College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, PR China.
State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, PR China.
Food Chem. 2014 May 1;150:58-64. doi: 10.1016/j.foodchem.2013.10.144. Epub 2013 Nov 4.
This paper presented a simple and effective solid-phase extraction method using α-zirconium phosphate intercalated by hexadecyl trimethyl ammonium bromide (α-ZrP-CTMAB) as a novel adsorbent. Surfactant-assisted method was applied to prepare α-ZrP-CTMAB whose sorbent properties and extraction efficiency were investigated. Four sulfonamides (SAs) in honey were selected as analytical models and finally determined by liquid chromatography-tandem mass spectrometry. The recoveries of SAs at three spiked levels (10, 100, 1000ngg(-1)) were in the range of 58.7-99.3% and the relative standard deviations ranged from 2.69% to 7.48%. The detection limits obtained were 0.25-0.5ngg(-1). Compared with other methods in the literatures, the proposed method reduced the consumption of organic solvents and simplified the sample preparation procedure for the analysis of SAs in honey. Therefore, modified α-ZrP showed great potential in the analysis of pollutants in complex samples.
本文提出了一种使用十六烷基三甲基溴化铵插层α-磷酸锆（α-ZrP-CTMAB）作为新型吸附剂的简单有效的固相萃取方法。采用表面活性剂辅助法制备了α-ZrP-CTMAB，考察了其吸附性能和萃取效率。选择蜂蜜中的 4 种磺胺类抗生素（SAs）作为分析模型，最终采用液相色谱-串联质谱法进行测定。SAs 在 3 个加标水平（10、100、1000ng/g）的回收率在 58.7-99.3%之间，相对标准偏差在 2.69%-7.48%之间。检测限为 0.25-0.5ng/g。与文献中的其他方法相比，该方法减少了有机溶剂的消耗，简化了样品前处理步骤，用于蜂蜜中 SAs 的分析。因此，改性 α-ZrP 在分析复杂样品中的污染物方面具有很大的潜力。
