聚苯乙烯纳米颗粒是环境危害研究中研究最多的纳米塑料类型。目前尚不清楚纳米塑料颗粒是否对水生生物造成危害。因此，我们的目的是调查现有研究和其中提供的数据在数据完整性方面是否可靠。我们以水蚤为例。以聚苯乙烯纳米塑料(nanoPS)危害评估为目的的研究。首先,应用了一组最近提出的纳米塑料生态毒性研究的质量标准。所有类型的纳米塑料和不同的测试生物的这些相当一般的标准，第二步,专门为水蚤属物种量身定制和精制。和nanoPS。最后,通过设置强制性(高重要性)和合意(中等重要性)标准并定义通过评估的阈值,建立了评分系统.在现有的关于nanoPS对水蚤的生态毒性的研究中。（n=38），只有18%的人通过了危险评估中的可用性评估。通过评估的少数研究无法得出有关nanoPS潜在危害的结论，因为研究之间没有达成共识。我们发现的最大挑战是数据报告，因为只有少数研究提供了完整的危险评估数据。
Polystyrene nanoparticles are the most investigated type of nanoplastics in environmental hazard studies. It remains unclear whether nanoplastic particles pose a hazard towards aquatic organisms. Thus, it was our aim to investigate whether the existing studies and data provided therein are reliable in terms of data completeness. We used the example of Daphnia spp. studies for the purpose of polystyrene nanoplastic (nanoPS) hazard evaluation. First, a set of quality criteria recently proposed for nanoplastic ecotoxicity studies was applied. These rather general criteria for all types of nanoplastics and different test organisms were then, in the second step, tailored and refined specifically for Daphnia spp. and nanoPS. Finally, a scoring system was established by setting mandatory (high importance) as well as desirable (medium importance) criteria and defining a threshold to pass the evaluation. Among the existing studies on nanoPS ecotoxicity for Daphnia spp. (n = 38), only 18% passed the evaluation for usability in hazard evaluation. The few studies that passed the evaluation did not allow for conclusions on the hazard potential of nanoPS because there was no consensus among the studies. The greatest challenge we identified is in data reporting, as only a few studies presented complete data for hazard evaluation.
