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Determination of Anions and Cations in Biodiesel with On-line Sample Pretreatment Column-switching Ion Chromatography

文献类型： 外文期刊

作者： Huang, Zhongping 1 ; Zhao, Xunyan 2 ; Zhu, Zuoyi 3 ; Pan, Zaifa 1 ; Wang, Lili 1 ; Zhu, Yan 2 ;

作者机构： 1.Zhejiang Univ Technol, Coll Chem Engn, Hangzhou 310014, Zhejiang, Peoples R China

2.Zhejiang Univ, Dept Chem, Hangzhou, Zhejiang, Yemen

3.Zhejiang Acad Agr Sci, Inst Qual & Stand Agr Prod, Hangzhou, Zhejiang, Peoples R China

关键词： anion;biodiesel;cation;column-switching;ion chromatography;sample pretreatment

期刊名称：JOURNAL OF LIQUID CHROMATOGRAPHY & RELATED TECHNOLOGIES （ 影响因子：1.312； 五年影响因子：1.145 ）

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收录情况： SCI

摘要： An ion chromatographic approach with on-line sample pretreatment column-switching technique was proposed for the determination of anions and cations in biodiesel. By the employment of the column-switching technique combined with a polymer-based reversed-phase column (An IonPac NG1 guard column), organic residues in the aqueous extracts of biodiesel samples could be on-line removed automatically before flowing into analytical columns. An IonPac AG 11-HC guard column and IonPac AS 11-HC separation column were utilized for the anion separation, whereas an IonPac CG 12A guard column and IonPac CS12A was utilized for cations. Under the optimized separation conditions, a series of standard solutions consisting of nine anions of various concentrations from 0.05 to 40mg/kg were analyzed with correlation coefficients r0.9990, as well as six cations of various concentrations from 0.05 to 20mg/kg. The limits of detection were in the range of 3.2 to 23.3 mu g/kg for anions and 5.1 to 31.3 mu g/kg for cations. Relative standard deviations of both anions and cations for retention time, peak area, and peak height were less than 2.98%. A spiking study was performed with satisfactory recoveries between 88.6 and 104.0% for all ions. The chromatographic system was successfully applied to the analysis of five biodiesel samples.

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[1]Determination of Inosine Monophosphate in Meat Products by Ion Chromatography with Suppressed Conductivity Detection. Zhu Zuo-Yi,Zhang Yu,Wang Jun-Hong,Li Xue,Wang Wei,Zhu Zuo-Yi,Zhang Yu,Wang Wei,Zhu Zuo-Yi,Zhang Yu,Wang Wei. 2015

[2]Analysis of trace inorganic anions in weak acid salts by single pump cycling-column-switching ion chromatography. Huang, Zhongping,Pan, Zaifa,Wang, Lili,Ni, Chengzhu,Zhu, Yan,Zhu, Zhuyi.

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