Document Type : Original Article

Authors

• Masoud Rismanchian ¹
• Farideh Golbabaei ¹
• Yadollah Mortazavi ²
• Gholamhossein Pourtaghi ³
• Abbas Rahimi Foroushani ⁴

¹ Department of Occupational Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran

² College of Engineering, School of Chemical Engineering, University of Tehran, Tehran, Iran

³ Health Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran

⁴ Epidemiology and Biostatistics Department, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran

Keywords

• Aims: The aim of this study was to evaluate the performance of photoionization detector (PID) system as a substitution for gas chromatography in the measurement of a 3 xylene isomer mixtures as a representative of the volatile organic compounds in ph
• and 80%). Results: The correlation between the PID results and the National Institue of Occupational Safety and Health (NIOSH) reference method results in an atmosphere with relative humidity of 0%
• 20%
• and 80% were good and
• respectively
• were 0.993
• 0.992
• and 0.991 and total correlation was 0.989. The paired t test indicates a significant difference between actual concentrations in reference method and the extracted concentration from PID. Conclusions: Although the results presented by PID in the pres
• the equipment response is linear. So
• the results are acceptable in photocatalytic studies in case the contaminant concentration is measured by the same equipment either before or after the reactor for calculation of the removal efficiency. PID calibration with the test material(s) is re