Details

Autor(en) / Beteiligte

• Schlich, Karsten
• Beule, Lukas
• Hund-Rinke, Kerstin

Titel

Single versus repeated applications of CuO and Ag nanomaterials and their effect on soil microflora

Ist Teil von

• Environmental pollution (1987), 2016-08, Vol.215, p.322-330

Ort / Verlag

England: Elsevier Ltd

Erscheinungsjahr

2016

Quelle

MEDLINE

Beschreibungen/Notizen

• Nanomaterials enter the terrestrial environment via the repeated application of sludge to soils over many years. The goal of this investigation was to compare the effects of CuO and Ag nanomaterials on soil microorganisms after a single application and after repeated applications ultimately resulting in the same test concentrations. The effect on soil microorganisms was determined using the ammonium oxidation (ISO 15685), enzymatic activity patterns (ISO 22939) and MicroResp™ tests on days 28, 56 and 84. The comparability of single and repeated applications of ion-releasing nanomaterials depended on the test endpoint and duration. No significant differences between single and repeated applications were observed when testing nitrifying microorganisms and exoenzymes, but differences were observed in the substrate-induced respiration test. The three test systems used together provide more comprehensive information about the impact of different nanomaterials on the soil microflora and its diversity. •Single and repeated applications of Ag and CuO nanomaterials were compared.•Enzymatic activity and microbial diversity was affected by the nanomaterials.•Toxicity of Ag-NMs exceeded the CuO-NMs toxicity on the soil microflora.•Depending on test endpoint and duration results on toxicity differed.•The three test systems provide information about the impact on the soil microflora. For both nanomaterials differences between single and repeated applications were found, dependent on the test system, test endpoint and the test duration.