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Ardalan Soleimanian - One of the best experts on this subject based on the ideXlab platform.

  • occupational exposure to Perchloroethylene in dry cleaning shops in tehran iran
    Industrial Health, 2009
    Co-Authors: Seyed Reza Azimi Pirsaraei, Ali Khavanin, Hassan Asilian, Ardalan Soleimanian
    Abstract:

    Perchloroethylene, the most widely used solvent in dry cleaning, is toxic to the liver, kidneys and central nervous system and may be a human carcinogen. An exposure assessment was carried out in 69 dry-cleaning shops using Perchloroethylene in Tehran city, Iran. The 8-h time weighted average (TWA) breathing zone air samples and end-exhaled air samples were obtained from 179 workers who worked as the job titles included machine operator (n=71), presser (n=63) and counter area (clerk) (n=45). The mean Perchloroethylene concentrations in breathing zone air were 11.5 ppm, 9.6 ppm and 7.2 ppm respectively. The mean Perchloroethylene concentrations in end-exhaled air of the same participants in Saturday morning (prior to shift of workweek) were 1.7 ppm, 1.5 ppm and 1.1 ppm, but in Thursday evening (end of shift at end of workweek) were 2.4 ppm, 2.0 ppm and 1.5 ppm respectively. This study found that, the mean Perchloroethylene concentrations in breathing zone air and end-exhaled air in the dry-cleaning workers were lower than the TLV (25 ppm) and BEI (5 ppm) recommended by ACGIH. Regression analysis showed that the concentration of Perchloroethylene in breathing zone air (TWA) was highly and significantly correlated with the concentration of Perchloroethylene in end-exhaled air in Saturday morning with a regression equation Y=0.147X + 0.031 (r=0.99, p<0.001) and also in Thursday evening with a regression equation Y=0.201X + 0.072 (r=0.98, p<0.001) where X is the concentration of Perchloroethylene in breathing zone air and Y is that the concentration of Perchloroethylene in end-exhaled air. The results also showed the potential utility of measuring the concentration of Perchloroethylene in end-exhaled air as a method for assessing relative exposure in dry cleaning shops which use it.

  • Occupational exposure to Perchloroethylene in dry-cleaning shops in Tehran, Iran.
    Industrial health, 2009
    Co-Authors: Seyed Reza Azimi Pirsaraei, Ali Khavanin, Hassan Asilian, Ardalan Soleimanian
    Abstract:

    Perchloroethylene, the most widely used solvent in dry cleaning, is toxic to the liver, kidneys and central nervous system and may be a human carcinogen. An exposure assessment was carried out in 69 dry-cleaning shops using Perchloroethylene in Tehran city, Iran. The 8-h time weighted average (TWA) breathing zone air samples and end-exhaled air samples were obtained from 179 workers who worked as the job titles included machine operator (n=71), presser (n=63) and counter area (clerk) (n=45). The mean Perchloroethylene concentrations in breathing zone air were 11.5 ppm, 9.6 ppm and 7.2 ppm respectively. The mean Perchloroethylene concentrations in end-exhaled air of the same participants in Saturday morning (prior to shift of workweek) were 1.7 ppm, 1.5 ppm and 1.1 ppm, but in Thursday evening (end of shift at end of workweek) were 2.4 ppm, 2.0 ppm and 1.5 ppm respectively. This study found that, the mean Perchloroethylene concentrations in breathing zone air and end-exhaled air in the dry-cleaning workers were lower than the TLV (25 ppm) and BEI (5 ppm) recommended by ACGIH. Regression analysis showed that the concentration of Perchloroethylene in breathing zone air (TWA) was highly and significantly correlated with the concentration of Perchloroethylene in end-exhaled air in Saturday morning with a regression equation Y=0.147X + 0.031 (r=0.99, p

Canh Tran-minh - One of the best experts on this subject based on the ideXlab platform.

  • Whole-cell biosensor for determination of volatile organic compounds in the form of aerosols.
    Analytica Chimica Acta, 1998
    Co-Authors: Martine Naessens, Canh Tran-minh
    Abstract:

    A biosensor using Chlorella microalgae immobilized on the membrane of an oxygen electrode has been designed to operate in the gas phase for determination of volatile organic compounds in the form of aerosols. Perchloroethylene (tetrachloroethylene) is used as an example to produce aerosols and vapours since it is toxic to the people working in dry-cleaning atmospheres and municipal treatment plants. A home-made controlled atmosphere chamber is constructed for Perchloroethylene detection. Monitoring of Perchloroethylene is achieved by the measurement of oxygen production during the algae photosynthetic process. The use of whole cells as bioreceptors allows the detection of a toxic aerosol in the gas phase without preliminary trapping of the analyte in solution.

Tran Minh Canh - One of the best experts on this subject based on the ideXlab platform.

Seyed Reza Azimi Pirsaraei - One of the best experts on this subject based on the ideXlab platform.

