Albero Beatriz, Sánchez-Brunete Consuelo, Miguel Esther, Tadeo José L
Departamento de Medio Ambiente, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), Ctra. de la Coruña km 7, 28040 Madrid, Spain.
Departamento de Medio Ambiente, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), Ctra. de la Coruña km 7, 28040 Madrid, Spain.
Food Chem. 2017 Feb 15;217:660-667. doi: 10.1016/j.foodchem.2016.09.017. Epub 2016 Sep 8.
A multiresidue method for the determination of 17 emerging contaminants in vegetables was developed based on ultrasound-assisted matrix solid-phase dispersion (MSPD). The analysis was performed using isotope dilution gas chromatography tandem mass spectrometry. In the development of the MSPD procedure, different parameters such as sonication and the type of sorbent or extraction solvent were assayed. Manual and in situ derivatization was assayed and the chromatographic response was higher when the reaction takes place in the injection port. The limits of detection obtained for the studied compounds were in the range of 0.1-0.4ngg(-1) for the different vegetables analyzed. The developed method was applied to vegetables obtained from several local markets. At least one of the organophosphates was detected in the analyzed samples at levels ranging from 0.6 to 4.6ngg(-1) and bisphenol A was detected in all the samples at concentration up to 16ngg(-1).
基于超声辅助基质固相分散（MSPD）技术，建立了一种测定蔬菜中17种新兴污染物的多残留方法。采用同位素稀释气相色谱串联质谱法进行分析。在MSPD方法的开发过程中，对不同参数进行了测定，如超声处理以及吸附剂或萃取溶剂的类型。对手动衍生化和原位衍生化进行了测定，结果表明在进样口进行反应时色谱响应更高。对于所分析的不同蔬菜，所研究化合物的检测限在0.1 - 0.4 ng g⁻¹范围内。所建立的方法应用于从当地几个市场采集的蔬菜。在所分析的样品中，至少检测到一种有机磷酸酯，含量范围为0.6至4.6 ng g⁻¹，并且在所有样品中均检测到双酚A，浓度高达16 ng g⁻¹。
