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MAIN RESEARCH DIRECTIONS

bullet Development of bioaerosol sampling, control, and generation methods
bullet Investigation of aerosol and bioaerosol monitors’ performance
bullet Integration of bioaerosol sampling tools with advanced microbiological analysis techniques
bullet Bioaerosol exposure assessment
bulletExposure and health effects of nanoparticles
bulletIndoor air quality in "green" buildings

SELECTED RESEARCH PROJECTS

 For more information about these and other projects, please contact Dr. G. Mainelis mainelis@envsci.rutgers.edu

”Design and Evaluation of Advanced Electrostatic Sampler for Total Bioaerosols”

Integration of bioaerosol sampling methods with modern analysis techniques, such as the polymerase chain reaction (PCR) as well as our ability to detect low concentrations of airborne agents require samplers that are able not only to efficiently collect the biological particles, but also to concentrate them in small amounts of fluids. In this research, we are developing a novel bioaerosol sampler, where a combination of electrostatic collection mechanism with superhydrophobic collection surface allows for efficient particle collection, removal and concentration in water droplets as small as 5 µL. This new sampling concept allows achieving very high sample concentration rates (up to 1 million and higher) and could be applied to detect low concentrations of bioaerosols in various environments.

 Related publications:

Han, T.# and Mainelis, G.* (2008) Design and Development of an Electrostatic Sampler for Bioaerosols with High Concentration Rate, Journal of Aerosol Science, 12: 1066-1078.

Han, T.#, An, H.R.# and Mainelis, G.* (2010) Performance of an Electrostatic Precipitator with Superhydrophobic Surface when collecting Airborne Bacteria, Aerosol Science and Technology, 44:339-348. Abstract.

Han, T.#, Nazarenko, Y. #, Lioy, P.J., and Mainelis, G.* (2011) Collection Efficiencies of An Electrostatic Sampler With Superhydrophobic Surface For Fungal Bioaerosols, Indoor Air, 21:110-120. Abstract

 

“Exposure of Consumers to Nanoparticles due to the Use of Nanotechnology-based products”

The US National Nanotechnology Initiative defines nanotechnology as “the understanding and control of matter at dimensions between approximately 1 and 100 nanometers, where unique phenomena enable novel applications”. Given the unique properties of materials at such scale, the development of nanotechnologies and their implementation in consumer products are undergoing rapid growth and nanosized ingredients have already been incorporated in an extensive variety of products in the market. However, we have a very limited understanding of the potential for exposure to nanoparticles from such products and resulting health effects, which is critical for the development of safety regulations and guidelines. This project looks at the use of nanotechnology-based and regular consumer products and estimates our potential exposures to nanoparticles.

 Related Publications:

Nazarenko, N.#, Zhen, H.#, Han, T.#, Lioy, P.J., Mainelis, G.* (2012) Nanomaterial Inhalation Exposure from Nanotechnology-based Cosmetic Powders: a Quantitative Assessment, Journal of Nanoparticle Research, 14:1229, DOI: 10.1007/s11051-012-1229-2. Abstract.

Nazarenko, Y.#, Zhen, H.#, Han, T.#, Lioy, P.J. and Mainelis, G.* (2012) Potential for exposure to engineered nanoparticles from nanotechnology-based cosmetic powders, Environmental Health Perspectives, 120:885-892, Abstract.

Nazarenko, Y#., Han, T.#, Lioy, P.J., and Mainelis, G.* (2011) Potential For Exposure To Engineered Nanoparticles From Nanotechnology-Based Consumer Spray Products, Journal of Exposure Science and Environmental Epidemiology, 21(5): 515-528. Abstract

Lioy, P.J., Han, T#., Nazarenko, Y.#, and Lioy, M.J., Mainelis, G.* (2010) Nanotechnology and Exposure Science – What Is Needed To Fill the Research and Data Gaps for Consumer Products, International Journal of Occupational and Environmental Health, 16:378-387. Abstract

 

 “Application of Robotic Technologies for Exposure Assessment"

 Indoor exposures to particles, allergens, mold spores, and endotoxin have been suggested as etiological agents of asthma; therefore, accurate determination of those exposures, especially in young children (6–36 months), is important for understanding the development of asthma. Because use of personal sampling equipment in this population is difficult, and in children <1 year of age impossible, we developed a personal sampling surrogate: the Pretoddler Inhalable Particulate Environmental Robotic (PIPER) sampler to better estimate their exposures. This project develops and applies the robotic sampler in the field to study exposure of children to various airborne contaminants.

Related publications:

Wang, Z.#, Shalat, S., Black, K., Lioy, P.J., Stambler, A., Emoekpere, O.H., Hernandez, M., Han, T.#, and Mainelis, G.* (2012) Use of a robotic sampling platform to assess young children’s exposure to indoor bioaerosols, Indoor Air, 22(2):159-169. Abstract.

 

Shalat, S.*, Stambler, A.A., Wang, Z#., Mainelis, G., Emoekpere, O.H., Hernandez, M., Lioy, P., and Black, K. (2011) Development and In-home Testing of the Pre-toddler Inhalable Particulate Environmental Robotic (PIPER Mk IV) Sampler, Environmental Science and Technology, 45(7):2945-2950. Abstract.

 

Shalat, S.*, Lioy, P., Schmeelck, K.#, and Mainelis, G. (2007) Improving Estimation of Indoor Exposure to Inhalable Particles for Children in the First Year of Life, Journal of Air and Waste Management Association, 57(8): 934-939. Abstract.

Last modified: 04/16/2014