Journal of Korean Society of Occupational and Environmental Hygiene (한국산업보건학회지)

Korean Industrial Hygiene Association (한국산업보건학회)
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A Study on Desorption Efficiency of PAHs according to Desorption Solvents by HPLC with Sonication Extraction

탈착용매에 따른 PAHs 흡착매체의 탈착효율 평가 연구

  • Hong, Jwa-ryung (Samsung Health Research Institute, Samsung Electronics Co. Ltd.) ;
  • Lee, Ji-eun (Samsung Health Research Institute, Samsung Electronics Co. Ltd.) ;
  • Jung, Myung-Koo (Samsung Health Research Institute, Samsung Electronics Co. Ltd.) ;
  • Choi, Kwang-min (Samsung Health Research Institute, Samsung Electronics Co. Ltd.)
  • Received : 2016.07.07
  • Accepted : 2016.09.25
  • Published : 2016.09.30
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Abstract

Objectives: In general, NIOSH method 5506 is most widely used for the occupational exposure measurement of PAHs, but 2-4 ring PAHs have poor desorption efficiency, especially for a filter. The purpose of this study was to determine a method to increase the desorption efficiency of 16-PAHs using an ultrasonic extraction procedure. Methods: Test samples prepared spiked XAD-2 tubes and PTFE filters in the range of $0.01-1.0{\mu}g/mL$ for desorption efficiency study. Four different extraction solvents, acetonitrile, acetone, tetrahydrofuran and dichloromethane, were tested in order to select the most suitable solvent for the extraction of the 16 PAHs. The addition of dimethyl sulfoxide and sonication time were considered in order to determine the method with the highest extraction efficiency. All samples were made in three sets and analysis was replicated seven times by HPLC. Results: Acetonitrile and acetone were the optimized as an extraction solvent and desorption efficiency of 2-ring PAHs such as naphthalene, acenaphthylene were increased 3~19% with dimethyl sulfoxide for XAD-2. Acetone was the best extraction solvent for PTFE filter and the desorption efficiency was increased 3~13% for 2- to 4-ring PAHs. The optimum sonication time was 60 minutes and desorption efficiency increased with extraction time. Conclusions: As a result, the best extraction solvent was acetone with dimethyl sulfoxide for ultrasonic extraction procedure and the desorption efficiency of this method was better than NIOSH 5506's. This study could be applied as a method for occupational exposure measurement of PAHs.

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References

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