Study of solvent sublation for concentration of trace phthalate esters in plastic beverage packaging and analysis by gas chromatography-mass spectrometry.
Study of solvent sublation for concentration of trace phthalate esters in plastic beverage packaging and analysis by gas chromatography-mass spectrometry.
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DOI：
10.1016/j.foodchem.2015.01.013
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发表时间：
2015-06
期刊：
影响因子：
8.8
通讯作者：
Lin Chang;P. Bi;Xiaochen Li;Yun Wei
中科院分区：
文献类型：
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作者：
Lin Chang;P. Bi;Xiaochen Li;Yun Wei
建立了一种基于溶剂浮选（SS）和气相色谱-质谱（GC-MS）的塑料饮料包装中22种邻苯二甲酸酯（PAEs）的痕量分析方法。在溶剂浮选部分，详细考察了溶液pH、NaCl浓度、氮气流量和浮选时间对浮选效率的影响，得到了最佳工艺条件。采用溶剂浮选法对从塑料饮料包装中迁移到食品模拟物中的痕量邻苯二甲酸酯进行分离浓缩，并对浓缩液中的痕量目标化合物进行GC-MS分析。根据欧盟法规，制备了用于正常饮料的蒸馏水和用于酸奶醋酸饮料的醋酸溶液（3%）的食品模拟物进行迁移试验。该痕量分析方法线性良好，检出限（LODs）为1.6-183.5 ng/L，回收率（67.3-113.7%）令人满意。
A novel trace analytical method based on solvent sublation (SS) and gas chromatography–mass spectrometry (GC–MS) was developed for the trace determination of twenty-two phthalate esters (PAEs) from plastic beverage packaging. In the solvent sublation section, the effects of solution pH, NaCl concentration, nitrogen flow rate, and sublation time on the sublation efficiency were investigated in detail, and the optimal conditions were obtained. The trace PAEs migrated from plastic beverage packaging to food simulants were separated and concentrated by solvent sublation, and then the trace target compounds in the concentrated solution were analyzed by GC–MS. According to the European Union Regulation, the food simulants including distilled water for the normal beverages and acetic acid solution (3%) for the acetic beverage of yogurt were prepared for migration tests. The trace analysis method showed good linearity, low limits of detection (LODs) of 1.6–183.5 ng/L, and satisfied recoveries (67.3–113.7%).