Wu Xinze, Chu Qiqi, Ma Qiong, Chen Huaixia, Dang Xueping, Liu Xiaolan
Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules & College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, China.
Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules & College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, China.
Food Chem. 2023 Jul 1;413:135605. doi: 10.1016/j.foodchem.2023.135605. Epub 2023 Feb 1.
The contamination of polycyclic aromatic hydrocarbons (PAHs) in edible oil is a health threat. Thus, trace analysis of PAHs is of high necessity. Based on the efficient adsorption of PAHs on Zn metal cluster, a Zn functionalized copolymer monolithic column was rationally designed for pipette tip micro-solid phase extraction (μ-SPE). The modified Zn improved the adsorption selectivity and capacity of the monolith for naphthalene, phenanthrene, fluoranthene and pyrene. Chemical doping and copolymerization stabilized the monolith with a long life. Under optimal extraction conditions, a μ-SPE-high performance liquid chromatography with ultraviolet detector method was established for the detection of 4 PAHs in edible oils. The method yielded detection ranges of 0.15-250 μg L (R > 0.997), detection limits of 0.050-1.5 μg L, satisfactory recoveries (86.3-101.5 %), and high precisions (RSDs < 7.9 %). The results indicated that the Zn functionalized copolymer monolithic column was an ideal separation medium for the detection of PAHs residues in edible oils.
食用油中多环芳烃（PAHs）的污染对健康构成威胁。因此，对PAHs进行痕量分析非常必要。基于PAHs在锌金属簇上的高效吸附，合理设计了一种锌功能化共聚物整体柱用于移液器吸头微固相萃取（μ-SPE）。改性后的锌提高了整体柱对萘、菲、荧蒽和芘的吸附选择性和吸附容量。化学掺杂和共聚使整体柱具有长寿命且性能稳定。在最佳萃取条件下，建立了一种μ-SPE-高效液相色谱-紫外检测法用于检测食用油中的4种PAHs。该方法的检测范围为0.15 - 250 μg/L（R > 0.997），检测限为0.050 - 1.5 μg/L，回收率令人满意（86.3 - 101.5%），精密度高（RSDs < 7.9%）。结果表明，锌功能化共聚物整体柱是检测食用油中PAHs残留的理想分离介质。
