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DOI | 10.1039/c3em00128h |
Quantitative passive soil vapor sampling for VOCs- part 2: laboratory experiments | |
McAlary, Todd1,2; Groenevelt, Hester1; Seethapathy, Suresh2; Sacco, Paolo3; Crump, Derrick4; Tuday, Michael5; Schumacher, Brian6; Hayes, Heidi7; Johnson, Paul8; Gorecki, Tadeusz2 | |
发表日期 | 2014-03-01 |
ISSN | 2050-7887 |
卷号 | 16期号:3页码:491-500 |
英文摘要 | Controlled laboratory experiments were conducted to demonstrate the use of passive samplers for soil vapor concentration monitoring. Five different passive samplers were studied (Radiello, SKC Ultra, Waterloo Membrane Sampler, ATD tubes and 3M OVM 3500). Ten different volatile organic compounds were used of varying classes (chlorinated ethanes, ethanes, and methanes, aliphatics and aromatics) and physical properties (vapor pressure, solubility and sorption). Samplers were exposed in randomized triplicates to concentrations of 1, 10 and 100 ppm, with a relative humidity of similar to 80%, a temperature of similar to 24 degrees C, and a duration of 30 minutes in a chamber with a face velocity of about 5 cm min(-1). Passive samplers are more commonly used for longer sample durations (e.g., 8 hour workday) and higher face velocities (>600 cm min(-1)), so testing to verify the performance for these conditions was needed. Summa canister samples were collected and analyzed by EPA Method TO-15 to establish a baseline for comparison for all the passive samplers. Low-uptake rate varieties of four of the samplers were also tested at 10 ppm, under two conditions; with 5 cm min(-1) face velocity and stagnant conditions to assess whether low or near-zero face velocities would result in a low bias from the starvation effect. The results indicate that passive samplers can provide concentration measurements with accuracy (mostly within a factor of 2) and precision (RSD < 15%) comparable to conventional Summa canister samples and EPA Method TO-15 analysis. Some compounds are challenging for some passive samplers because of uncertainties in the uptake rates, or challenges with retention or recovery. |
语种 | 英语 |
WOS记录号 | WOS:000333226700014 |
来源期刊 | ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS
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来源机构 | 美国环保署 |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/61311 |
作者单位 | 1.Geosyntec Consultants Inc, Guelph, ON N1G 5G3, Canada; 2.Univ Waterloo, Waterloo, ON N2L 3G1, Canada; 3.Fdn Salvatore Maugeri, Padua, Italy; 4.Cranfield Univ, Cranfield MK43 0AL, Beds, England; 5.Columbia Analyt Serv, Simi Valley, CA USA; 6.US EPA, Las Vegas, NV 89193 USA; 7.Eurofins Air Tox Inc, Folsom, CA USA; 8.Arizona State Univ, Tempe, AZ USA |
推荐引用方式 GB/T 7714 | McAlary, Todd,Groenevelt, Hester,Seethapathy, Suresh,et al. Quantitative passive soil vapor sampling for VOCs- part 2: laboratory experiments[J]. 美国环保署,2014,16(3):491-500. |
APA | McAlary, Todd.,Groenevelt, Hester.,Seethapathy, Suresh.,Sacco, Paolo.,Crump, Derrick.,...&Gorecki, Tadeusz.(2014).Quantitative passive soil vapor sampling for VOCs- part 2: laboratory experiments.ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS,16(3),491-500. |
MLA | McAlary, Todd,et al."Quantitative passive soil vapor sampling for VOCs- part 2: laboratory experiments".ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS 16.3(2014):491-500. |
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