Journal of Soil and Groundwater Environment (한국지하수토양환경학회지:지하수토양환경)

Korean Society of Soil and Groundwater Environment (한국지하수토양환경학회)
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Effect of Differences between Korean Ministry of Environment Standard and ISO Standard on Determination of Petroleum Hydrocarbon Content in Soil

토양오염공정시험기준과 국제표준간의 분석방법 차이가 유류 정량에 미치는 영향

  • Jung, In-Ho (National Instrumentation Center for Environmental Management, Seoul National University) ;
  • Lee, Goon-Taek (National Instrumentation Center for Environmental Management, Seoul National University) ;
  • Lee, Won-Seok (National Institute for Environmental Research) ;
  • Kim, Yong-Hoon (National Instrumentation Center for Environmental Management, Seoul National University) ;
  • Kim, Bo-Hyun (National Instrumentation Center for Environmental Management, Seoul National University) ;
  • Kim, Ji-In (National Institute for Environmental Research) ;
  • Kim, Bo-Kyong (National Institute for Environmental Research)
  • 정인호 (서울대학교 농생명과학공동기기원) ;
  • 이군택 (서울대학교 농생명과학공동기기원) ;
  • 이원석 (국립환경과학원) ;
  • 김용훈 (서울대학교 농생명과학공동기기원) ;
  • 김보현 (서울대학교 농생명과학공동기기원) ;
  • 김지인 (국립환경과학원) ;
  • 김보경 (국립환경과학원)
  • Received : 2012.07.27
  • Accepted : 2012.09.01
  • Published : 2012.08.31
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Abstract

The main objective of this study is to assess the compatibility between Korean ministry of environment (KME) standard and ISO (KS I ISO) standard for the determination of BTEX and TPH content in soil. We carried out comparison analysis for both methods using CRM and matrix spiked samples. In case of GC-MS analysis for BTEX, we got statistically (significance level: 0.05) the same results from KME standard (ES 07600.1) and ISO standard (KS I ISO 15009). However, it showed statistically (significance level: 0.05) different results when TPH was analyzed by KME standard (ES 07552.1) and ISO standard (KS I ISO 16703). To clarify the reason why both methods produced different results for TPH content, we also did some additional experiments in terms of differences in extraction, clean-up and target hydrocarbon range. Extraction with polar and non-polar compounds mixed solvent (acetone+n-heptane) of KS I ISO 16703 showed higher extraction efficiency than with only non polar solvent (dichloromethane) extraction of ES 07552.1 by about 9%. While column type clean-up of KS I ISO 16703 showed the reduction in TPH content between before and after clean-up, batch type of clean-up of ES 07552.1 did not show any changes in TPH content through clean-up process. The target hydrocarbon range of ES 07552.1 and KS I ISO 16703 is $C_8{\sim}C_{40}$ and $C_{10}{\sim}C_{40}$, respectively. From this point of view, kerosene and JP-8 contaminated soil showed higher RPD (relative producibility deviation) values between results by both method than that of lubricant or diesel contaminated soil. The higher content of hydrocarbon ($C_8{\sim}C_{10}$) in kerosene and JP-8 played an important role in increasing RPD values in addition to the effects caused by different solvents and clean-up method. Consequently, it was concluded that both methods (ES 07552.1 and KS I ISO 16703) were not compatible.

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References

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