FOR 1536: INTERNANO: Mobility, Aging and Functioning of Engineered Inorganic Nanoparticles at the Aquatic-Terrestrial Interface

INTERNANO侧重于与河漫滩土壤中河流-表土-地下水通道相关的过程。这个高度敏感的水陆生态系统界面区是环境转化过程的热点。INTERNANO的总体目标是系统地了解控制工程无机纳米颗粒（EINP）在水生生物膜和无脊椎动物以及通过土壤运输方面老化和生物功能的相关环境过程。在这种情况下，我们将老化定义为导致EINP在环境中转变而不完全失去原始纳米颗粒相的过程实体（Schaumann等人提交）。第一阶段的INTERNANO结果提供了水陆界面EINP老化过程及其对EINP功能影响的一致信息。在第二阶段，INTERNANO将分别以热力学稳定的金属（Au）和氧化（TiO2）纳米粒子（NP）以及其次级产品Ag2S NP中不太稳定的Ag NP和NP为例，对所产生的知识进行补充和系统化。我们的目标是在确定一组可访问的EINP性质的基础上，推断更一般的金属和氧化EINP知识转移的基础。因此，我们将在与洪泛区系统相关的路径和条件下，对更大的EINP集进行举例检验我们的假设。

INTERNANO focuses on processes relevant for the river-topsoil-groundwater pathway in floodplain soils. This highly sensitive interfacial zone between aquatic and terrestrial ecosystems serves as hotspot of environmental transformation processes. The overall aim of INTERNANO is to generate systematic understanding of the relevant environmental processes controlling aging and biological functioning of engineered inorganic nanoparticles (EINP) with respect to aquatic biofilms and invertebrates and transport through soil. In this context, we define aging as the entity of processes leading to transformation of EINP in the environment without complete loss of the original nanoparticle phase (Schaumann et al. submitted).The INTERNANO results of the first phase provide congruent information on aging processes of EINP in the aquatic-terrestrial interface and their effects on EINP functioning. In the second phase, INTERNANO will complement and systematize the generated knowledge using the example of the thermodynamically stable metallic (Au) and oxidic (TiO2) nanoparticles (NP), respectively, as well as the less stable Ag NP and NP of its secondary product, i.e. Ag2S NP. We aim at deducing cornerstones for knowledge transfer to metallic and oxidic EINP in more general, based on the determination a set of accessible EINP properties. Thereby, we will test our hypotheses exemplarily for pathways and under conditions relevant for the floodplain system also for a larger set of EINP.