1.长沙市食品药品检验所,湖南 长沙 410036
2.国家酒类产品质量检验检测中心(湖南),湖南 长沙 410036
3.张家界市高级技工学校,湖南 张家界 427000
汪辉,硕士,高级工程师,研究方向:食品和化妆品成分分析,E-mail:wanghuei158@163.com
纸质出版日期:2024-02-15,
收稿日期:2023-08-16,
修回日期:2023-10-22,
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邓楠,尹芳平,刘川等.QuEChERS/超高效液相色谱-串联质谱法同时测定大米中16种香豆素和香兰素及其衍生物[J].分析测试学报,2024,43(02):254-260.
DENG Nan,YIN Fang-ping,LIU Chuan,et al.Simultaneous Determination of 16 Coumarins and Vanillins and Their Derivatives in Rice by QuEChERS/Ultra-high Performance Liquid Chromatography-Tandem Mass Spectrometry[J].Journal of Instrumental Analysis,2024,43(02):254-260.
邓楠,尹芳平,刘川等.QuEChERS/超高效液相色谱-串联质谱法同时测定大米中16种香豆素和香兰素及其衍生物[J].分析测试学报,2024,43(02):254-260. DOI: 10.12452/j.fxcsxb.23081602.
DENG Nan,YIN Fang-ping,LIU Chuan,et al.Simultaneous Determination of 16 Coumarins and Vanillins and Their Derivatives in Rice by QuEChERS/Ultra-high Performance Liquid Chromatography-Tandem Mass Spectrometry[J].Journal of Instrumental Analysis,2024,43(02):254-260. DOI: 10.12452/j.fxcsxb.23081602.
建立了大米中16种香豆素和香兰素及其衍生物的超高效液相色谱-串联质谱(UPLC-MS/MS)检测方法。大米样品采用1%甲酸乙腈提取,150 mg C
18
与450 mg无水MgSO
4
吸附剂净化,采用Agilent SB-C
18
色谱柱(2.1 mm×50 mm,1.8 µm)分离,0.2%甲酸水溶液(含5 mmol/L甲酸铵)和乙腈为流动相梯度洗脱,在电喷雾离子源正负离子模式下采用多反应监测模式(MRM)进行测定,以基质匹配标准溶液内标法定量。结果显示,16种待测组分在各自质量浓度范围内线性关系良好(
r
≥0.998),方法检出限为0.001~0.400 mg/kg,定量下限为0.004~0.600 mg/kg,平均回收率为71.3%~120%,相对标准偏差(RSD,
n
=6)为1.6%~6.5%,日内RSD(
n
=6)为1.0%~8.8%,日间RSD(
n
=3)为0.60%~14%。该法前处理简单易操作、灵敏度高、准确性好,适用于大米中香豆素与香兰素及其衍生物的同时检测。
A ultra-high performance liquid chromatography-tandem mass spectrometry(UPLC-MS/MS) method was established for the determination of 16 coumarins and vanillins and their derivatives in rice. The rice sample was extracted by acetonitrile with 1% formic acid,purified with a combined dadsorbent with 150 mg C
18
and 450 mg anhydrous MgSO
4
. The chromatography separation for the analytes was achieved on an Agilent SB-C
18
column(2.1 mm×50 mm,1.8 µm),and gradient elution was performed using 0.2% formic acid solution(containing 5 mmol/L ammonium formate) and acetonitrile. The analytes were determined by multiple reaction monitoring(MRM) of electrospray ionization in positive and negative ion modes,and quantified by matrix-matched internal standard method. The 16 components measured had good linear relationships within their respective mass concentration ranges(
r
≥0.998). The limits of detection were 0.001-0.400 mg/kg,and the limits of quantitation were 0.004-0.600 mg/kg. Average recoveries of the 16 components ranged from 71.3% to 120%,the relative standard deviations(RSDs,
n
=6) ranged from 1.6% to 6.5%,the intra-day RSDs(
n
=6) ranged from 1.0% to 8.8%,and the inter-day RSDs(
n
=3) ranged from 0.60% to 14%. The method is simple and easy to operate,with high sensitivity and accuracy,and is suitable for the simultaneous determination of coumarins and vanillins and their derivatives in rice.
QuEChERS超高效液相色谱-串联质谱大米香豆素香兰素衍生物同位素内标
QuEChERSUPLC-MS/MSricecoumarinsvanillinsderivativeisotope internal standard
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