A Novel Approach of Quantifying Real-Time Aerosol Concentrations from Gravimetric Filter Collection
一种通过重量过滤器采集来量化实时气溶胶浓度的新方法
基本信息
- 批准号:9981479
- 负责人:
- 金额:$ 10.8万
- 依托单位:
- 依托单位国家:美国
- 项目类别:
- 财政年份:2019
- 资助国家:美国
- 起止时间:2019-09-01 至 2022-08-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Occupational exposure to particulate matter (PM) is a known risk factor for numerous adverse health effects
including asthma, chronic obstructive pulmonary disease, bronchitis, and decreased lung function. Knowledge
of the timing of exposure risks is critical for effective risk mitigation. However, the benefits of time-resolved
exposure data must be weighed against the regulatory requirements for assessing compliance - namely the
collection of a time-integrated filter sample. An ideal exposure measurement technology would provide real-time
exposure data in conjunction with a time-integrated sample that satisfies requirements for regulatory compliance
monitoring. The technology should be lightweight, compact, and low-cost. Current real-time aerosol equipment
does not meet these needs. Therefore, to reduce workers’ exposure to pollutants, improved methods of time-
resolved particulate matter quantification are needed.
The objective of the proposed work is to develop a low-cost method for assessing time-resolved aerosol
exposure using differential pressure sensors. The proposed device will use filter pressure drop coupled with
knowledge of time-integrated mass gain of that filter. Filter mass gain provides a sample-specific measure to
calibration the data, allowing pressure drop to be used as an estimation of time-resolved aerosol concentration.
I hypothesize that time-resolved measure of filter pressure drop can be used as a low-cost method of determining
real-time aerosol concentrations while still complying with regulatory requirements for assessing worker
exposure.
This proposed work is relevant to multiple NORA sectors including Agriculture/Forestry, Construction,
Manufacturing, and Mining. All four sectors have extensive workplace exposure to particulate matter. The
proposed work will complement the NIOSH strategic goal of reducing the occurrence of occupational respiratory
diseases
Specific Aim 1: Develop a low-cost method for quantifying time-resolved aerosol concentrations based on filter
pressure drop simultaneously with a time-integrated gravimetric measurement
Specific Aim 2: Develop a semi-empirical model that relates changes in filter pressure drop to filter media
characteristics, aerosol properties, and environmental conditions
Specific Aim 3: Evaluate both the model and the concentration via pressure device through field experiments
职业暴露于颗粒物(PM)是一个已知的风险因素,许多不利的健康影响
包括哮喘、慢性阻塞性肺病、支气管炎和肺功能下降。知识
风险暴露的时间对于有效缓解风险至关重要。然而,时间分辨的好处
暴露数据必须与评估合规性的监管要求进行权衡,即
收集时间积分滤波器样本。理想的曝光测量技术将提供实时
暴露数据以及满足法规遵从性要求的时间积分样本
监测.该技术应该是重量轻、紧凑和低成本的。当前实时气雾剂设备
并不能满足这些需求。因此,为了减少工人对污染物的接触,改进了时间-
需要分辨的颗粒物定量。
这项工作的目的是开发一种低成本的方法来评估时间分辨气溶胶
使用压差传感器进行曝光。所提出的装置将使用过滤器压降,
过滤器时间积分质量增益的知识。过滤器质量增益提供了样品特定的测量,
校准数据,允许压降用作时间分辨气溶胶浓度的估计。
我假设时间分辨的过滤器压降测量可以作为一种低成本的方法来确定
实时气溶胶浓度,同时仍符合评估工人的法规要求
exposure.
这项拟议的工作与多个诺拉部门有关,包括农业/林业、建筑、
制造业和采矿业。所有四个部门都有广泛的工作场所暴露于颗粒物。的
拟议的工作将补充NIOSH减少职业性呼吸道疾病发生的战略目标,
疾病
具体目标1:开发一种基于过滤器的时间分辨气溶胶浓度定量的低成本方法
压降与时间积分重力测量同时进行
具体目标2:开发一个将过滤器压降变化与过滤介质联系起来的半经验模型
特性、气溶胶特性和环境条件
具体目标3:通过现场实验评估模型和通过压力装置的浓度
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Christian L'Orange其他文献
Christian L'Orange的其他文献
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{{ truncateString('Christian L'Orange', 18)}}的其他基金
A Novel Approach of Quantifying Real-Time Aerosol Concentrations from Gravimetric Filter Collection
一种通过重量过滤器采集来量化实时气溶胶浓度的新方法
- 批准号:
10179285 - 财政年份:2019
- 资助金额:
$ 10.8万 - 项目类别:
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