The Experts below are selected from a list of 66 Experts worldwide ranked by ideXlab platform
Edo D. Pellizzari - One of the best experts on this subject based on the ideXlab platform.
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Indoor/outdoor, and Personal Monitor and breath analysis relationships for selected volatile organic compounds measured at three homes during New Jersey TEAM-1987.
Journal of Exposure Science and Environmental Epidemiology, 1991Co-Authors: Paul J. Lioy, Wallace L, Edo D. PellizzariAbstract:: Indoor/outdoor relationships were identified for selected volatile organic compounds over the course of five consecutive days in three homes. Indoor sources of individual compounds were meant in one or more homes. Personal Monitoring samples and breath analyses were obtained from volunteers in each home. A period of outdoor air stagnation occurred during one evening and morning of the study. Two results from the study that must be considered in future investigations of VOC exposure are 1) periods conducive to accumulating outdoor VOC can make substantial contributions to indoor values and 2) for homes without indoor sources of individual compounds the indoor values are driven by the outdoor values of a VOC. The primary results do not contradict previous TEAM studies which indicate that when indoor sources of a particular VOC are present the Personal exposure and microenvironmental exposures are effected primarily by indoor contributions. Future comparisons of external exposure values with human breath analysis studies must be designed to more closely reflect the time interval associated with the half time of elimination for a particular VOC.
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indoor outdoor and Personal Monitor and breath analysis relationships for selected volatile organic compounds measured at three homes during new jersey team 1987
Journal of Exposure Science and Environmental Epidemiology, 1991Co-Authors: Paul J. Lioy, L Wallace, Edo D. PellizzariAbstract:: Indoor/outdoor relationships were identified for selected volatile organic compounds over the course of five consecutive days in three homes. Indoor sources of individual compounds were meant in one or more homes. Personal Monitoring samples and breath analyses were obtained from volunteers in each home. A period of outdoor air stagnation occurred during one evening and morning of the study. Two results from the study that must be considered in future investigations of VOC exposure are 1) periods conducive to accumulating outdoor VOC can make substantial contributions to indoor values and 2) for homes without indoor sources of individual compounds the indoor values are driven by the outdoor values of a VOC. The primary results do not contradict previous TEAM studies which indicate that when indoor sources of a particular VOC are present the Personal exposure and microenvironmental exposures are effected primarily by indoor contributions. Future comparisons of external exposure values with human breath analysis studies must be designed to more closely reflect the time interval associated with the half time of elimination for a particular VOC.
Paul J. Lioy - One of the best experts on this subject based on the ideXlab platform.
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Indoor/outdoor, and Personal Monitor and breath analysis relationships for selected volatile organic compounds measured at three homes during New Jersey TEAM-1987.
Journal of Exposure Science and Environmental Epidemiology, 1991Co-Authors: Paul J. Lioy, Wallace L, Edo D. PellizzariAbstract:: Indoor/outdoor relationships were identified for selected volatile organic compounds over the course of five consecutive days in three homes. Indoor sources of individual compounds were meant in one or more homes. Personal Monitoring samples and breath analyses were obtained from volunteers in each home. A period of outdoor air stagnation occurred during one evening and morning of the study. Two results from the study that must be considered in future investigations of VOC exposure are 1) periods conducive to accumulating outdoor VOC can make substantial contributions to indoor values and 2) for homes without indoor sources of individual compounds the indoor values are driven by the outdoor values of a VOC. The primary results do not contradict previous TEAM studies which indicate that when indoor sources of a particular VOC are present the Personal exposure and microenvironmental exposures are effected primarily by indoor contributions. Future comparisons of external exposure values with human breath analysis studies must be designed to more closely reflect the time interval associated with the half time of elimination for a particular VOC.
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indoor outdoor and Personal Monitor and breath analysis relationships for selected volatile organic compounds measured at three homes during new jersey team 1987
Journal of Exposure Science and Environmental Epidemiology, 1991Co-Authors: Paul J. Lioy, L Wallace, Edo D. PellizzariAbstract:: Indoor/outdoor relationships were identified for selected volatile organic compounds over the course of five consecutive days in three homes. Indoor sources of individual compounds were meant in one or more homes. Personal Monitoring samples and breath analyses were obtained from volunteers in each home. A period of outdoor air stagnation occurred during one evening and morning of the study. Two results from the study that must be considered in future investigations of VOC exposure are 1) periods conducive to accumulating outdoor VOC can make substantial contributions to indoor values and 2) for homes without indoor sources of individual compounds the indoor values are driven by the outdoor values of a VOC. The primary results do not contradict previous TEAM studies which indicate that when indoor sources of a particular VOC are present the Personal exposure and microenvironmental exposures are effected primarily by indoor contributions. Future comparisons of external exposure values with human breath analysis studies must be designed to more closely reflect the time interval associated with the half time of elimination for a particular VOC.
L Wallace - One of the best experts on this subject based on the ideXlab platform.
