Development of a unique multi-contaminant air sampling device for a childhood asthma cohort in an agricultural environment.
Development of a unique multi-contaminant air sampling device for a childhood asthma cohort in an agricultural environment.
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为农业环境中的儿童哮喘群体开发独特的多污染物空气采样装置。
DOI：
10.1039/c3em00330b
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
Karr,CatherineJ
中科院分区：
文献类型：
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作者：
Armstrong,JennaL;Fitzpatrick,ColeF;Loftus,ChristineT;Yost,MichaelG;Tchong-French,Maria;Karr,CatherineJ
这项研究描述了一种新型室外主动空气采样器的设计、部署、性能和可接受性，该采样器可以为农村环境中哮喘加重因素研究(AFARE)提供定时间隔的多种污染物同时测量--这是一项在华盛顿州亚基马山谷对50名儿童进行的纵向队列研究。采样器由连接到各个临界孔口的多个采样介质和一个旋片式真空泵组成。它被连接到一个定时控制阀系统，在18个月的时间里每6天收集24小时样本。我们描述了一种具有空间代表性的方法，该方法同时具有定量和定性的位置标准，以在农村地区(20×60公里)的参与者住宅部署由14个设备组成的网络。总体而言，采样器表现良好，因为同时的平均采样流率处于或高于每个感兴趣的暴露指标的建议采样率范围。在西班牙裔农场工人参与家庭的研究人群中，可接受性很高。采样器的设计可能会被证明对未来以城市和农村社区为基础的研究有用，目的是收集特定时间段的多种污染物数据。
This research describes the design, deployment, performance, and acceptability of a novel outdoor active air sampler to provide simultaneous measurements of multiple contaminants at timed intervals for the Aggravating Factors of Asthma in Rural Environment (AFARE) study—a longitudinal cohort of 50 children in Yakima Valley, Washington. The sampler was constructed of multiple sampling media connected to individual critical orifices and a rotary vane vacuum pump. It was connected to a timed control valve system to collect 24 hours samples every six days over 18 months. We describe a spatially representative approach with both quantitative and qualitative location criteria to deploy a network of 14 devices at participant residences in a rural region (20 × 60 km). Overall the sampler performed well, as the concurrent mean sample flow rates were within or above the ranges of recommended sampling rates for each exposure metric of interest. Acceptability was high among the study population of Hispanic farmworker participant households. The sampler design may prove useful for future urban and rural community-based studies with aims at collecting multiple contaminant data during specific time periods.