Applying open-path FTIR with computed tomography to evaluate personal exposures. Part 1: Simulation studies

Annals of Occupational Hygiene

Volumn 49, Issue 1, 2005, Pages 61-71

  Wu, Chang Fu ^a   Yost, Michael G ^a   Hashmonay, Ram A ^b   Larson, Timothy V ^c   Guffey, Steven E ^d  

^a UNIVERSITY OF WASHINGTON   (United States)

^b ARCADIS   (United States)

^c University of Washington   (United States)

^d WEST VIRGINIA UNIVERSITY   (United States)

Author keywords

Computed tomography; Open path FTIR; Optical remote sensing; Personal exposure; Radial plume mapping

Indexed keywords

ALGORITHMS; COMPUTER SIMULATION; COMPUTERIZED TOMOGRAPHY; FOURIER TRANSFORM INFRARED SPECTROSCOPY; THERMAL PLUMES; EXPOSURE CONTROLS; GAUSSIAN BEAMS; INDUSTRIAL HYGIENE; REMOTE SENSING; TOMOGRAPHY;

GAUSSIAN PLUMES; NINE-BEAM RADIAL GEOMETRY; PATH-INTEGRATED CONCENTRATIONS (PIC); SMOOTH BASIS FUNCTION MINIMIZATION ALGORITHMS;

INDUSTRIAL HYGIENE; COMPUTERIZED TOMOGRAPHY;

ALGORITHM; ARTICLE; CALCULATION; COMPUTER ASSISTED TOMOGRAPHY; CONCENTRATION RESPONSE; CORRELATION ANALYSIS; EVALUATION; GEOMETRY; HUMAN; INDUSTRIAL HYGIENE; INFRARED SPECTROSCOPY; MATHEMATICAL ANALYSIS; MATHEMATICAL COMPUTING; MEASUREMENT; NORMAL DISTRIBUTION; OCCUPATIONAL EXPOSURE; OPEN PATH FOURIER TRANSFORM INFRARED SPECTROSCOPY; PRIORITY JOURNAL; SIMULATION; SMOOTH BASIS FUNCTION MINIMIZATION; THEORETICAL MODEL;

ALGORITHMS; COMPUTER SIMULATION; HUMANS; MODELS, THEORETICAL; NORMAL DISTRIBUTION; OCCUPATIONAL EXPOSURE; SPECTROSCOPY, FOURIER TRANSFORM INFRARED; TOMOGRAPHY, X-RAY COMPUTED;

CONCORDANCE CORRELATION FACTORS; FOURIER TRANSFORM INFRA REDS; OPEN PATH FTIR; OPTICAL REMOTE SENSING; PATH-INTEGRATED CONCENTRATIONS; PERSONAL EXPOSURES; RADIAL PLUME MAPPINGS; SMOOTH BASIS FUNCTION MINIMIZATION ALGORITHMS;

EID: 14944372783     PISSN: 00034878     EISSN: None     Source Type: Journal    
DOI: 10.1093/annhyg/meh078     Document Type: Article

References (28)

