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J Occup Health year 2004 volume 46 number 6 page 479 - 485
Classification Original
Title Field Evaluation of a Passive Sampler for Assessing 2-Ethoxyethyl Acetate Exposures
Author Tung-Sheng SHIH1, Ho-Yuan CHANG2, Hung-Hsin LIU3, Yi-Shiao HUNG4 and Saou-Hsing LIOU5, 6
Organization 1Institute of Occupational Safety and Health, Council of Labor Affairs, 2Department of Environmental and Occupational Health, National Cheng-Kung University Medical College, 3Department of Industrial Safety and Hygiene, Chung Hwa College of Medical Technology, 4Center for Environmental, Safety and Health Technology, Industrial Technology Research Institute, 5Department of Public Health, National Defense Medical Center and 6Division of Environmental Health and Occupational Medicine, NHRI, Taiwan Republic of China
Keywords 2-Ethoxy ethyl acetate, Exposure assessment, Permissible exposure limits
Correspondence S.-H. Liou, School of Public Health, National Defense Medical Center, P.O. Box 90048-509, Neihu, Taipei, Taiwan 114, R.O.C. (e-mail: shliou@ndmctsgh.edu.tw)
Abstract Field Evaluation of a Passive Sampler for Assessing 2-Ethoxyethyl Acetate Exposures: Tung-Sheng Shih, et al. Institute of Occupational Safety and Health, Council of Labor Affairs, Taiwan-This paper presents a field evaluation of a passive badge for measuring 2-ethoxyethyl acetate (2-EEAc) in a humid working environment. Forty-eight pairs of side-by-side active/passive 8-h full-shift personal samples were collected to evaluate the performance of a passive badge for monitoring 2-EEAc with the co-exposure of toluene and methyl iso-butyl ketone (MIBK) in a warm and humid workplace. Sixteen pairs of side-by-side passive badges, active charcoal tubes, and active charcoal tube with drying tube samples were also compared to evaluate the humidity effect in sampling. No statistical difference was found between the passive and active samples in assessing 2-EEAc. Linear regression showed the correlation to be high (r=0.987, slope=1.018, n=48) over the range 0.42-41.5 ppm. The mean concentration difference was 0.53 ppm and the mean relative error was 5.39%. Close correlation was also found between passive and active samples for assessing both toluene (r=0.949, slope=0.918, n=16), and MIBK (r=0.943, slope=1.098, n=16). Similar high correlation (r>0.962, n=16) was found among passive badges, active charcoal tubes, and active charcoal tube with drying tube samples. The humidity effect and the interference of co-exposure of polar and non-polar solvents were insignificant at a low sampling rate (26.6 ml/min) in assessing 2-EEAc exposures. The use of the passive samplers produces comparable findings to that of active sampling.