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  • 09월 03일 23시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제122회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Study of Solid Natural Organic Matter and Unprocessed Soil Fixed on a Metal Plate by Double Adhesive Tape with Laser Desorption Ionization Ultrahigh Resolution Mass Spectrometry

2018년 8월 20일 18시 04분 22초
ANAL.P-340 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
10월 19일 (금요일) 11:00~12:30
Analytical Chemistry
저자 및
Nissa Nurfajrin Solihat, Sunghwan Kim*
Department of Chemistry, Kyungpook National University, Korea
Typically, extensive sample preparation procedures are required to perform analysis of natural organic matter (NOM) and soil organic matter. In this study, the solid NOM and unprocessed soil samples were fixed on a metal plate with double adhesive tape and the samples were directly analyzed by use of laser desorption ionization (LDI) coupled to ultrahigh resolution mass spectrometry (UHR-MS). LDI UHR-MS analysis was successfully performed with about 2–5 μg of solid fluvic and humic acid and 500 μg soil samples loaded on the metal plate. Most of the peaks reported in the previous study performed with LDI UHR-MS was observed and additional 2200 peaks were found by direct analysis of fluvic acids. Two unprocessed soil samples were directly analyzed with LDI UHR-MS. Poly-condensed aromatics, oxygenated poly-condensed aromatics, Lignin type molecules, and lipid molecules were mainly observed from two soil samples were most abundantly observed from soils. The data presented in this study clearly show that direct molecular level analysis can be performed on solid NOM and unprocessed soil samples with high sensitivity. Therefore, we expect that the suggested analytical method can be very useful for studies such as obtaining profiles of organic compounds in cored soil samples.