A new polyoleic acid-polystyrene (PoleS) block/graft copolymer was synthesized and applied as adsorbent for ultrasound assisted dispersive solid phase microextraction (UA-DSPME) of Sb(III) in different bottled beverages and analysis using hydride generation atomic absorption spectrometry (HGAAS). Adsorption capacity of the PoleS was 150 mg g⁻¹. Several sample preparation parameters such as sorbent amount, solvent type, pH, sample volume and shaking time were optimized (based on central composite design (CCD) approach) and evaluated in respect to the recovery of Sb(III). The method revealed a high tolerance limit of matrix ions presence. Under optimized conditions, linearity range, the limit of detection, the limit of quantitation, extraction recovery, enhancement factor, preconcentration factor were 5–800 ng L⁻¹, 1.5 ng L⁻¹, 5.0 ng L⁻¹, 96%, 82, 90, respectively. Accuracy of the UA-DSPME method was confirmed based on different certified reference materials and standard addition method. Factorial design was utilized to estimate the influences of variables of recovery of Sb(III).

合成了一种新型聚油酸-聚苯乙烯 (PoleS) 嵌段/接枝共聚物，并将其用作吸附剂，用于不同瓶装饮料中 Sb(III) 的超声辅助分散固相微萃取 (UA-DSPME) 以及氢化物发生原子吸收光谱法 (HGAAS) 分析). PoleS 的吸附容量为 150 mg g ^-1。优化了吸附剂用量、溶剂类型、pH 值、样品体积和振荡时间等多个样品制备参数（基于中心复合设计 (CCD) 方法）并评估了 Sb(III) 的回收率。该方法揭示了基质离子存在的高耐受限度。优化条件下线性范围、检出限、定量限、提取回收率、增强因子、富集因子为5~800 ng·L^-1、1.5 ng L ^-1、5.0 ng L ^-1、96%、82、90。UA-DSPME 方法的准确性基于不同的有证标准物质和标准添加方法进行了确认。析因设计用于估计 Sb(III) 回收率变量的影响。