Journal of Environmental Analysis, Health and Toxicology (환경분석과 독성보건)

The Korea Society for Environmental Analysis (한국환경분석학회)
권호 표지

Improving Strontium Isotope Ratio Analysis Using MC-ICP-MS

다검출기 유도결합 플라즈마 질량분석기를 이용한 스트론튬 동위원소비 분석법 개선

  • Lee, Sin-Woo (Environmental Measurement and Analysis Center, National Institute of Environmental Research) ;
  • Park, Jaeseon (Environmental Measurement and Analysis Center, National Institute of Environmental Research) ;
  • Park, Hyun-Woo (Environmental Measurement and Analysis Center, National Institute of Environmental Research) ;
  • Hwang, Jong Yeon (Environmental Measurement and Analysis Center, National Institute of Environmental Research) ;
  • Kim, Kumhee (Environmental Measurement and Analysis Center, National Institute of Environmental Research) ;
  • Chung, Hyun-Mi (Environmental Measurement and Analysis Center, National Institute of Environmental Research) ;
  • Choi, Jong-Woo (Environmental Measurement and Analysis Center, National Institute of Environmental Research)
  • 이신우 (국립환경과학원 환경측정분석센터) ;
  • 박재선 (국립환경과학원 환경측정분석센터) ;
  • 박현우 (국립환경과학원 환경측정분석센터) ;
  • 황종연 (국립환경과학원 환경측정분석센터) ;
  • 김금희 (국립환경과학원 환경측정분석센터) ;
  • 정현미 (국립환경과학원 환경측정분석센터) ;
  • 최종우 (국립환경과학원 환경측정분석센터)
  • Received : 2018.10.12
  • Accepted : 2018.11.26
  • Published : 2018.12.31
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Abstract

Strontium (Sr) commonly exists in rock, groundwater, soil, plants, and animals. The Sr isotope ratio offers important information as a tracer on nature because the Sr isotopic composition is not fractionated by any biological process in these ecosystems. Hence, Sr isotope ratio has been used in several studies on tracing the Sr source for contaminated sites and human migration. In this study, we developed a separation method for Sr content, and then improved Sr isotope analysis using multi-collector inductively coupled plasma mass spectrometry (MC-ICP-MS). A powdered rock standard (NIST 2710a) was used to determine the removal of interference elements (Rb and Ca) and the recovery rate of Sr content. The results ranged from 98% to 106%. Additionally, three standard samples (NBS 987, IAPSO and NIST 1486) were analyzed to evaluate the precision and accuracy of the results. The measured $^{87}Sr/^{86}Sr$ ratio for all the samples were consistent with the reported values, within an error. These results indicate that our established Sr separation and Sr isotope measurement methods are reliable and can hence be useful in the fields of environmental and forensic sciences.

Keywords

Acknowledgement

Grant : 환경 다매체 오염원 추적자 탐색 및 현장 적용기법 마련 연구(III)

Supported by : 국립환경과학원(NIER)

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