In this study, an overhead rotating flat surface sorbent based solid-phase microextraction was developed as a rapid and efficient method for simultaneous separation and determination of sulfonamides in animal based-food products. 3D graphene oxide/ lanthanum nanoparticles @ Ni foam was introduced as a novel selective sorbent. SEM-EDX and FT-IR techniques were applied for characterization of the sorbent. At optimum conditions, the linear ranges of 0.4-700.0 (µg L^-1), 0.3-900.0 (µg L^-1), and 0.25-500 (µg L^-1) and the enrichment factors of 606.8, 604.3, 608.9 were obtained for SDZ, SMX, and SMZ, respectively. The LOD (S/N = 3) of 0.14, 0.11, 0.08 (µg L^-1) were achieved for SDZ, SMX, and SMZ, respectively. The intra-day and inter-day precision (%) (five days, n=7) for the concentration of 100 µg L^-1 were less than 4.3 and 3.8, respectively. The recoveries over 90.0 % revealed high capability of the method for utilization in complex matrixes.

在本研究中，基于固相微萃取的高架旋转平面吸附剂被开发为一种快速有效的方法，用于同时分离和测定动物性食品中的磺胺类药物。引入了 3D 氧化石墨烯/镧纳米颗粒@泡沫镍作为一种新型选择性吸附剂。SEM-EDX 和 FT-IR 技术用于表征吸附剂。在最佳条件下，线性范围为0.4-700.0（μg L ^-1）、0.3-900.0（μg L ^-1）和0.25-500（μg L ^-1），富集因子分别为606.8、604.3、608.9分别用于 SDZ、SMX 和 SMZ。LOD (S/N = 3) 为 0.14、0.11、0.08 (µg L ^-1) 分别为 SDZ、SMX 和 SMZ 实现。100 µg L ^-1浓度的日内和日间精密度 (%)（五天，n=7）分别小于 4.3 和 3.8。超过 90.0% 的回收率表明该方法在复杂基质中的应用能力很强。