원문정보
초록
영어
The internal standard method using ion chromatography combined with tandem mass spectrometry (IC-MS/MS) for quantifying perchlorate in different types of food was established. Because the presence of ions and other biomolecules in matrices usually interrupts accurate determination of perchlorate, it is necessary to develop efficient, reproducible method to determine perchlorate concentrations in food. In this study, the internal standard method was compared with the external standard method to determine perchlorate concentrations in standard samples. The obtained method detection limit (MDL) for perchlorate was 0.005 μg/L for bottled water, 0.12 μg/L for milk, 0.27 μg/kg for rice, 0.16 μg/kg for vegetables, and 0.07 μg/kg for seaweed, respectively. The limit of quantitation (LOQ) was calculated by multiplying the MDL by 7. The recoveries of perchlorate from food samples spiked with perchlorate ranged from 98 to 105% and their percent relative standard deviation (%RSD) levels were <20%. This method was successfully applied for the quantitative determination of perchlorate in various kinds of food.
목차
서론
재료 및 방법
실험재료
표준용액 조제
생수 시료의 전처리
주류시료의 전처리
우유 및 분유 시료의 전처리
곡물, 채소 및 해조류 시료의 전처리
MDL과 LOQ 산출
회수율 측정
결과 및 고찰
내부표준물질 적용 유무에 따른 표준용액의 검량선 비교
식품 시료에 대한 MDL과 LOQ 산출 결과
회수율 측정 결과
요약
감사의 글
문헌