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Biochar alleviates the toxicity of imidacloprid and silver nanoparticles (AgNPs) to Enchytraeus albidus (Oligochaeta).
Environ Sci Pollut Res Int. 2018 Apr; 25(11):10937-10945.ES

Abstract

The present study investigated the use of biochar for the alleviation of the toxic effects of a nanosilver colloidal dispersion and a chloronicotinyl insecticide. The survival and reproduction of the potworm Enchytraeus albidus were assessed after exposure to imidacloprid and silver nanoparticles (AgNPs). E. albidus was exposed to 0, 25, 50, 100, 200, and 400 mg imidacloprid/kg and 0, 5, 25, 125, and 625 mg Ag/kg for 21 days in 10% biochar amended and non-biochar amended OECD artificial soil. In both exposure substrates, the effects of imidacloprid on survival were significant in the two highest treatments (p < 0.01). No biochar effect was observed as survival was statistically similar in both soils after exposure to imidacloprid. In the case of AgNPs, significant mortality was only observed in the highest AgNP treatments in both the amended and non-amended soils (p < 0.05). Nevertheless, statistically greater survival occurred in the biochar-amended treatment (p < 0.05). Reproduction results showed a more pronounced biochar effect with an EC50 = 22.27 mg imidacloprid/kg in the non-amended soil and a higher EC50 = 46.23 mg imidacloprid/kg in the biochar-amended soil. This indicated a 2-fold decrease in imidacloprid toxicity due to biochar amendment. A similar observation was made in the case of AgNPs where a reproduction EC50 = 166.70 mg Ag/kg soil in the non-amended soil increased to an EC50 > 625 mg Ag/kg soil (the highest AgNP treatment) in the amended soil. This indicated at least a 3.7-fold decrease in AgNPs toxicity due to biochar amendment. Although more studies may be needed to optimize the easing effects of biochar on the toxicity of these chemicals, the present results show that biochar could be useful for the alleviation of the toxic effects of imidacloprid and silver nanoparticles in the soil.

Authors+Show Affiliations

Department of Zoology and Entomology, University of the Free State, Private Bag x13, Phuthaditjhaba, 9866, Republic of South Africa.Department of Zoology and Entomology, University of the Free State, Private Bag x13, Phuthaditjhaba, 9866, Republic of South Africa.Department of Zoology and Entomology, University of the Free State, Private Bag x13, Phuthaditjhaba, 9866, Republic of South Africa.Department of Crop Protection, Agriculture Research Council-Small Grain Institute, Private Bag x29, Bethlehem, 9700, Republic of South Africa.Department of Zoology and Entomology, University of the Free State, Private Bag x13, Phuthaditjhaba, 9866, Republic of South Africa. OtomoPV@ufs.ac.za.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

29397515

Citation

Nyoka, Ngitheni Winnie-Kate, et al. "Biochar Alleviates the Toxicity of Imidacloprid and Silver Nanoparticles (AgNPs) to Enchytraeus Albidus (Oligochaeta)." Environmental Science and Pollution Research International, vol. 25, no. 11, 2018, pp. 10937-10945.
Nyoka NW, Kanyile SN, Bredenhand E, et al. Biochar alleviates the toxicity of imidacloprid and silver nanoparticles (AgNPs) to Enchytraeus albidus (Oligochaeta). Environ Sci Pollut Res Int. 2018;25(11):10937-10945.
Nyoka, N. W., Kanyile, S. N., Bredenhand, E., Prinsloo, G. J., & Voua Otomo, P. (2018). Biochar alleviates the toxicity of imidacloprid and silver nanoparticles (AgNPs) to Enchytraeus albidus (Oligochaeta). Environmental Science and Pollution Research International, 25(11), 10937-10945. https://doi.org/10.1007/s11356-018-1383-x
Nyoka NW, et al. Biochar Alleviates the Toxicity of Imidacloprid and Silver Nanoparticles (AgNPs) to Enchytraeus Albidus (Oligochaeta). Environ Sci Pollut Res Int. 2018;25(11):10937-10945. PubMed PMID: 29397515.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Biochar alleviates the toxicity of imidacloprid and silver nanoparticles (AgNPs) to Enchytraeus albidus (Oligochaeta). AU - Nyoka,Ngitheni Winnie-Kate, AU - Kanyile,Sthandiwe Nomthandazo, AU - Bredenhand,Emile, AU - Prinsloo,Godfried Jacob, AU - Voua Otomo,Patricks, Y1 - 2018/02/04/ PY - 2017/09/13/received PY - 2018/01/24/accepted PY - 2018/2/6/pubmed PY - 2018/12/12/medline PY - 2018/2/5/entrez KW - Agrochemicals KW - Metal nanomaterials KW - Nanotoxicity KW - Oligochaetes KW - Soil remediation SP - 10937 EP - 10945 JF - Environmental science and pollution research international JO - Environ Sci Pollut Res Int VL - 25 IS - 11 N2 - The present study investigated the use of biochar for the alleviation of the toxic effects of a nanosilver colloidal dispersion and a chloronicotinyl insecticide. The survival and reproduction of the potworm Enchytraeus albidus were assessed after exposure to imidacloprid and silver nanoparticles (AgNPs). E. albidus was exposed to 0, 25, 50, 100, 200, and 400 mg imidacloprid/kg and 0, 5, 25, 125, and 625 mg Ag/kg for 21 days in 10% biochar amended and non-biochar amended OECD artificial soil. In both exposure substrates, the effects of imidacloprid on survival were significant in the two highest treatments (p < 0.01). No biochar effect was observed as survival was statistically similar in both soils after exposure to imidacloprid. In the case of AgNPs, significant mortality was only observed in the highest AgNP treatments in both the amended and non-amended soils (p < 0.05). Nevertheless, statistically greater survival occurred in the biochar-amended treatment (p < 0.05). Reproduction results showed a more pronounced biochar effect with an EC50 = 22.27 mg imidacloprid/kg in the non-amended soil and a higher EC50 = 46.23 mg imidacloprid/kg in the biochar-amended soil. This indicated a 2-fold decrease in imidacloprid toxicity due to biochar amendment. A similar observation was made in the case of AgNPs where a reproduction EC50 = 166.70 mg Ag/kg soil in the non-amended soil increased to an EC50 > 625 mg Ag/kg soil (the highest AgNP treatment) in the amended soil. This indicated at least a 3.7-fold decrease in AgNPs toxicity due to biochar amendment. Although more studies may be needed to optimize the easing effects of biochar on the toxicity of these chemicals, the present results show that biochar could be useful for the alleviation of the toxic effects of imidacloprid and silver nanoparticles in the soil. SN - 1614-7499 UR - https://www.unboundmedicine.com/medline/citation/29397515/Biochar_alleviates_the_toxicity_of_imidacloprid_and_silver_nanoparticles__AgNPs__to_Enchytraeus_albidus__Oligochaeta__ L2 - https://dx.doi.org/10.1007/s11356-018-1383-x DB - PRIME DP - Unbound Medicine ER -