1. Bhattacharyya R, Todd LA. (1997) Spatial and temporal visualization of gases and vapours in air using computed tomography. Numerical studies. Ann Occup Hyg; 41: 105-22.
2. Chatfield C. (1996) The analysis of time series: an introduction. London; New York: Chapman & Hall. ISBN 0412716402.
3. De Boor C. (1978) A practical guide to splines. New York: Springer-Verlag. ISBN 0387903569.
4. Drescher AC, Gadgil AJ, Price PN et al. (1996) Novel approach for tomographic reconstruction of gas concentration distributions in air: use of smooth basis functions and simulated annealing. Atmos Environ; 30: 929-40.
5. Drescher AC, Park DY, Yost MG et al. (1997) Stationary and time-dependent indoor tracer-gas concentration profiles measured by OP-FTIR remote sensing and SBFM-computed tomography. Atmos Environ; 31: 727-40.
6. Farhat SK, Todd LA. (2000) Evaluation of open-path FTIR spectrometers for monitoring multiple chemicals in air. Appl Occup Environ Hyg; 15: 911-23.
7. Fisher L, Van Belle G. (1993) Biostatistics: a methodology for the health sciences. New York: Wiley. ISBN 0471584657.
8. Francis M, Selvin S, Spear R et al. (1989) The effect of autocorrelation on the estimation of workers' daily exposures. Am Ind Hyg Assoc J; 50: 37-43.
9. Hashmonay RA, Yost MG. (1999) Innovative approach for estimating fugitive gaseous fluxes using computed tomography and remote optical sensing techniques. J Air Waste Manage Assoc; 49: 966-72.
10. Hashmonay RA, Yost MG, Wu CF. (1999) Computed tomography of air pollutants using radial scanning path-integrated optical remote sensing. Atmos Environ; 33: 267-74.
11. Hutchinson TP, Lai CD. (1991) The engineering statistician's guide to continuous bivariate distributions. Adelaide, SA: Rumsby Scientific Publishing ISBN 0646024132.
12. Levine SP, Ying LS, Strang CR et al. (1989) Advantages and disadvantages in the use of fourier transform infrared (FTIR) and filter infrared (FIT) spectrometers for monitoring airborne gases and vapors of industrial hygiene concern. Appl Ind Hyg; 4: 180.
13. Oldham PD, Roach SA. (1952) A sampling procedure for measuring industrial dust exposure. Br J Ind Med; 10: 227.
14. Park DY, Yost MG, Levine SP. (1997) Evaluation of virtual source beam configurations for rapid tomographic reconstruction of gas and vapor concentrations in workplaces. J Air Waste Manage Assoc; 47: 582-91.
15. Patterson HS. (1939) Bull Insn Min Metall; 417.
16. Perkins JL. (1997) Modern industrial hygiene. New York: Van Nostrand Reinhold. ISBN 0442021054.
17. Ross KR, Todd LA. (2002) Field evaluation of a transportable open-path FTIR spectrometer for real-time air monitoring. Appl Occup Environ Hyg; 17: 131-43.
18. Samanta A, Todd LA. (1996) Mapping air contaminants indoors using a prototype computed tomography system. Ann Occup Hyg; 40: 675-91.
19. Sigrist MW. (1994) Air monitoring by spectroscopic techniques. New York: Wiley. ISBN 0471558753.
20. Todd L, Leith D. (1990) Remote-sensing and computed-tomography in industrial-hygiene. Am Ind Hyg Assoc J; 51: 224-33.
21. Tsai MY, Yost MG, Wu CF et al. (2001) Line profile reconstruction: validation and comparison of reconstruction methods. Atmos Environ; 35: 4791-9.
22. Wu CF, Yost MG, Hashmonay RA et al. (2004) Applying open-path FTIR with computed tomography to evaluate personal exposures. Part 2: experimental studies. Ann Occup Hyg; in press.
23. Wu CF, Yost MG, Hashmonay RA et al. (2003a) Path concentration profile reconstruction of optical remote sensing measurements using polynomial curve fitting procedures. Atmos Environ; 37: 1879-88.
24. Wu CF, Yost MG, Hashmonay RA et al. (1999) Experimental evaluation of a radial beam geometry for mapping air pollutants using optical remote sensing and computed tomography. Atmos Environ; 33: 4709-16.
25. Wu CF, Yost MG, Varr J et al. (2003b) Applying open-path FTIR with a bi-beam strategy to evaluate personal exposure in indoor environments: Experimental results of a validation study. AIHA Journal; 64: 181-8.
26. Yost MG, Gadgil AJ, Drescher AC et al. (1994) Imaging indoor tracer-gas concentrations with computed tomography: experimental results with a remote sensing FTIR system. Am Ind Hyg Assoc J; 55: 395-402.
27. Yost MG, Hashmonay RA, Zhou Y et al. (1999) Estimating maximum concentrations for open path monitoring along a fixed beam path. J Air Waste Manage Assoc; 49: 424-33.
28. Yost MG, Xiao HK, Spear RC et al. (1992) Comparative testing of an FTIR remote optical sensor with area samplers in a controlled ventilation chamber. Am Ind Hyg Assoc J; 53: 611-16.