测量美国三家玻璃纤维棉生产厂附近的环境纤维和玻璃纤维浓度。

IF 1.5 4区 医学 Q4 ENVIRONMENTAL SCIENCES
Laura Allen, Hannah Fairbanks, Paige Wells, Chloe Stewart, Natalie Suder Egnot, Andrew Maier
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引用次数: 0

摘要

对室外空气中的空气传播纤维浓度进行评估的公开研究数量有限,而对玻璃纤维棉生产设施附近环境空气中的典型空气浓度进行评估的研究数量则更少。以 Switala 等人(1994 年)的评估为基础,在美国三家玻璃纤维棉制造厂围栏线的固定位置采集了空气中纤维浓度的区域样本(直径小于 3 µm、长度大于 5 µm、纵横比等于或大于 5 比 1)。通过相衬显微镜 (PCM),使用 "B "计数规则,采用美国国家职业安全与健康研究所 (NIOSH) 的 7400 方法对样本进行分析。三个工厂共采集了 134 个样本。总体而言,73% 的样本低于定量限 (LOQ)。使用 Kaplan-Meier (KM) 方法估算低于 LOQ 的值,所有工厂合计的几何平均纤维浓度为 0.0028 纤维/立方厘米 (f/cc),第 95 百分位数的置信度上限为 0.0049 纤维/cc。使用能量色散 X 射线 (EDX) 分析法进一步分析可检测到空气纤维浓度的样品(n = 36)时,只有一个样品可检测到 0.0045 f/cc 的玻璃纤维浓度,该浓度被视为该方法的检测极限。尽管自 1994 年以来生产方法发生了变化(即使用了不同的粘合剂),并且在本次评估中使用了更新的方法来处理低于 LOQ 的值,但这一玻璃纤维浓度仍在生产设施附近环境纤维玻璃的预期范围之内,表明与 Switala 等人(1994 年)的测量结果一致。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Measurement of ambient fiber and fibrous glass concentrations near three fiberglass wool manufacturing facilities in the United States.

A limited number of published studies have evaluated concentrations of airborne fibers in outdoor air, with even fewer assessing typical air concentrations in the ambient air near fiberglass wool manufacturing facilities. Building upon the assessment by Switala et al. (1994), area samples for airborne fiber concentrations (diameters of less than 3 µm, lengths greater than 5 µm, and aspect ratios equal to or greater than 5 to 1) were collected at fixed locations along the fence lines of three fiberglass wool manufacturing facilities in the United States. Samples were analyzed by the National Institute for Occupational Safety and Health (NIOSH) Method 7400, via phase contrast microscopy (PCM) using "B" counting rules. A total of 134 samples were collected across the three plants. Overall, 73% of the samples collected were below the limit of quantification (LOQ). Using the Kaplan-Meier (KM) method for estimation of values below the LOQ, the geometric mean fiber concentration for all plants combined was 0.0028 fibers per cubic centimeter (f/cc), with the 95th percentile upper confidence level at 0.0049 f/cc. Of those samples with detectable concentrations of airborne fibers (n = 36), when further analyzed using energy dispersive X-ray (EDX) analysis, only one sample had a detectable glass fiber concentration at 0.0045 f/cc, which was noted as the detection limit for the method. This glass fiber concentration is within the range anticipated for ambient fibrous glass near production facilities, suggesting consistency with measurements made by Switala et al. (1994), despite changes in production methods (i.e., use of different binders) since 1994 and the use of updated methods for treatment of values below the LOQ in the current assessment.

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来源期刊
Journal of Occupational and Environmental Hygiene
Journal of Occupational and Environmental Hygiene 环境科学-公共卫生、环境卫生与职业卫生
CiteScore
3.30
自引率
10.00%
发文量
81
审稿时长
12-24 weeks
期刊介绍: The Journal of Occupational and Environmental Hygiene ( JOEH ) is a joint publication of the American Industrial Hygiene Association (AIHA®) and ACGIH®. The JOEH is a peer-reviewed journal devoted to enhancing the knowledge and practice of occupational and environmental hygiene and safety by widely disseminating research articles and applied studies of the highest quality. The JOEH provides a written medium for the communication of ideas, methods, processes, and research in core and emerging areas of occupational and environmental hygiene. Core domains include, but are not limited to: exposure assessment, control strategies, ergonomics, and risk analysis. Emerging domains include, but are not limited to: sensor technology, emergency preparedness and response, changing workforce, and management and analysis of "big" data.
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