首页> 外文期刊>The Annals of occupational hygiene. >Exposure and emissions monitoring during carbon nanofiber production--Part II: polycyclic aromatic hydrocarbons.
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Exposure and emissions monitoring during carbon nanofiber production--Part II: polycyclic aromatic hydrocarbons.

机译:碳纳米纤维生产过程中的暴露和排放监测第二部分:多环芳烃。

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Production of carbon nanofibers and nanotubes (CNFs/CNTs) and their composite products is increasing globally. High-volume production may increase the exposure risks for workers who handle these materials. Though health effects data for CNFs/CNTs are limited, some studies raise serious health concerns. Given the uncertainty about their potential hazards, there is an immediate need for toxicity data and field studies to assess exposure to CNFs/CNTs. An extensive study was conducted at a facility that manufactures and processes CNFs. Filter, sorbent, cascade impactor, bulk, and microscopy samples, combined with direct-reading instruments, provided complementary information on air contaminants. Samples were analyzed for organic and elemental carbon (OC and EC), metals, and polycyclic aromatic hydrocarbons (PAHs), with EC as a measure of CNFs. Transmission electron microscopy with energy-dispersive X-ray spectroscopy also was applied. Fine/ultrafine iron-rich soot, PAHs, and carbon monoxide were production byproducts. Direct-reading instrument results were reported previously [Evans DE et al. (Aerosol monitoring during carbon nanofiber production: mobile direct-reading sampling. Ann Occup Hyg 2010; 54:514-31)]. Results for time-integrated samples are reported as companion papers in this issue. OC and EC, metals, and microscopy results are reported in Part I [Birch ME et al. (Exposure and emissions monitoring during carbon nanofiber production-Part I: elemental carbon and iron-soot aerosols. Ann Occup Hyg 2011; 55: 1016-36.)] whereas results for PAHs are reported here. Naphthalene and acenaphthylene were the dominant PAHs with average concentrations ranging from 115 to 336 mug m(-3) and 35 to 84 mug m(-3), respectively. Concentrations of other PAHs ranged from approximately 1 to 10 mug m(-3).
机译:全球碳纳米纤维和纳米管(CNFs / CNT)及其复合产品的生产正在增长。大量生产可能会增加处理这些材料的工人的暴露风险。尽管CNF / CNT的健康影响数据有限,但一些研究提出了严重的健康问题。考虑到其潜在危害的不确定性,迫切需要毒性数据和现场研究以评估对CNFs / CNTs的接触。在制造和加工CNF的工厂进行了广泛的研究。过滤器,吸附剂,级联撞击器,散装和显微镜样品,再加上直读仪器,可提供有关空气污染物的补充信息。分析样品中的有机碳和元素碳(OC和EC),金属和多环芳烃(PAH),其中EC作为CNF的量度。还应用了具有能量色散X射线光谱学的透射电子显微镜。细/超细富铁烟灰,PAH和一氧化碳是生产副产物。直读仪器的结果先前已有报道[Evans DE等。 (碳纳米纤维生产过程中的气溶胶监测:移动式直读采样。AnnOccup Hyg 2010; 54:514-31)。时间积分样本的结果在本期中作为伴随论文进行了报道。第一部分报告了OC和EC,金属和显微镜检查结果[Birch ME等。 (碳纳米纤维生产过程中的暴露和排放监测-第一部分:元素碳和铁烟气溶胶。AnnOccup Hyg 2011; 55:1016-36。)]但是这里报道了多环芳烃的结果。萘和是主要的多环芳烃,平均浓度分别为115至336立方米(-3)和35至84立方米(-3)。其他多环芳烃的浓度范围约为1至10马克杯m(-3)。

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