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indoor outdoor and Personal Monitor and breath analysis relationships for selected volatile organic compounds measured at three homes during new jersey team 1987
Journal of Exposure Science and Environmental Epidemiology, 1991Co-Authors: Paul J. Lioy, L Wallace, Edo D. PellizzariAbstract:: Indoor/outdoor relationships were identified for selected volatile organic compounds over the course of five consecutive days in three homes. Indoor sources of individual compounds were meant in one or more homes. Personal Monitoring samples and breath analyses were obtained from volunteers in each home. A period of outdoor air stagnation occurred during one evening and morning of the study. Two results from the study that must be considered in future investigations of VOC exposure are 1) periods conducive to accumulating outdoor VOC can make substantial contributions to indoor values and 2) for homes without indoor sources of individual compounds the indoor values are driven by the outdoor values of a VOC. The primary results do not contradict previous TEAM studies which indicate that when indoor sources of a particular VOC are present the Personal exposure and microenvironmental exposures are effected primarily by indoor contributions. Future comparisons of external exposure values with human breath analysis studies must be designed to more closely reflect the time interval associated with the half time of elimination for a particular VOC.
T R Yip - One of the best experts on this subject based on the ideXlab platform.
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Monitoring Personal fine particle exposure with a particle counter
Journal of Exposure Analysis and Environmental Epidemiology, 1999Co-Authors: Markus Brauer, R D Hirtle, A C Hall, T R YipAbstract:Numerous epidemiological studies have demonstrated associations between ambient combustion-source particulates and adverse health outcomes. In order to better understand exposure to particles, we evaluated a portable particle counter for its ability to measure short-term peaks in Personal particle exposure associated with various activities, such as proximity to vehicular traffic. In a series of laboratory and field measurements, a hand-held particle counter was evaluated by collecting simultaneous filter samples of particulate matter less than 2.5 mu m (PM2.5) using a Personal Monitor. Time activity information was collected using a Personal Digital Assistant (PDA) which allows for linking of exposure events and particle measurements with 1 min temporal resolution. Laboratory and field experiments comparing the particle counter with the Personal PM2.5 samples indicated low correlations (R(2)less than or equal to 0.39) for all size ranges. Despite these rather poor correlations, field measurements collected during different commuting modes (walking/cycling, car, bus, subway) and in different microenvironments indicated the ability of the particle counter to measure short-term particle exposures, especially those associated with combustion sources. Stratifying the measured particle counts by proximity to different particle sources enabled us to identify activities/microenvironments which were associated with higher exposures. Outdoor particle counts were significantly higher than indoor counts for particles smaller than 5.0 mu m. Significantly elevated particle exposures were associated with proximity to environmental tobacco smoke (ETS), cooking emissions, wood smoke and with travel in vehicles powered with internal combustion engines.
Dina M Sassone - One of the best experts on this subject based on the ideXlab platform.
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Comparison of extremely low frequency (ELF) magnetic field Personal exposure Monitors
Journal of Exposure Science & Environmental Epidemiology, 2002Co-Authors: James J Mcdevitt, Patrick N Breysse, Joseph D Bowman, Dina M SassoneAbstract:The MultiWave^® System III (MW III), a recently developed Personal Monitor for extremely low frequency (ELF) magnetic fields, was compared with the standard EMDEX Lite (Electric and Magnetic Field Digital Exposure System), the type of Monitor widely used in epidemiology and other exposure assessments. The MW III captures three-axis magnetic field waveforms for the calculation of many exposure metrics, while the EMDEX Monitors measure only the root-mean-squared (RMS) vector magnitude (or resultant). Thirty-eight partial period Personal samples were Monitored in six different job classifications. The sampling time for each Personal sample ranged from 90 to 133 min, with a mean sample time of 110 min. The EMDEX Lite and MW III were evaluated by comparing the maximum and partial period time-weighted average (TWA) of the ELF magnitude. TWA exposures measured for the 38 partial period samples by the EMDEX Lite ranged from 1.2 to 65.3 mG, with a mean of 18.1 mG, while corresponding values for the MW III ranged from 1.1 to 65.8 mG, with a mean of 17.7 mG. The maximum magnetic field exposures measured for the 38 partial period Personal samples by the EMDEX Lite ranged from 27.0 to 420.2 mG, with a mean of 216.3 mG, while corresponding values for the MW III ranged from 40.2 to 1311.8 mG, with a mean of 368.4 mG. The maximum and TWA ELF magnetic field exposures measured by the EMDEX Lite and MW III were compared using a two-tailed, paired t -test. Analyses indicate that there was no significant difference in the TWA magnetic field magnitude measured by the EMDEX Lite and MW III. On the other hand, the EMDEX Lite reported significantly lower ( P =0.002) maximum magnetic field measurements compared to the MW III. From a detailed analysis of the time traces, the EMDEX Lite appears to measure the ELF magnitude inaccurately when the field changes rapidly over a 4-s sampling interval. The results of this comparison suggest that the standard EMDEX Lite and MW III provide similar measure of the TWA magnetic field in a variety of occupational settings and ELF magnetic field magnitudes. However, the EMDEX Lite underestimates maximum exposures when compared to the MW III.