Knowledge Resource Center for Ecological Environment in Arid Area
| DOI | 10.2172/10132560 |
| 报告编号 | DOE/CH--9215 |
| 来源ID | OSTI_ID: 10132560 |
| Assessment of subsurface VOCs using a chemical microsensor array. Final report | |
| Batterman, S.A.; Zellers, E.T. [Michigan Univ., Ann Arbor, MI (United States). School of Public Health] | |
| 英文摘要 | This report describes the results of laboratory investigations of several performance parameters relevant to surface-acoustic-wave (SAW) chemical sensor arrays for the measurement of volatile organic compounds (VOCs) in contaminated soil and groundwater. The small size, low cost, sensitivity and selectivity of such instruments promise improvements in the quality and quantity of data used to guide site assessment and restoration efforts. In this investigation, calibrations were performed for 15 different coated SAW sensors. Each sensor was exposed to six VOCs selected to represent three chemical classes of contaminants that are commonly found at waste sites (i.e., aliphatic, aromatic and chlorinated hydrocarbons). A new pattern recognition method was developed for determining which coated sensors would maximize the selectivity and accuracy of quantitation for a given set of vapor contaminants. Using this method, an optimal subwet of four coated sensors was selected for testing in a prototype microsensor instrument. Additional laboratory experiments were performed with this optimized array to assess the limits of detection and linear response ranges for the representative vapors, as well as the additivity of responses to vapors in binary mixtures, temperature and humidity effects, aging effects, and other performance parameters related to the application of this technology to soil and groundwater VOC monitoring. Results demonstrate that SAW microsensor arrays can identify and quantify specific VOCs at concentrations in the {mu}g/L to mg/L range when present alone or in simple (e.g., binary) mixtures. SAW sensor technology offers a potentially effective alternative to existing field instrumentation for headspace analysis, soil vapor monitoring, and vacuum extraction process monitoring of VOCs in subsurface media. |
| 出版年 | 1993 |
| 报告类型 | Technical Report |
| 语种 | 英语 |
| 国家 | 美国 |
| 来源学科分类 | 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY ; 11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS ; 54 ENVIRONMENTAL SCIENCES ; REMEDIAL ACTION ; SITE CHARACTERIZATION ; MONITORING ; MEASURING INSTRUMENTS ; PERFORMANCE TESTING ; VOLATILE MATTER ; CHEMICAL ANALYSIS ; LAND RECLAMATION ; SOIL CHEMISTRY ; WATER CHEMISTRY ; ACOUSTIC TESTING ; ECOLOGICAL CONCENTRATION ; DESIGN ; ORGANIC SOLVENTS ; RADIOACTIVE WASTES ; REGRESSION ANALYSIS ; EXPERIMENTAL DATA ; PROGRESS REPORT 400102 ; 054000 ; 540250 ; CHEMICAL AND SPECTRAL PROCEDURES ; HEALTH AND SAFETY ; SITE RESOURCE AND USE STUDIES |
| URL | http://www.osti.gov/scitech/servlets/purl/10132560 |
| 资源类型 | 科技报告 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/265131 |
| 推荐引用方式 GB/T 7714 | Batterman, S.A.,Zellers, E.T. [Michigan Univ., Ann Arbor, MI . Assessment of subsurface VOCs using a chemical microsensor array. Final report,1993. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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