Volume 13, Issue 2 (3-2017)
HSR 2017, 13(2): 170-174 |
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Pakfard H, Amin M M, Hajizadeh Y, Pourzamani H. An Investigation into Benzene Levels of Air in One of the High Traffic Routs of Isfahan, Iran, by Solid-Phase Microextraction Method. HSR 2017; 13 (2) :170-174
URL: http://hsr.mui.ac.ir/article-1-940-en.html
URL: http://hsr.mui.ac.ir/article-1-940-en.html
1- MSc Student, School of the Environment and Energy, Science and Research Branch, Islamic Azad University, Tehran, Iran
2- Professor, Environment Research Center AND Department of Environmental Health Engineering, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran
3- Assistant Professor, Environment Research Center AND Department of Environmental Health Engineering, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran
2- Professor, Environment Research Center AND Department of Environmental Health Engineering, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran
3- Assistant Professor, Environment Research Center AND Department of Environmental Health Engineering, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran
Abstract: (788 Views)
Background: Solid-phase microextraction (SPME) has received much attention as a new approach for air sampling. SPME is an efficient solventless sample preparation method which can be easily applied to a variety of chemical compounds.Methods: In this study, the efficiency and accuracy of SPME method for analysis of benzene exposure inside public vehicles was investigated and compared with results of present analytical and separation methods. In the first phase, different concentrations of benzene were standardized in specific volume of air and the calibration graph was drawn. In the next stage, SPME samplers were installed for specified periods inside and outside the bus. Then, the average concentration of benzene in the air was measured by injection of SPME fiber into the gas chromatography (GC) device.Findings: Maximum concentration of benzene was about 26 μg/m3 inside the bus and 8 μg/m3 outside the bus. The comparison between measured values of SPME method and adsorbent tubes method provided a high degree of correlation (R2 = 0.98), indicating that SPME method can measure benzene concentration with reasonable accuracy.Conclusion:According to the present study results, a noticeable increase in the concentration of benzene was observed inside the bus during summer which exceeded the standard level and the measured values of benzene outside and inside the bus during spring, which was at the standard level. The results of the measurements using the conventional method of pumps and absorbent and SPME showed acceptable similarity.
Type of Study: Research |
Subject:
education health and promotion
Received: 2020/07/16 | Accepted: 2021/01/10 | Published: 2021/01/10
Received: 2020/07/16 | Accepted: 2021/01/10 | Published: 2021/01/10
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