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作 者:丁涛[1] 吕辰[2] 柳菡[1] 郭玲[1] 吴斌[1] 陈国松[2] 沈崇钰[1] 张睿[1] 费晓庆[1] 张晓燕[1] 庾金良[2]
机构地区:[1]江苏出入境检验检疫局食品实验室,江苏南京210001 [2]南京工业大学理学院,江苏南京211816
出 处:《分析测试学报》2014年第1期27-32,共6页Journal of Instrumental Analysis
基 金:江苏省局项目(2012KJ31)
摘 要:利用分散固相萃取结合高效液相色谱-四极杆/静电场轨道阱高分辨质谱对进出口葡萄酒中组胺、酪胺、尸胺、腐胺、色胺、精胺、亚精胺和苯乙胺8种生物胺进行分析.葡萄酒样品用去离子水稀释,加入200 mg十八烷基硅烷粉(Octadecylsilyl,ODS)和50 mg N-丙基乙二胺粉(Primary secondary amine,PSA)吸附剂分散固相萃取净化后,以高效液相色谱-四极杆/静电场轨道阱高分辨质谱进行定性和定量分析.选择Phe-nomenex C18(100 mm ×4.6 mm ×2.6 μm)分析柱,乙腈-0.1‰七氟正丁酸水溶液作为流动相进行梯度洗脱分离.质谱采用正离子模式,通过高分辨质谱全扫描模式提取目标化合物精确质量数,利用阈值自动触发全扫描二级质谱功能提高了定性的准确性.8种生物胺在0.2~10.0 mg/L浓度范围内线性关系良好,相关系数均大于0.99.方法的定量下限可达1.0 mg/L.在1.0、5.0、10.0 mg/L 3个浓度加标水平下,葡萄酒中8种生物胺的平均回收率为83.7%~101.6%,相对标准偏差(RSDs)为3.1%~12.9%.此方法准确灵敏且前处理简单,可作为葡萄酒中生物胺筛选和确认的检测方法.A method for the determination of histamine,tyramine,cadaverine,putrescine,tryptamine,spermine,spermidine and phenylethylamine in wines by liquid chromatography-quadrupole/electrostatic field orbit trap mass spectrometry was developed.The samples were diluted with deionized water,followed by dispersive solid phase extraction (DSPE) clean-up procedure with 200 mg octadecylsilyl (ODS) and 50 mg primary secondary amine(PSA).Chromatographic separation was performed on a Phenomenex C18 (100 mm × 4.6 mm × 2.6 μm) column with acetonitrile-0.1%o heptafluorobutyric acid(HFBA) solution as mobile phase by gradient elution.Eight biogenic amines were analyzed in positive mode with ESI interface by quadrurpole/electrostatic field orbit trap high-resolution mass spectrometry.Accurate mass extraction for the target analytes and two-stage threshold-triggered mass improved the accuracy during the analysis.The linearities of 8 biogenic amines ranged from 0.2 mg/L to 10.0 mg/L with correlation coefficients more than 0.99.The limits of quantitation for 8 biogenic amines were all 1.0 mg/L.The average recoveries at three spiked levels(1.0,5.0 and 10.0 mg/L) were between 83.7% and 101.6% with relative standard deviations(RSDs) not more than 12.9%.The developed method was simple and sensitive,and could be applied as a screen and confirmatory method for the analysis of biogenic amines in red wines.
关 键 词:生物胺 分散固相萃取 葡萄酒 静电场轨道阱高分辨质谱
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