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Novel Active Personal Nanoparticle Sampler for the Exposure Assessment of Nanoparticles in Workplaces

机译：用于工作场所中的纳米粒子暴露评估的新型主动个人纳米粒子采样器

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摘要

A novel active personal nanoparticle sampler (PENS), which enables the collection of both respirable par-ticulate mass (RPM) and nanoparticles (NPs) simultaneously, was developed to meet the critical demand for personal sampling of engineered nanomaterials (ENMs) in workplaces. The PENS consists of a respirable cyclone and a micro-orifice impactor with the cutoff aerodynamic diameter (d_(pa50) of 4 μm and 100 run, respectively. The micro-orifice impactor has a fixed micro-orifice plate (137 nozzles of 55 μm in the inner diameter) and a rotating, silicone oil-coated Teflon filter substrate at 1 rpm to achieve a uniform particle deposition and avoid solid particle bounce. A final filter is used after the impactor to collect the NPs. Calibration results show that the d_(pa50) of the respirable cyclone and the micro-orifice impactor are 3.92 ± 0.22 μm and 101.4 ± 0.1 nm, respectively. The d_(pa50) at theloaded micro-Al_2O_3 mass of 0.36-3.18 mg is shifted to 102.9-101.2 nm, respectively, while it is shifted to 98.9-97.8 nm at the loaded nano-TiO_2 mass of 0.92-1.78 mg, respectively. That is, the shift of d_(pa50) due to solid particle loading is small if the PENS is not overloaded. Both NPs and RPM concentrations were found to agree well with those of the IOSH respirable cyclone and MOUDI. By using the present PENS, the collected samples can be further analyzed for chemical species concentrations besides gravimetric analysis to determine the actual exposure concentrations of ENMs in both RPM and NPs fractions in workplaces, which are often Influenced by the background or incident pollution sources.
机译：开发了一种新颖的主动式个人纳米颗粒采样器（PENS），它可以同时收集可吸入颗粒物（RPM）和纳米颗粒（NPs），以满足工作场所对工程纳米材料（ENM）进行个人采样的关键需求。 PENS由一个可吸入的旋风分离器和一个微孔冲击器组成，它们的截止空气动力学直径（d_（pa50）分别为4μm和100游程）。微孔冲击器具有固定的微孔板（137个喷嘴，直径为55μm）内径）和旋转的涂有硅油的聚四氟乙烯过滤器基材，转速为1 rpm，以实现均匀的颗粒沉积并避免固体颗粒反弹。在撞击器之后使用最终过滤器收集NP。校准结果显示d_可呼吸旋风分离器和微孔板撞击器的（pa50）分别为3.92±0.22μm和101.4±0.1 nm，在装载的0.32-3.18 mg微Al_2O_3质量下d_（pa50）移至102.9-101.2 nm，分别在0.92-1.78 mg的负载纳米TiO_2质量下移动到98.9-97.8 nm，也就是说，如果PENS不超载，由于固体颗粒负载引起的d_（pa50）的移动很小。发现NPs和RPM浓度均与IOSH re气旋和MOUDI。通过使用本PENS，除了重量分析之外，还可以进一步分析收集的样品的化学物质浓度，以确定工作场所RPM和NPs组分中ENM的实际暴露浓度，这些浓度通常受背景或事故污染源的影响。

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  • 来源
    《Environmental Science & Technology》 |2012年第8期|p.4546-4552|共7页
  • 作者

    Chuen-Jinn Tsai; Chun-Nan Liu; Shao-Ming Hung; Sheng-Chieh Chen; Shi-Nian Uang; Yung-Sung Cheng; Yue Zhou;

  • 作者单位

    Institute of Environmental Engineering, National Chiao Tung University (NCTU), Hsinchu, 1001 University Road, 30010, Taiwan;

    Institute of Environmental Engineering, National Chiao Tung University (NCTU), Hsinchu, 1001 University Road, 30010, Taiwan;

    Institute of Environmental Engineering, National Chiao Tung University (NCTU), Hsinchu, 1001 University Road, 30010, Taiwan;

    Institute of Environmental Engineering, National Chiao Tung University (NCTU), Hsinchu, 1001 University Road, 30010, Taiwan;

    Institute of Occupational Safety and Health (IOSH), Council of Labor Affairs, Executive Yuan, 99, Lane 407, Hengke Road, Shijr,Taipei, 22143, Taiwan;

    Lovelace Respiratory Research Institute, 2425 Ridgecrest, Albuquerque 87108, United States;

    Lovelace Respiratory Research Institute, 2425 Ridgecrest, Albuquerque 87108, United States;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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