Preliminary risk assessment and risk hypotheses Sample Clauses

Preliminary risk assessment and risk hypotheses. ‌ Given the available information on exposure scenarios, hazard properties of graphene family materials, in this last phase of the case study, the qualitative risk assessment with the preliminary risk hypotheses will be formulated. No final report will be produced, since expert intervention and interaction with stakeholders to support the identification of final risk hypotheses is not possible at this time. Risk hypothesis 1: workers exposure. The available studies on workers exposure show that there is some exposure to graphene family materials, especially at industrial level, and for the operations where human intervention is necessary (Xxxxxxxx et al., 2016). However, the level of exposure is lower than the reference level for the Time Weighted Average for particles in air, and the actual amount of graphene was not verified in the samples. Therefore, more work has to be done in terms of exposure assessment, also for different industrial production methods. Despite the low possibility for exposure, this risk hypothesis is considered for evaluation because data are lacking, and the toxic potential of graphene family materials inhalation. This hypothesis is also valid for the production process of the membrane. Risk hypothesis 2: environmental exposure during use for decontamination. This hypothesis covers the environmental exposure occurring during the use as decontamination. This application is not well characterized yet, and a widespread use is not foreseen at this time. However, localized applications can lead to release into the environment of graphene material due to unintentional dispersion (e.g. loss of adsorbent material in oil spill recovery). In time, degradation of polymers can release graphene, which is persistent and bioavailable and could cause adverse effects on ecological targets, also due to the very absorption of toxic metals and substances that can be concentrated and carried into the organisms. Indirect humans exposure is also possible through the food chain.
Sample 1
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