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Development of a new method for analyzing free aluminum ions (Al3+) in seafood using HPLC-ICP-MS

文献类型： 外文期刊

作者： Shang DeRong 1 ; Zhao YanFang 1 ; Zhai YuXiu 1 ; Ning JinSong 1 ; Ding HaiYan 1 ; Sheng XiaoFeng 1 ;

作者机构： 1.Chinese Acad Fishery Sci, Yellow Sea Fishery Res Inst, Qingdao 266071, Peoples R China

关键词： free aluminum ion;seafood;solid-phase extraction;HPLC-ICP-MS

期刊名称：CHINESE SCIENCE BULLETIN （ 影响因子：1.649； 五年影响因子：1.738 ）

ISSN： 1001-6538

年卷期： 2013 年 58 卷 35 期

页码：

收录情况： SCI

摘要： This paper presents a novel method for simultaneous online examination of free aluminum ions (Al3+) in seafood, using solid-phase extraction and high-performance liquid chromatography online with inductively coupled plasma mass spectrometry (SPE-HPLC-ICP-MS), without post-column reaction. The optimum conditions for chromatographic separation of Al3+ were achieved using an IonPac CS5A analytical column with an IonPac CG5A guard column. The mobile phase consisted of 0.040 mol/L LiOH, 0.0060 mol/L 2,6-pyridinedicarboxylic acid, and 0.090 mol/L CH3COOH (pH 4.7). The free Al3+ ions in seafood were extracted by shaking with the mobile phase at 70A degrees C for 2 h. SPE was conducted using an Oasis MCX, 3cc/60 mg, 30 mu m column, which was activated and equilibrated with 2 mL of methanol and 4 mL of deionized water before use. HCl (0.075 mol/L, 2 mL) was used to wash inorganic Al from the SPE column. The standard recoveries of Al3+ were all above 89% and the relative standard deviations were all below 5%. The proposed method was successfully used for the examination of Al3+ in seafood samples, and the results were similar to those obtained using the static equilibrium method.

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