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/cm³/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.

中文翻译：

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纳米消费喷雾产品中胶态纳米材料悬浮液和雾化颗粒的理化特性。

表征了胶体工程纳米材料（ENM）和消费喷雾产品释放的气溶胶之间的理化特性。动态光散射（DLS），透射电子显微镜（TEM）和电感耦合等离子体质谱仪（ICP-MS）用于评估产品中悬浮的ENM。直读仪器，TEM和ICP-MS用于表征雾化ENM的特性。假定喷雾后带有ENM的雾化有机化合物在短时间内蒸发。通过DLS测量的产品溶液中ENM的中值直径约为200-350 nm，而通过TEM确认的单个颗粒在3至50 nm之间。雾化的ENM的大小在7到44 nm之间，并且它们的聚集体在近距离处大约为100-1000 nm。气溶胶中还发现了一些无机物质，包括纳米原料。可以从远距离识别从推进剂喷雾释放的颗粒，而在使用泵喷雾时不能在远距离发现它们。推进剂喷雾产生的数字浓度增加到6000颗粒/厘米³ / g在近距离处并分散到远处，而从泵喷雾喷出的大部分液滴则沉降在喷雾器位置附近。我们发现每种产品中都包含除标记的ENM之外的其他金属，并且喷雾时颗粒的特性也有所不同。