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Physicochemical characteristics of colloidal nanomaterial suspensions and aerosolized particulates from nano‐enabled consumer spray products
Author(s) -
Park Jihoon,
Ham Seunghon,
Kim Sunju,
Jang Miyeon,
Lee Jinho,
Kim Sungkyoon,
Park Donguk,
Lee Kiyoung,
Kim Hyunmi,
Kim Pilje,
Yoon Chungsik
Publication year - 2020
Publication title -
indoor air
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.387
H-Index - 99
eISSN - 1600-0668
pISSN - 0905-6947
DOI - 10.1111/ina.12668
Subject(s) - aerosolization , nanomaterials , dynamic light scattering , aerosol , inductively coupled plasma , propellant , particle (ecology) , chemistry , particulates , inductively coupled plasma mass spectrometry , nanoparticle , materials science , analytical chemistry (journal) , chromatography , nanotechnology , mass spectrometry , plasma , medicine , physics , oceanography , organic chemistry , quantum mechanics , geology , inhalation , anatomy
Physicochemical properties between colloidal engineered nanomaterials (ENMs) and aerosols released from consumer spray products were characterized. A dynamic light scattering (DLS), transmission electron microscopy (TEM), and inductively coupled plasma mass spectrometer (ICP‐MS) were used to evaluate the suspended ENMs in the products. Direct‐reading instruments, TEM, and ICP‐MS were used to characterize the properties of aerosolized ENMs. The aerosolized organic compounds with ENMs were assumed to be vaporized for a short time after spraying. The median diameter of ENMs in product solutions measured by DLS was about 200‐350 nm, while individual particle was confirmed from 3 to 50 nm by TEM. The size of aerosolized ENMs was ranged from 7 to 44 nm, and their aggregates were about 100‐1000 nm in near distance. Some inorganic substances including raw nanomaterials were also found in the aerosol. The particles released from the propellant sprays were identified in far distance, while they were not found in far distance when pump sprays were used. The number concentration from the propellant sprays increased up to 6000 particles/cm 3 /g at near distance and dispersed to far distance, while the most of droplets emitted from pump sprays were settled down near sprayer's location. We found other metals besides labeled ENMs are included in each product and the characteristics of the particles are different when they are sprayed.