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학술발표회초록보기

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  • 03월 02일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제109회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Forensic comparison of soil samples from three different regions

등록일
2012년 2월 16일 15시 04분 17초
접수번호
0986
발표코드
ANAL.P-586 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
4월 25일 (수요일) 18:00~21:00
발표형식
포스터
발표분야
분석화학
저자 및
공동저자
민지숙, 허상철, 김기욱, 장유림1
국립과학수사연구소 화학분석과, Korea
1이화여자대학교 화학나노과학과, Korea
Small-scale(<1m2) spatial variability in soil properties was investigated at three locations around the NFS area in Seoul Korea. At each site, ten samples were collected sequentially in a square grid pattern(5 sites). The samples were compared in terms of four properties: major and minor element composition of the 53-500㎛ size fraction determined by X-ray fluorescence and LA-ICP-MS, stable carbon isotope ratios and carbon amount of the bulk <53㎛ fractions determined by isotope ratio mass spectrometry(IRMS), and colour of the 53-500㎛ fractions determined by spectrophotometry. Results showed that analytical and within-site variations were much smaller than between-location variations, and that the three sampling localities could be readily distinguished using any of the four soil properties. Significant within-site variation in the elemental composition was found at all eight localities. Colour properties and carbon isotope ratios and carbon amount showed relatively low variability at three sites. Considering the data as a whole, the three localities could be readily differentiated on the basis of a two sample from each site, using a minimum of ten comparison criteria. However, in order to adequately assess the potential variability at this scale it is recommended that a minimum of three, and preferably five or more, samples should be taken to assess variation within a localized area of forensic interest. Additional samples should also be taken from the wider surrounding area for purpose of comparison.

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