salt in earthworms in spiked agricultural soils. In addition, the toxicity of aqueous extracts to Daphnia magna and Chlorella vulgaris was analyzed to determine the risk of these soils to the aquatic compartment. We then investigated the distribution of Zn in soil fractions to interpret the nature of toxicity. Neither mortality nor differences in earthworm body weight were observed compared with the control. The most sensitive end point was reproduction. ZnCl 2 was notably toxic in eliminating the production of cocoons. The effects induced by ZnO-NPs and bulk ZnO on fecundity were similar and lower than those of the salt. In contrast to ZnO bulk, ZnO-NPs adversely affected fertility. The internal concentrations of Zn in earthworms in the NP group were greater than those in the salt and bulk groups, although bioconcentration factors were consistently \1. No relationship was found between toxicity and internal Zn amounts in earthworms. The results from the sequential extraction of soil showed that ZnCl 2 displayed the highest availability compared with both ZnO. Zn distribution was consistent with the greatest toxicity showed by the salt but not with Zn body concentrations. The soil extracts from both ZnO-NPs and bulk ZnO did not show effects on aquatic organisms (Daphnia and algae) after short-term exposure. However, ZnCl 2 extracts (total and 0.45-lm filtered) were toxic to Daphnia.

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Section: Resultssupporting

confidence: 92%

Section: Toxic Effects On Earthwormssupporting

confidence: 89%

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Toxicity of ZnO Nanoparticles, ZnO Bulk, and ZnCl2 on Earthworms in a Spiked Natural Soil and Toxicological Effects of Leachates on Aquatic Organisms

García‐Gómez¹,

Babín²,

Obrador³

et al. 2014

Arch Environ Contam Toxicol

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“…Synthetic surfactant-free P99/30nm NanoSun ZnO nanoparticles (ZnONPs, purity 99.5%, specific surface area: 38 m 2 /g, density: 5,52 ±0.05 g/cm 3 , zeta potential in DI water: 20.7 ±2.0 mV (Heggelund et al 2013)) were obtained from Microniser Pty Ltd (Dandenong, Australia). NanoSun P99/30 ZnO, which is manufactured by milling, has no coatings or surface modifications and is close to spherical in shape.…”

Section: Preparation Of Znonpsmentioning

confidence: 99%

Metalloproteins and phytochelatin synthase may confer protection against zinc oxide nanoparticle induced toxicity in Caenorhabditis elegans

Polak

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Jurkschat

et al. 2014

Comparative Biochemistry and Physiology Part C: Toxicology &

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Spurgeon, David J.; Sturzenbaum, Stephen R.. 2014. Metalloproteins and phytochelatin synthase may confer protection against zinc oxide nanoparticle induced toxicity in Caenorhabditis elegansContact CEH NORA team at noraceh@ceh.ac.ukThe NERC and CEH trademarks and logos ('the Trademarks') are registered trademarks of NERC in the UK and other countries, and may not be used without the prior written consent of the Trademark owner. suggesting that the nominal exposure to pure ZnONPs represents in vivo, at best, a mixture exposure of ionic zinc and nanoparticles. Nevertheless, the analyzes provided evidence that the metallothioneins (mtl-1 and mtl-2), the pytochelatin synthase (pcs-1) and an apoptotic marker (cep-1) were transcriptionally activated. In addition, the DCFH-DA assay provided in vitro evidence of the oxidative potential of ZnONPs in the metal exposure sensitive triple mutant.Raman spectroscopy highlighted that the biomolecular phenotype changes significantly in the metal sensitive knockout worm upon ZnONP exposure, suggesting that these metalloproteins are instrumental in the protection against cytotoxic damage. Finally, ZnONP exposure was shown to decrease growth and development, reproductive capacity and lifespan, effects which were amplified in the triple knockout. By combining diverse toxicological strategies, we identified that individuals (genotypes) housing mutations in key metalloproteins are more susceptible to ZnONP exposure, which underlines the importance of fully functional metalloproteins to minimize ZnONP induced toxicity.

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“…Ecotoxicological screening of the influence of nanoparticles of zinc on representatives of soil organisms has shown that Zn nanoparticles are more toxic than ZnCl 2 , and according to the authors it is related to the influence of pH on dissolution of the zinc in the substrate (Heggelund et al, 2014).…”

Section: Wwwccsenetorg/masmentioning

confidence: 99%

Impact of Zn Nanoparticles on Growth, Survival and Activity of Antioxidant Enzymes in Eisenia Fetida

Лебедев¹,

Yausheva²,

Galaktionova³

et al. 2015

MAS

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Biotesting of nanomaterials assumes greater significance and includes various biological models. The research objective is to study the influence of different concentrations of nanoparticles (NP) of Zinc (Zn) on propagation, survival and activity of antioxidatic enzymes of metal in Eisenia fetida in artificial soil (AS) and microcrystalline cellulose (MCC). Zn nanoparticles in size of 90.7±0.3 nМ, Z-potential 25±0,5мV have been used for the analysis. Artificial soil and microcrystalline cellulose were used as substrates for the study. Zn nanoparticles in high concentrations (from 500 to 1000 mg/kg) cause immobilization of 60% of earthworms within 24 hours. The highest accumulation of metal in earthworms and high mortality were registered at a concentration of 500 mg/kg in microcrystalline cellulose and at 1000 mg/kg in artificial soil.It was established that after the increase in concentration from 50 to 500 mg/kg the activity of GPx and SOD in two substrates increases. The highest activity occurs when Zn nanoparticles have concentration of 500 mg/kg. The activity of catalase in worms reduced at the exposition in MCC, but it increased after increasing dosage of Zn NPs in the artificial soil.The study demonstrates that Zn nanoparticles in dose of 500 mg/kg induced the highest toxical effect. It was proven by behavioral reactions, growth characteristics and indices of enzymatic activity in organism of redworm. Based on the obtained data, substrate from microcrystalline cellulose can be used as experimental.

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Soil pH effects on the comparative toxicity of dissolved zinc, non-nano and nano ZnO to the earthwormEisenia fetida

Cited by 118 publications

References 40 publications

Toxicity of ZnO Nanoparticles, ZnO Bulk, and ZnCl2 on Earthworms in a Spiked Natural Soil and Toxicological Effects of Leachates on Aquatic Organisms

Toxicity of ZnO Nanoparticles, ZnO Bulk, and ZnCl2 on Earthworms in a Spiked Natural Soil and Toxicological Effects of Leachates on Aquatic Organisms

Metalloproteins and phytochelatin synthase may confer protection against zinc oxide nanoparticle induced toxicity in Caenorhabditis elegans

Impact of Zn Nanoparticles on Growth, Survival and Activity of Antioxidant Enzymes in Eisenia Fetida

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