Soybean oil gums and soapstocks are important by‐products that may potentially be contaminated by persistent organic pollutants (POP) such as polycyclic aromatic hydrocarbons (PAH) and phthalic acid esters (PAE), thus lowering the value when using them as starting materials to produce animal feed additives, food industry ingredients, and pharmaceutical products. In the present work, PAH and PAE distributions in these two types of by‐products were detected using solvent extraction–solid phase extraction purification coupled with gas chromatography–mass spectrometry. Total PAH and PAE amounts in the soapstocks were significantly higher than those in the gums, thus indicating that neutralization showed much higher removal efficiency than degumming in terms of PAH and PAE eliminations. Meanwhile, the results proved that the concentrations of these two kinds of contaminants in the soybean oil gums and soapstocks were much higher than those in the soybean oils, suggesting that further investigations were needed and that the contents of PAH and PAE in soybean oil refining by‐products should be carefully monitored and regulated.

中文翻译：

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豆油精炼厂生产的口香糖和肥皂中多环芳烃和邻苯二甲酸酯的分布

大豆胶和皂料是重要的副产品，可能会被持久性有机污染物（POP）污染，例如多环芳烃（PAH）和邻苯二甲酸酯（PAE），因此降低了它们作为原料生产时的价值动物饲料添加剂，食品工业原料和药品。在目前的工作中，使用溶剂萃取-固相萃取纯化结合气相色谱-质谱法检测了这两种副产物中的PAH和PAE分布。皂料中PAH和PAE的总量明显高于口香糖，因此表明在消除PAH和PAE方面，中和显示的脱胶效率比脱胶高得多。同时，