Dustiness and Deagglomeration Testing: Interlaboratory Comparison of Systems for Nanoparticle Powders

  title={Dustiness and Deagglomeration Testing: Interlaboratory Comparison of Systems for Nanoparticle Powders},
  author={Yaobo Ding and Burkhard Stahlmecke and Araceli S{\'a}nchez Jim{\'e}nez and Ilse L. Tuinman and Heinz Kaminski and Thomas A J Kuhlbusch and Martie van Tongeren and Michael Riediker},
  journal={Aerosol Science and Technology},
  pages={1222 - 1231}
Different types of aerosolization and deagglomeration testing systems exist for studying the properties of nanomaterial powders and their aerosols. However, results are dependent on the specific methods used. In order to have well-characterized aerosols, we require a better understanding of how system parameters and testing conditions influence the properties of the aerosols generated. In the present study, four experimental setups delivering different aerosolization energies were used to test… 

A System to Create Stable Nanoparticle Aerosols from Nanopowders

A novel system, requiring minimal amounts of test materials, for studying powder aerosolization behavior and aerosol properties and can be used for experiments requiring stable aerosol concentrations and may also be an alternative method for testing dustiness.

Deagglomeration testing of airborne nanoparticle agglomerates: Stability analysis under varied aerodynamic shear and relative humidity conditions

ABSTRACT Occupational exposure to nanomaterial aerosols poses potential health risks to workers at nanotechnology workplaces. Understanding the mechanical stability of airborne nanoparticle

Powder Intrinsic Properties as Dustiness Predictor for an Efficient Exposure Assessment?

The converging tendencies in these initial results indicate that these physical properties can be used to model dustiness of falling powder, which can eventually be used in risk assessment tools for an efficient exposure estimation of the powders.

The effect of nanosilica (SiO2) and nanoalumina (Al2O3) reinforced polyester nanocomposites on aerosol nanoparticle emissions into the environment during automated drilling

ABSTRACT The aim of this study is to investigate the effect nanosilica and nanoalumina has on nanoparticle release from industrial nanocomposites due to drilling for hazard reduction whilst

Assessment of the physicochemical properties of chrysotile-containing brake debris pertaining to toxicity

The long, free, respirable chrysotile fibers were present in asbestos-containing brake debris, yet were of low bio-durability; incubation in artificial lysosomal fluid led to destruction of free fibers.

Rationale and decision rules behind the ECETOC NanoApp to support registration of sets of similar nanoforms within REACH

A tool is developed to create and justify sets of similar nanoforms and to ensure that each of the nanoforms is sufficiently similar to all other nanoforms, following the ECHA guidance.



A system to assess the stability of airborne nanoparticle agglomerates under aerodynamic shear

Dustiness test of nanopowders using a standard rotating drum with a modified sampling train

The standard rotating drum tester was used to determine the dustiness of two nanopowders, nano-TiO2 and fine ZnO, in standard 1-min tests. Then, the sampling train was modified to determine the

Determination of dustiness of nanostructured materials

The procedure for the determination of respirable and inhalable dustiness according to EN 15051 was further developed in the research project NanoCare sponsored by the German Bundesministerium fur

Dustiness testing of engineered nanomaterials

We investigated the dustiness (the propensity of a material to generate airborne dust during its handling) of various nanomaterials, including carbon nanotubes and metal oxides, by the vortex shaker

Airborne nanoparticle exposures associated with the manual handling of nanoalumina and nanosilver in fume hoods

Manual handling of nanoparticles is a fundamental task of most nanomaterial research; such handling may expose workers to ultrafine or nanoparticles. Recent studies confirm that exposures to

Method to evaluate the dustiness of pharmaceutical powders.

A bench-top dustiness tester is developed that requires only 10 mg of powder and fully contains the generated aerosol and may allow the pharmaceutical researcher to select powder formulations that present low airborne concentrations in the workplace.

Investigation of airborne nanopowder agglomerate stability in an orifice under various differential pressure conditions

The stability of agglomerates is not only an important material parameter of powders but also of interest for estimating the particle size upon accidental release into the atmosphere. This is

Dust Generation from Handling Powders in Industry

This article explores the hypothesis that the amount of dust generated by an industrial process that handles granular material depends on (a) the size distribution of the granules and (b) the ratio

Combined single-drop and rotating drum dustiness test of fine to nanosize powders using a small drum.

A dustiness test has been developed that performs both a single-drop and a continuous rotation test using a 6-g sample and enables a characterization of dustiness with relevance to different user scenarios.

Gas fluidization characteristics of nanoparticle agglomerates

An experimental study is conducted to determine the effect of different types of nanoparticles on the gas fluidization characteristics of nanoparticle agglomerates. Taking advantage of the extremely