CAJ | 학술논문

采用分子荧光法测定面粉中痕量核黄素的含量.核黄素浓度在1×10-6～5×10-4g/L范围内与荧光强度呈良好的线性关系,方法的检出限为4×10-8g/L;对浓度为1×10-5g/L的核黄素标准溶液进行11次平行测定,得相对标准偏差为3.4%.方法简便快速、灵敏度高、选择性好,已用于面粉中核黄素含量的测定,回收率为98%～105%,结果令人满意.
채용분자형광법측정면분중흔량핵황소적함량.핵황소농도재1×10-6～5×10-4g/L범위내여형광강도정량호적선성관계,방법적검출한위4×10-8g/L;대농도위1×10-5g/L적핵황소표준용액진행11차평행측정,득상대표준편차위3.4%.방법간편쾌속、령민도고、선택성호,이용우면분중핵황소함량적측정,회수솔위98%～105%,결과령인만의.
A fluorimetric method was proposed for the determination of trace lactoflavin in flour. The ]actoflavin concentration within a range of ×10-6～5×10-4g/L has a good linear relation, and the detection limit is ×10-8g/L, and the relative standard deviation (RSD) is 3.4% for ×10-5g/L lactoflavin solution (n=11). The method has high sensitivity and selectivity, and has been applied for the detection of lactoflavin in flour, and the recoveries between 98%-105% are obtained with satisfied results.