Mohammad Azimi, Yasin Mansouri, Vida Rezai Hachasu, Fateme Aminaei, Hamideh Mihanpour, Mohammad Javad Zare Sakhvidi,
Volume 10, Issue 1 (7-2018)
Abstract
Abstract
Background and purpose: Particulate matter air pollution is one of the most important risk factors for cardiovascular and respiratory diseases. By increasing the number of tile and ceramic industries in the two past decades, workers in these industries exposed to pathogenic respirable particulate matter pollutants. Therefore, this study aimed to assess respiratory exposure to airborne particles in a tile and ceramic factory was done.
Materials and methods: In This observational study, sampling from Respiratory zone of 93 workers in a tile and ceramic industry for both respirable and inhalable particles were performed. Sampling of inhalable particle based on NIOSH_0500 protocol and respirable particles based on NIOSH_0600 was conducted. Data were analyzed by SPSS 22 software.
Results: 92.47 percent of Workers were exposed to respirable particles less than TLV and 39.8 percent of them were exposed to inhalable particles more than TLV. The maximum concentration of respirable particles 13.04 mg/m3 and inhalable particles 84.88 mg/m3 in respectively reported for crusher unit. The lowest concentration of respirable (0.41 mg/m3) and inhalable (min =1.74 mg/m3) particles were observed in coating line workers division.
Conclusion: Since the workers are exposed to concentrations more than threshold limit value of respirable particles, and especially inhalable particles in some units, appropriate control measures must be considered to prevent possible consequences.
Mr Saeed Shojaee Barjoee, Doctor Hamidreza Azimzadeh, Doctor Asghar Mosleharani, Mr Mohamadreza , Kuchakzadeh,
Volume 11, Issue 3 (12-2019)
Abstract
Introduction: The respiratory system, as one of the most important organs of the human body, is affected by adverse health effects and consequences of particulate matter. this study was performed to purpose determine the occupational exposure of workers to crystalline silica of inhalable dust and determine its health risks.
Method: In this analytical cross-sectional study, sampling was performed in a industrial unit production Khak-e-Chini based on standard methods and individual and environmental sampling methods. Then the obtained data analyzed were in SPSS software version 22 .The risk assessment of
Occupational exposure of workers to crystalline silica was carried out based on the proposed EPA model.
Results: The average exposure of workers to inhalable dust and crystalline silica was measured 4.46 ±1.34 mg/m3 and 0.57±0.10 mg/m3, respectively. The mean environmental concentration of the inhalable particles was 6177.71 µg/m3 and the range of 4088.30- 8289.70 µg/m3. In all occupational groups the risk of cancer was obtained less than 10-6. HQ values for operator one (5.34) and two (4.79) crusher machine, crusher machine loading operator (8.49), dryer operator (1.91), slurry operator (3.01) and filter press operator (1.78) was more than permissible limit.
Conclusion: The average concentration of inhalable dust and crystalline silica was more than permissible limit in this industry. According to the results of the risk assessment, the priority of serious control actions is necessary to reduce the risk of non-cancerous complications in the crushing, drilling, slurry and filter press occupational groups.
