Electron ionization-gas chromatography/mass spectrophotometry (EI-GC/MS) is generally used in searching for methcathinone (MCT) analogs. However, the spectrum of EI-GC/MS is difficult to interpret in new psychoactive substances (NPS) that are not registered in GC/MS libraries. There is also a risk of confusion because of the many candidate structures for fragment ions. By using our method, 13 kinds of MCT analogs can be classified into 26 different kinds of fragment ions based on typical and basic fragment ions. In addition, we compared the measured molecular weight (MW) and predicted the structure for the fragment ions of MCT analogs based on the candidates of the structures for their ions by EI-GC/MS and Orbitrap-EI-GC/MS. As a result of the analysis by EI-GC/MS, the MW was measured only up to the first digit. This made it difficult to specify the structure because there are many possible candidates. Whereas in the analysis by Orbitrap-EI-GC/MS, the MW was accurately measured up to the fifth digit. In addition, since the analysis only specified one type of candidate, it could be predicted accurately. Sulfur, iron, chlorine, and bromine, which are compounds with halogen or high isotope ratios, were also clearly distinguished in the analysis by Orbitrap-EI-GC/MS. In conclusion, when unknown NPS evidence is requested, it will be possible to predict the structure more quickly using chemical structural marker-based identification of MCT analogs by Orbitrap-EI-GC/MS. Therefore, this analysis will be useful to prevent the abuse of NPS.
목차
Abstract Ⅰ. 서론 Ⅱ. 실험방법 1. 분석물질 2. 표준용액 및 분석시료 조제 3. 모핵 분석 4. 분석법 및 분석조건 Ⅲ. 결과 및 고찰 1. 분석 결과 2. 실제 감정에의 적용 가능성 Ⅳ. 결론 Ⅴ. 사사 Ⅵ. 참고문헌
법과학 분야는 사회정의 구현에 있어 크나큰 가치가 있음에도 불구하고 우리나라에서는 이 분야에 대한 인식이 미흡하여 선진 외국에 비해 침체되어 있는 실정이다. 이에 우리나라에서도 법과학 분야와 관련 있는 학계, 연구기관, 수사기관 등 유관 단체들로 구성된 한국 법과학회를 창립하여 이 분야를 활성화 시켜 과학수사를 한층 더 발전시키기 위함을 목적으로 한다.