【摘要】：建立青稞酒中抗氧化劑、增塑劑、紫外線吸收劑、著色劑、表面活性劑和阻燃劑6個類別34個組分塑料添加劑的超高效液相色譜-串聯(lián)質(zhì)譜快速篩查檢測方法。青稞酒樣品中加水稀釋至酒精度20%左右,鹽析條件下用乙腈提取;色譜條件:Waters HSS T3 C_(18)柱(2.1 mm×150 mm,1.7μm),甲醇-0.1%乙酸銨為流動相梯度洗脫,流速為0.2 m L/min;串聯(lián)質(zhì)譜條件:以電噴霧離子源正離子模式電離,在多反應監(jiān)測模式下分析;外標法定量。結(jié)果表明:34種塑料添加劑在較寬的質(zhì)量濃度范圍內(nèi)線性關(guān)系良好,相關(guān)系數(shù)均大于0.99,兩個添加量水平的回收率在71.2%~106.7%之間,精密度(相對標準偏差)在4.2%~15.4%之間,青稞酒中34種塑料添加劑的最低檢出限為5~50μg/L。測定12批次青稞酒樣品,共檢出15種塑料添加劑。本方法適用于青稞酒中不同類別、物理和化學性質(zhì)差異較大的多種類多組分塑料添加劑的定性確證、高靈敏度定量、快速篩查青稞酒中跨類別、多組分塑料添加劑。
[Abstract]:A rapid method for the detection of antioxidants, plasticizers, ultraviolet absorbers, colorants, surfactants and flame retardants in highland barley wine by ultra-high performance liquid chromatography-tandem mass spectrometry (HPLC-MS) was established. The liquor sample of highland barley was diluted to about 20% with water and extracted with acetonitrile under salting out condition. The chromatographic conditions were: Waters HSS T3 C _ (18) column (2.1 mm 脳 150 mm, 1.7 渭 m), methanol-0.1% ammonium acetate as mobile phase gradient eluting, and the flow rate was 0.2 mL 路min. The condition of tandem mass spectrometry was ionized by positive ion mode of electrospray ion source and analyzed under multi-reaction monitoring mode, and the quantity was quantified by external standard method. The results showed that the linear relationship of 34 kinds of plastic additives was good in a wide range of mass concentration, the correlation coefficient was more than 0.99, and the recovery of the two additive levels was 71.2% 鈮，

本文編號：2492244