A simple and inexpensive dilution system for the TSI 3007 condensation particle counter

被引:14
作者
Knibbs, Luke D. [1 ]
de Dear, Richard J.
Morawska, Lidia
Coote, Peter M.
机构
[1] Macquarie Univ, Dept Phys Geog, Div Environm & Life Sci, Sydney, NSW 2109, Australia
[2] Queensland Univ Technol, Int Lab Air Qual & Hlth, Brisbane, Qld, Australia
[3] Lear Siegler Australasia, Sydney, NSW, Australia
关键词
TSI; 3007; condensation particle counter; dilution; submicron; particle measurement;
D O I
10.1016/j.atmosenv.2007.03.019
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The aim of this study was to develop a dilution system which would permit the TSI 3007 condensation particle counter (CPC) to operate within its maximum detectable concentration threshold, even when sampling extremely high submicron particle concentrations. The intention of this was to provide a better alternative to coincidence correction factors, which have several limitations; the most significant of which being that they are only applicable to a comparatively low concentration and also that the components of the unit are exposed to concentrations beyond their operating specifications. To achieve the airn, a bifurcation-based system was developed and tested repeatedly at concentrations of unleaded petrol combustion particles up to similar to 8.5 x 10(6) p cm(-3). The benchmark particle concentration was measured by a TSI 3022A CPC. The results of the tests showed that the nominal dilution ratio based on flow partitioning was applicable up to similar to 3.5 x 10(5) pcm(-3), after which particle losses to a capillary tube primarily caused a large increase in apparent dilution. These losses were consistent throughout all tests and allowed the unit to remain below the maximum detection threshold. even under the extreme challenge concentrations encountered. This work represents a useful extension of the operating range of the TSI 3007, without significantly compromising either the quality of data collected or the internal components of the unit. (c) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码:4553 / 4557
页数:5
相关论文
共 16 条
[1]   Ultrafine particulate matter and high-level benzene urban air pollution in relation to oxidative DNA damage [J].
Avogbe, PH ;
Ayi-Fanou, L ;
Autrup, H ;
Loft, S ;
Fayomi, B ;
Sanni, A ;
Vinzents, P ;
Moller, P .
CARCINOGENESIS, 2005, 26 (03) :613-620
[2]  
CLEARY TG, 2004, RESIDENTIAL NUISANCE
[3]   An industrial hygiene survey of an office building in the vicinity of the World Trade Center: Assessment of potential hazards following the collapse of the World Trade Center buildings [J].
Hall, RM ;
Trout, D ;
Earnest, GS .
JOURNAL OF OCCUPATIONAL AND ENVIRONMENTAL HYGIENE, 2004, 1 (05) :D49-D53
[4]   The particle detection efficiency of the TSI-3007 condensation particle counter [J].
Hämeri, K ;
Koponen, IK ;
Aalto, PP ;
Kulmala, M .
JOURNAL OF AEROSOL SCIENCE, 2002, 33 (10) :1463-1469
[5]   Quantitative assessment of the effect of surface deposition and coagulation on the dynamics of submicrometer particles indoors [J].
Jamriska, M ;
Morawska, L .
AEROSOL SCIENCE AND TECHNOLOGY, 2003, 37 (05) :425-436
[6]   A model for determination of motor vehicle emission factors from on-road measurements with a focus on submicrometer particles [J].
Jamriska, M ;
Morawska, L .
SCIENCE OF THE TOTAL ENVIRONMENT, 2001, 264 (03) :241-255
[7]   Indoor and outdoor concentrations of ultrafine particles in some Scandinavian rural and urban areas [J].
Matson, U .
SCIENCE OF THE TOTAL ENVIRONMENT, 2005, 343 (1-3) :169-176
[8]   The mapping of fine and ultrafine particle concentrations in an engine machining and assembly facility [J].
Peters, TM ;
Heitbrink, WA ;
Evans, DE ;
Slavin, TJ ;
Maynard, AD .
ANNALS OF OCCUPATIONAL HYGIENE, 2006, 50 (03) :249-257
[9]   Submicrometer and supermicrometer particulate emission from spark ignition vehicles [J].
Ristovski, ZD ;
Morawska, L ;
Bofinger, ND ;
Hitchins, J .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1998, 32 (24) :3845-3852
[10]  
Thomassen Y, 2006, J ENVIRON MONITOR, V8, P127, DOI [10.1039/b514939h, 10.1039/B514939H]