  • occupational exposure to Perchloroethylene in dry cleaning shops in tehran iran
    Industrial Health, 2009
    Co-Authors: Seyed Reza Azimi Pirsaraei, Ali Khavanin, Hassan Asilian, Ardalan Soleimanian
    Abstract:

    Perchloroethylene, the most widely used solvent in dry cleaning, is toxic to the liver, kidneys and central nervous system and may be a human carcinogen. An exposure assessment was carried out in 69 dry-cleaning shops using Perchloroethylene in Tehran city, Iran. The 8-h time weighted average (TWA) breathing zone air samples and end-exhaled air samples were obtained from 179 workers who worked as the job titles included machine operator (n=71), presser (n=63) and counter area (clerk) (n=45). The mean Perchloroethylene concentrations in breathing zone air were 11.5 ppm, 9.6 ppm and 7.2 ppm respectively. The mean Perchloroethylene concentrations in end-exhaled air of the same participants in Saturday morning (prior to shift of workweek) were 1.7 ppm, 1.5 ppm and 1.1 ppm, but in Thursday evening (end of shift at end of workweek) were 2.4 ppm, 2.0 ppm and 1.5 ppm respectively. This study found that, the mean Perchloroethylene concentrations in breathing zone air and end-exhaled air in the dry-cleaning workers were lower than the TLV (25 ppm) and BEI (5 ppm) recommended by ACGIH. Regression analysis showed that the concentration of Perchloroethylene in breathing zone air (TWA) was highly and significantly correlated with the concentration of Perchloroethylene in end-exhaled air in Saturday morning with a regression equation Y=0.147X + 0.031 (r=0.99, p<0.001) and also in Thursday evening with a regression equation Y=0.201X + 0.072 (r=0.98, p<0.001) where X is the concentration of Perchloroethylene in breathing zone air and Y is that the concentration of Perchloroethylene in end-exhaled air. The results also showed the potential utility of measuring the concentration of Perchloroethylene in end-exhaled air as a method for assessing relative exposure in dry cleaning shops which use it.

  • Occupational exposure to Perchloroethylene in dry-cleaning shops in Tehran, Iran.
    Industrial health, 2009
    Co-Authors: Seyed Reza Azimi Pirsaraei, Ali Khavanin, Hassan Asilian, Ardalan Soleimanian
    Abstract:

    Perchloroethylene, the most widely used solvent in dry cleaning, is toxic to the liver, kidneys and central nervous system and may be a human carcinogen. An exposure assessment was carried out in 69 dry-cleaning shops using Perchloroethylene in Tehran city, Iran. The 8-h time weighted average (TWA) breathing zone air samples and end-exhaled air samples were obtained from 179 workers who worked as the job titles included machine operator (n=71), presser (n=63) and counter area (clerk) (n=45). The mean Perchloroethylene concentrations in breathing zone air were 11.5 ppm, 9.6 ppm and 7.2 ppm respectively. The mean Perchloroethylene concentrations in end-exhaled air of the same participants in Saturday morning (prior to shift of workweek) were 1.7 ppm, 1.5 ppm and 1.1 ppm, but in Thursday evening (end of shift at end of workweek) were 2.4 ppm, 2.0 ppm and 1.5 ppm respectively. This study found that, the mean Perchloroethylene concentrations in breathing zone air and end-exhaled air in the dry-cleaning workers were lower than the TLV (25 ppm) and BEI (5 ppm) recommended by ACGIH. Regression analysis showed that the concentration of Perchloroethylene in breathing zone air (TWA) was highly and significantly correlated with the concentration of Perchloroethylene in end-exhaled air in Saturday morning with a regression equation Y=0.147X + 0.031 (r=0.99, p

D Gretch - One of the best experts on this subject based on the ideXlab platform.

  • Hepatic ultrasonic changes in workers exposed to Perchloroethylene.
    Occupational and environmental medicine, 1995
    Co-Authors: Carl A. Brodkin, William E. Daniell, Harvey Checkoway, Diana Echeverria, J Johnson, K Wang, R Sohaey, D Green, C Redlich, D Gretch
    Abstract:

    OBJECTIVE--To determine if subclinical hepatotoxicity is associated with exposure to Perchloroethylene at concentrations commonly experienced in the workplace, and whether surveillance with serum hepatic transaminase activity underestimates such effects. METHODS--Hepatic parenchymal echogenicity on ultrasonography and serum hepatic transaminase activity were compared in 29 community based dry cleaning operators exposed to Perchloroethylene, and a control group of 29 non-exposed laundry workers. Perchloroethylene exposure was assessed by work history and air monitoring. RESULTS--Mean hepatic transaminase activities were minimally increased in dry cleaners compared with laundry workers. Increased alanine aminotransferase activities, between 1.0 and 1.5 times the normal limits, were found in five of 27 (19%) dry cleaners compared with one of 26 (4%) laundry workers. In contrast, diffuse parenchymal changes in echogenicity, as determined by hepatic ultrasonography, were increased nearly twofold in dry cleaners, occurring in 18 of 27 (67%) dry cleaners compared with 10 of 26 (39%) laundry workers (P