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建立了快速检测聚碳酸酯塑料包装材料中2-叔丁基苯酚、4-叔丁基苯酚及2,4-二叔丁基苯酚等酚类化合物的气相色谱质谱联用法。样品经正己烷超声萃取离心、浓缩后进行GC/MS测定,外标法定量。结果表明,2-叔丁基苯酚、4-叔丁基苯酚及2,4-二叔丁基苯酚均分别在0.1~100 mg/L范围内线性关系良好;定量限(以信噪比≥10计)为1 mg/kg;在4个加标水平下3种酚类化合物的加标回收率为82.23%~92.31%,相对标准偏差为2.13%~4.76%(n=6)。该方法具有优异的灵敏度和稳定性,满足对聚碳酸酯塑料包装材料中2-叔丁基苯酚、4-叔丁基苯酚及2,4-二叔丁基苯酚等酚类化合物的分析检测和准确定量。
The rapid determination of 2-tert-butylphenol, 4-tert-butylphenol and 2,4-di-tert-butylphenol in polycarbonate plastic packaging materials by gas chromatography-mass spectrometry was established. Samples were extracted by n-hexane, centrifuged, concentrated and analyzed by GC / MS and quantified by external standard method. The results showed that 2-tert-butylphenol, 4-tert-butylphenol and 2,4-di-tert-butylphenol all had good linearity in the range of 0.1-100 mg / The recoveries of three phenolic compounds were 82.23% -92.31% with relative standard deviations of 2.13% -4.76% (n = 6) at the four spiked levels. The method has excellent sensitivity and stability, to meet the polycarbonate plastic packaging materials 2-tert-butyl phenol, 4-tert-butyl phenol and 2,4-di-tert-butyl phenol and other phenolic compounds detection and detection Accurate quantitative.