Artboard 2 copy 35Artboard 64 copy 13Artboard 2 copy 19Artboard 2 copy 31Artboard 64 copy 18Artboard 64 copy 10Artboard 64 copy 11Artboard 64 copy 15Artboard 64 copy 12Artboard 64 copy 13Artboard 64 copy 14Artboard 2 copy 34Artboard 64 copy 19Artboard 64 copy 16MinusArtboard 2 copy 44Artboard 2 copy 38Artboard 2 copy 36PlusArtboard 64 copy 17Artboard 2 copy 43Artboard 2 copy 45Artboard 2 copy 46Artboard 64 copy 16Artboard 64 copy 18Artboard 64 copy 19Artboard 64 copy 17

Control of worker exposure during handling of manufactured nanomaterials in fume hoods

Konferenceabstrakt til konference - 2018

Resume

Fume hoods are one of the most common methods of controlling exposure in laboratory environments (Balas et al. 2010). In this research the potential release and the workers’ inhalation exposure during synthesis and handling of manufactured nanomaterials (MNMs; CuO, ZnO and TiO2) under a laboratory fume-hood was assessed (Fonseca et al. 2018). In order to increase confidence in worker protection by fume hoods, the capacity of a fume hood to prevent particle release to laboratory air during simulated spillage was also evaluated by varying drop height and mass load (Fonseca et al. 2018). Synthesis, handling and packaging of MNM did not result in detectable particle release to the laboratory air. During simulated spills, notable increase in particle concentrations were rarely detected in the breathing zone of the worker (Figure 1a and b). However, powder spills were sometimes observed to eject into the laboratory room (Figure 1c) and contaminate the workers’ laboratory clothing. In contrast to statements in previous scientific publications, this study confirms that an appropriate fume-hood with an adequate sash height of 0.3-0.5 m and face velocities ranging from 0.1 to 0.4 m s-1 provide high exposure control during synthesis and handling of MNMs. Here, preventing on average 98% of particles release into the surrounding environment. Nevertheless, safe approaches for cleaning powder spills should be prepared to prevent exposure via resuspension and inadvertent exposure by secondary routes.

Reference

Control of worker exposure during handling of manufactured nanomaterials in fume hoods. 2018.

Relaterede projekter

Bæredygtige nanoteknologier (SUN) NanoValid NANOTOOL - Arbejdsmiljøkatalog om håndtering af nanopartikler