Hiromu Sakurai , Yoshiko Murashima


Particle Measurement Research Group, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8563, Japan



Received: September 30, 2017
Revised: December 10, 2017
Accepted: December 12, 2017
Download Citation: ||https://doi.org/10.4209/aaqr.2017.09.0352  

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Cite this article:
Sakurai, H. and Murashima, Y. (2018). Evaluation of the NanoAerosol Generator by Kanomax FMT Inc. in Aerosolization of Size Standard Nanoparticle and Protein. Aerosol Air Qual. Res. 18: 549-554. https://doi.org/10.4209/aaqr.2017.09.0352


HIGHLIGHTS

  • A new nebulizer was evaluated experimentally and compared with an electrospray.
  • Sub-30 nm PSL particles and sub-10 nm protein molecules were used in the test.
  • The new nebulizer was successful in aerosolizing both materials.\
  • The new nebulizer gave higher aerosol particle concentration than the electrospray.

ABSTRACT


A new nebulizer called NanoAerosol Generator (NAG) by Kanomax FMT, Inc. was evaluated experimentally in their performance in aerosolizing sub-100 nm particles and sub-10 nm protein molecules which cannot be aerosolized with conventional compressed-air jet nebulizers due to the interference by a number of residue particles. For the challenge particles, 29 nm-polystyrene latex (PSL) particles and bovine serum albumin (BSA) protein molecules were used as sub-100 nm and sub-10 nm test materials, respectively. For both particles, the aerosolization by the NAG was successful with a clear separation between the peak of the challenge particles and the peak of residual particles in the size distribution spectra. The size distributions of aerosolized 29 nm-PSL particles were compared between the NAG and an electrospray aerosol generator (EAG) with liquid samples of the same particle concentration. The EAG showed clearer separation of the PSL peak from the residual peak; on the other hand, the peak height was taller for the NAG by a factor of 6 than for the EAG, which indicated the generation of airborne particles from a liquid suspension/solution of the same concentration was more efficient for the NAG than for the EAG.


Keywords: Nebulizer; Electrospray; Polystyrene latex; Bovine serum albumin.

 



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