title: Investigation of discharged aerosol nanoparticles during chemical precipitation and spray pyrolysis for developing safety measures in the nano research laboratory.
abstract: Nowadays, the demands for the nanoparticles are increasing due to their tremendous applications in various fields. As a consequence, the discharge of nanoparticles into the atmosphere and environment is also increasing, posing a health threat and environmental damage in terms of pollution. Thus, an extensive research is essential to evaluate the discharge of these nanoparticles into the environment. Keeping this in mind, the present investigation aimed to analyze the discharge of aerosol nanoparticles that are synthesized in the laboratory via chemical precipitation and spray pyrolysis methods. The results indicated that the chemical precipitation method discharges a higher concentration of nanoparticles in the work site when compared to the spray pyrolysis method. The aerosol concentration also varied with the different steps involved during the synthesis of nanoparticles. The average particle's concentration in air for chemical precipitation and spray pyrolysis methods was around 1,037,476 and 883,421particles/cm3. In addition, the average total discharge of nanoparticles in the entire laboratory was also examined. A significant variation in the concentration of nanoparticles was noticed, during the processing of materials and the concentration of particles (14-723nm) exceeding the daily allowed concentration to about 70-170 times was observed over a period of 6 months. Thus, the results of the present study will be very useful in developing safety measures and would help in organizing the rules for people working in nanotechnology laboratories to minimize the hazardous effects.
authors.affiliation: National University of Science and Technology "MISIS", Leninskiy Pr. 4, Moscow 119049, Russia.
authors.forename: Еvgeny
authors.initials: Е
authors.lastname: Kolesnikov
authors.affiliation: National University of Science and Technology "MISIS", Leninskiy Pr. 4, Moscow 119049, Russia; Department of Biotechnology, K.S. Rangasamy College of Arts and Science, Tiruchengode 637215, Tamil Nadu, India. Electronic address: karunakarang5@misis.ru.
authors.forename: Gopalu
authors.initials: G
authors.lastname: Karunakaran
authors.affiliation: National University of Science and Technology "MISIS", Leninskiy Pr. 4, Moscow 119049, Russia; National Research Tomsk Polytechnic University, Lenina Avenue, 30, Tomsk 634050, Russia.
authors.forename: Anna
authors.initials: A
authors.lastname: Godymchuk
authors.affiliation: National University of Science and Technology "MISIS", Leninskiy Pr. 4, Moscow 119049, Russia.
authors.forename: Levina
authors.initials: L
authors.lastname: Vera
authors.affiliation: National University of Science and Technology "MISIS", Leninskiy Pr. 4, Moscow 119049, Russia.
authors.forename: Andrey Grigorjevich
authors.initials: AG
authors.lastname: Yudin
authors.affiliation: National University of Science and Technology "MISIS", Leninskiy Pr. 4, Moscow 119049, Russia; G.R. Derzhavin Tambov State University, 33, Internatsionalnaya Street, Tambov 392000, Russia.
authors.forename: Alexander
authors.initials: A
authors.lastname: Gusev
authors.affiliation: National University of Science and Technology "MISIS", Leninskiy Pr. 4, Moscow 119049, Russia.
authors.forename: Denis
authors.initials: D
authors.lastname: Kuznetsov
mesh_terms: D000336:Aerosols / Q000737:chemistry*; D000393:Air Pollutants / Q000032:analysis*; D017607:Aluminum Compounds / Q000032:analysis; D011232:Chemical Precipitation; D004784:Environmental Monitoring / Q000295:instrumentation; D004867:Equipment Design; D007753:Laboratories; D053758:Nanoparticles / Q000032:analysis*; D036103:Nanotechnology; D009532:Nickel / Q000032:analysis; D010316:Particle Size; D017670:Sodium Compounds / Q000032:analysis
chemical_list: D000336:Aerosols; D000393:Air Pollutants; D017607:Aluminum Compounds; D017670:Sodium Compounds; C524957:sodium hydride; C035197:nickel nitrate; C052045:aluminum nitride; D009532:Nickel
keywords: Aerosol; Chemical Precipitation; Nanoparticles; Safety Measures; Spray Pyrolysis; Toxicity