Propofol is widely used for anesthesia and sedation due to its rapid onset and short half-life but has potential for abuse, leading to its regulation as a controlled substance in South Korea since 2011. Effective monitoring methods for propofol in urine are crucial due to its quick metabolism and excretion. This study presents an improved GC/MS method for detecting propofol by adjusting urine pH to acidic conditions, reducing nicotine interference. The method achieves reliable detection without derivatization or hydrolysis, with an LOD of 0.01 μg/mL and LOQ of 0.05 μg/mL. Testing on 10 urine samples showed no matrix interference, excellent linearity (correlation coefficient > 0.999), and satisfactory recovery rates (mean 107%). Precision and accuracy met validation criteria with within-run and between-run values within 15% and ±15%, respectively. Dilution tests confirmed minimal impact, maintaining 97-115% recovery. The effectiveness of excluding nicotine interference by adjusting pH was verified. Nicotine's interference was tested with QC samples at different pH levels, showing minimal interference at pH 4 compared to pH 9.5 (p<0.05). Acidic conditions improved propofol extraction and detection of hydroxylated metabolites. The study included 15 subjects (9 female, 6 male, aged 27-44), with an average propofol concentration in urine of 29.7 μg/mL (range 9.1-86.0). This approach is valuable for clinical and forensic toxicology applications, enhancing early detection of abuse and informing public health strategies.
목차
Abstract Ⅰ. 서론 Ⅱ. 재료 및 방법 1. 시약 및 재료 2. 실험 방법 및 분석 3. 분석기기 및 조건 4. 시험방법의 유효화 Ⅲ. 결과 및 고찰 1. pH 에 의한 추출율 확인 2. 실제 소변에서의 적용 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.