Field Deployable Vapor Intrusion Monitor

现场可部署蒸汽入侵监视器

基本信息

批准号：
8738674
负责人：
BIKAS VAIDYA
金额：
$ 48.47万
依托单位：
LYNNTECH, INC.
依托单位国家：
美国
项目类别：
财政年份：
2011
资助国家：
美国
起止时间：
2011-09-01 至 2017-08-31
项目状态：
已结题

来源：
https://reporter.nih.gov/project-details/8738674
关键词：
Accounting Address Air Area Asses Automation Chemicals Climate Collection Complex Detection Devices Diagnostic Disadvantaged Environmental Pollution Exposure to Food Safety Forensic Medicine Foundations Fourier Transform Gas Chromatography Goals Hazardous Chemicals Health Individual Investigation Laboratories Laboratory Study Measurement Measures Medical Methods Monitor National Institute of Environmental Health Sciences Nature Optics Organic Chemicals Outcome Performance Pharmaceutical Preparations Pharmacologic Substance Phase Polymers Population Preparation Price Problem Solving Process Reagent Research Research Proposals Retrieval Safety Sampling Site Small Business Innovation Research Grant Soil Solid Solvents Source Spectroscopy, Fourier Transform Infrared Strategic Planning Superfund Surface System Telemetry Testing Time Variant Workplace base cost data management detector drinking water hazard information gathering instrument interest method development migration novel operation phase 1 study point of care portability programs public health relevance remediation sample collection sensor superfund site tool vapor wasting water quality

项目摘要

DESCRIPTION: Vapor intrusion is the migration of volatile organic chemicals from below ground into overlying buildings and is a major cause of large population exposure to hazardous chemicals. To assess health impacts of exposure to vapor intrusion compounds, monitoring of indoor air is required. Conventional vapor intrusion monitoring is done by on-site sample collection followed by laboratory analysis. Disadvantages of the conventional method include: the need for sample retrieval, extended processing times, inability to adequately track variations in concentration over time and high cost. Portable analysis methods that can be installed or operated and provide continuous and/or short term measurements are needed to solve these problems. This Phase II Small Business Innovation Research proposal addresses this need through a compact cartridge-based sampling and detection method that, when combined with a portable Fourier Transform Infrared (FTIR) spectrometer, can detect vapor intrusion compounds at low concentrations and with high selectivity. The approach incorporates advances in solid phase extraction and exploits novel coatings for optical waveguides. The method is differentiated from most other detection methods because it provides chemical signatures for unambiguous identification of compounds. Additional advantages include: compact/portable size, near real-time results, readily automated, minimal expertise required, reagent- free, solvent-free and embedded telemetry. The Phase I study successfully demonstrated the method's feasibility by detecting chlorinated vapor intrusion compounds at low parts per billion levels. A Phase II follow on study is proposed emphasizing understanding the capabilities of key components used for selective detection and addresses the methods needed for assembly of a function portable device. The study will characterize the devices' performance at a Superfund field site. The impact of this research goes beyond the immediate focus on vapor intrusion monitoring. Improvements in sample preparation methods can be applied wherever portable on-site analysis is desired, such as: workplace safety, forensic analysis, food safety, pharmaceutical manufacture, and drinking water qualities.

描述：蒸气侵入是挥发性有机化学物质从地下迁移到上覆盖建筑物的迁移，这是大量人口暴露于有害化学物质的主要原因。为了评估暴露于蒸气侵入化合物的健康影响，需要对室内空气进行监测。常规的蒸气侵入监测是通过现场样本收集进行的，然后进行实验室分析。常规方法的缺点包括：需要取回样本，延长的处理时间，无法充分跟踪浓度随时间的浓度和高成本的变化。可以安装或操作的便携式分析方法需要连续和/或短期测量来解决这些问题。这一II阶段小型企业创新研究提案通过基于紧凑的基于墨盒的采样和检测方法来满足这一需求，当与便携式傅立叶变换红外（FTIR）光谱仪结合使用时，可以在低浓度和高选择性下检测蒸气侵入化合物。该方法结合了固相提取的进步，并利用新颖的涂层用于光学波导。该方法与大多数其他检测方法有所不同，因为它为化合物提供了化学特征。其他优点包括：紧凑/便携式尺寸，接近实时结果，易于自动化，最少的专业知识，无试剂，无溶剂，无溶剂和嵌入式遥测。第一阶段的研究成功地证明了该方法的可行性，通过以每十亿个水平的低部分检测氯化蒸气侵入化合物。提出了II阶段的研究，强调了解用于选择性检测的关键组件的功能，并解决了组装功能便携式设备所需的方法。该研究将在超级基金现场站点的设备性能表征。这项研究的影响超出了直接关注蒸气入侵监测的关注。可以在需要便携式现场分析的地方进行样品制备方法的改进，例如：工作场所安全，法医分析，食品安全，药品制造和饮用水品质。