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DOI | 10.1080/02786826.2017.1386766 |
Size-selective sampling performance of six low-volume "total" suspended particulate (TSP) inlets | |
Vanderpool, Robert W.1; Krug, Jonathan D.1; Kaushik, Surender1; Gilberry, Jerome2,3; Dart, Andrew2; Witherspoon, Carlton L.3 | |
发表日期 | 2018 |
ISSN | 0278-6826 |
卷号 | 52期号:1页码:98-113 |
英文摘要 | Several low-volume inlets (flow rates <= 16.7 liters per minute (Lpm)) are commercially available as components of low-cost, portable ambient particulate matter samplers. Because the inlets themselves do not contain internal fractionators, they are often assumed to representatively sample "total" mass concentrations from the ambient air, independent of aerodynamic particle size and wind speed. To date, none of these so-called "TSP" inlets have been rigorously tested under controlled conditions. To determine their actual size-selective performance under conditions of expected use, wind tunnel tests of six commonly used omnidirectional, low-volume inlets were conducted using solid, polydisperse aerosols at wind speeds of 2, 8, and 24 km/h. With the exception of axially-oriented, isokinetic sharp-edge nozzles operating at 5 and 10 Lpm, all low-volume inlets showed some degree of nonideal sampling performance as a function of aerodynamic particle size and wind speed. Depending upon wind speed and assumed ambient particle size distribution, total mass concentration measurements were estimated to be negatively biased by as much as 66%. As expected from particle inertial considerations, inlet efficiency tended to degrade with increasing wind speed and particle size, although some exceptions were noted. The implications of each inlet's non-ideal behavior are discussed with regards to expected total mass concentration measurement during ambient sampling and the ability to obtain representative sampling for size ranges of interest, such as PM2.5 and PM10. Overall test results will aid in low-volume inlet selection and with proper interpretation of results obtained with their ambient field use. |
语种 | 英语 |
WOS记录号 | WOS:000427366900011 |
来源期刊 | AEROSOL SCIENCE AND TECHNOLOGY |
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/58592 |
作者单位 | 1.US EPA, Res Triangle Pk, NC 27711 USA; 2.RTI Int, Res Triangle Pk, NC USA; 3.Alion Sci & Technol, Durham, NC USA |
推荐引用方式 GB/T 7714 | Vanderpool, Robert W.,Krug, Jonathan D.,Kaushik, Surender,et al. Size-selective sampling performance of six low-volume "total" suspended particulate (TSP) inlets[J]. 美国环保署,2018,52(1):98-113. |
APA | Vanderpool, Robert W.,Krug, Jonathan D.,Kaushik, Surender,Gilberry, Jerome,Dart, Andrew,&Witherspoon, Carlton L..(2018).Size-selective sampling performance of six low-volume "total" suspended particulate (TSP) inlets.AEROSOL SCIENCE AND TECHNOLOGY,52(1),98-113. |
MLA | Vanderpool, Robert W.,et al."Size-selective sampling performance of six low-volume "total" suspended particulate (TSP) inlets".AEROSOL SCIENCE AND TECHNOLOGY 52.1(2018):98-113. |
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