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建立了测定染整助剂中UV-350,UV-320,UV-328和UV-327 4种苯并三唑类化合物的高效液相色谱-串联质谱(HPLC-MS/MS)分析方法。样品经甲醇超声波提取、稀释后,采用Eclipse Plus C18柱(2.1 mm×50 mm,3.5μm),甲醇和0.01 mol/L甲酸铵水溶液为流动相梯度洗脱,电喷雾离子源电离,正离子多反应监测模式进行定性和定量分析。实验结果表明,4种苯并三唑类化合物的线性相关系数(r2)均大于0.99;以不低于10倍的信噪比计算方法定量限(LOQ,S/N=10)为0.3~1.2 mg/kg。3种染整助剂基质中苯并三唑类化合物在4个不同加标水平的平均回收率为80.0%~99.6%,相对标准偏差(RSD)为2.3%~10.0%。该方法灵敏度高、操作简便、快速准确,适用于染整助剂中苯并三唑类化合物的分析测定。
A high performance liquid chromatography-tandem mass spectrometry (HPLC-MS / MS) method was established for the determination of 4 benzotriazoles in UV-350, UV-320, UV-328 and UV-327 dyes. The samples were extracted by methanol and diluted with Eclipse Plus C18 column (2.1 mm × 50 mm, 3.5 μm). The mobile phase consisted of methanol and 0.01 mol / L ammonium formate. The electrospray ionization ionization Response monitoring model for qualitative and quantitative analysis. The experimental results showed that the linear correlation coefficients (r2) of the four benzotriazoles were all above 0.99. The limit of quantification (LOQ, S / N = 10) was 0.3 to 1.2 mg / kg. The average recoveries of benzotriazoles in the three dyeing and finishing auxiliaries were 80.0% ~ 99.6% at four different spiked levels, and the relative standard deviations (RSDs) ranged from 2.3% to 10.0%. The method has high sensitivity, easy operation, fast and accurate, and is suitable for the analysis and determination of benzotriazoles in dyeing and finishing auxiliaries.