华南理工大学学报(自然科学版)
華南理工大學學報(自然科學版)
화남리공대학학보(자연과학판)
JOURNAL OF SOUTH CHINA UNIVERSITY OF TECHNOLOGY(NATURAL SCIENCE EDITION)
2015年
2期
8-12
,共5页
于淑娟%刘定波%徐献兵%吴鑫兰
于淑娟%劉定波%徐獻兵%吳鑫蘭
우숙연%류정파%서헌병%오흠란
离子色谱-质谱联用法%4-甲基咪唑%焦糖色素%美拉德反应%灵敏度%检出限
離子色譜-質譜聯用法%4-甲基咪唑%焦糖色素%美拉德反應%靈敏度%檢齣限
리자색보-질보련용법%4-갑기미서%초당색소%미랍덕반응%령민도%검출한
ion chromatography-mass spectrometry%4-methylimidazole%caramel pigment%Maillard reaction%sen-sitivity%detection limit
为了简单、方便地精确定量和定性样品中的4-甲基咪唑,建立了一种采用阳离子交换色谱-质谱联用( IC-MS)技术准确检测4-甲基咪唑含量的新方法,该方法的检出限为0.25μg/L,线性范围为2.5~200μg/L,线性相关系数为0.9997,相对标准偏差为2.32%~4.25%,加标回收率为92.7%~96.3%.使用该方法对焦糖色素、可乐等样品进行检测,结果表明,该方法具有分离度高、灵敏度高、定量准确、精密度高、检出限低的特点.
為瞭簡單、方便地精確定量和定性樣品中的4-甲基咪唑,建立瞭一種採用暘離子交換色譜-質譜聯用( IC-MS)技術準確檢測4-甲基咪唑含量的新方法,該方法的檢齣限為0.25μg/L,線性範圍為2.5~200μg/L,線性相關繫數為0.9997,相對標準偏差為2.32%~4.25%,加標迴收率為92.7%~96.3%.使用該方法對焦糖色素、可樂等樣品進行檢測,結果錶明,該方法具有分離度高、靈敏度高、定量準確、精密度高、檢齣限低的特點.
위료간단、방편지정학정량화정성양품중적4-갑기미서,건립료일충채용양리자교환색보-질보련용( IC-MS)기술준학검측4-갑기미서함량적신방법,해방법적검출한위0.25μg/L,선성범위위2.5~200μg/L,선성상관계수위0.9997,상대표준편차위2.32%~4.25%,가표회수솔위92.7%~96.3%.사용해방법대초당색소、가악등양품진행검측,결과표명,해방법구유분리도고、령민도고、정량준학、정밀도고、검출한저적특점.
In order to quantitatively and qualitatively determine the content of 4-methylimidazole in samples with simplicity , convenience and accuracy , a new method using cation exchange chromatography-mass spectrometry was developed .This method, with a detection limit of 0.25μg/L, a linear range varying from 2.5 to 200μg/L, a linear correlation coefficient of 0.999 7, a relative standard deviation of 2.32%~4.25% and a recovery varying from 92.7%to 96.3%, was then used to test the 4-methylimidazole in caramel pigment , cola and some other samples . The results show that the proposed method is of high separation degree , good sensitivity , accurate quantification , high precision and low detection limit .