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 Zn₅ metal cluster, a Zn₅ functionalized copolymer monolithic column was rationally designed for pipette tip micro-solid phase extraction (μ-SPE). The modified Zn₅ 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⁻¹ (R² > 0.997), detection limits of 0.050–1.5 μg L⁻¹, satisfactory recoveries (86.3–101.5 %), and high precisions (RSDs < 7.9 %). The results indicated that the Zn₅ 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 (PAH) 的污染对健康构成威胁。因此，PAHs 的痕量分析是非常必要的。基于多环芳烃在 Zn ₅金属簇上的高效吸附，合理设计了 Zn ₅功能化共聚物整体柱用于移液管尖端微固相萃取（μ-SPE）。改性 Zn ₅提高了整料对萘、菲、荧蒽和芘的吸附选择性和容量。化学掺杂和共聚使整料稳定且寿命长。在最佳提取条件下，建立了μ-SPE-高效液相色谱-紫外检测器法检测食用油中4种多环芳烃。该方法的检测范围为 0.15–250 μg L ⁻¹ ( R ²  > 0.997)，检测限为 0.050–1.5 μg L ⁻¹，回收率令人满意 (86.3–101.5 %)，精密度高 (RSD < 7.9 %)。结果表明，Zn ₅功能化共聚物整体柱是检测食用油中多环芳烃残留的理想分离介质。