Consumers worry about the presence of nano-particles in paints and the risk of exposure. As a result, the paint industry now omits marketing paints as containing nanoparticles. The industry claims that no nanoparticles are released into the indoor environment; this, however, has yet to be documented. In this study, the emission of nano-sized emission from four indoor paints was investigated. The emission was studied for both base and full-pigmented versions of the paints, which consisted of three water-borne acrylic paints and one solvent-borne alkyd paint. All experiments were performed twice in a 6.783 m³ stainless-steel test chamber under standardized conditions (22.98°C, 50.08% RH, air exchange rate 0.48 h^-1). Emissions during the paint-drying period were measured using a TSI Fast Mobility Particle Sizer (FMPS) measuring the number concentration of nano-particles and the size distribution in the range 5.6–560 nm.The results from the solvent-borne paint showed the highest concentration, with a mean concentration of 3.2·10⁵ particles/cm³ and a maximum of 1.4·10⁶ particles/cm³. This paint also had the smallest particle size distribution, with 9.31 nm particles as the most dominant particle size. The results from this study showed that the exposure to nanoparticles for the residents evaluated over a 7 or 28 day period was low and that interior paints are probably not very important when it comes to identifying products that release nano-particles into indoor environments.

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干燥期间用于室内表面的市售涂料的纳米排放

消费者担心涂料中纳米颗粒的存在以及暴露的风险。结果，涂料工业现在忽略了含有纳米颗粒的涂料销售。业界声称没有纳米颗粒释放到室内环境中。但是，这尚未被记录下来。在这项研究中，研究了四种室内涂料的纳米排放。对基础涂料和全颜料涂料的排放进行了研究，该涂料由三种水性丙烯酸涂料和一种溶剂性醇酸涂料组成。所有实验均在标准化条件下（22.98°C，相对湿度50.08％，空气交换速率0.48 h ^-1）在6.783 m ³不锈钢试验箱中进行了两次）。使用TSI快速移动颗粒粒度仪（FMPS）测量涂料干燥期间的排放量，该粒度仪测量纳米粒子的数量浓度和5.6-560 nm范围内的粒径分布。溶剂型涂料的结果显示出最高的浓度，平均浓度为3.2·10 ^5个颗粒/ cm ³，最大浓度为1.4·10 ^6个颗粒/ cm ³。该涂料的粒径分布也最小，其中最主要的粒径为9.31 nm。这项研究的结果表明，经过7或28天的评估，居民对纳米颗粒的接触率很低，而且在确定将纳米颗粒释放到室内环境的产品时，内部涂料可能不是很重要。