REQUIMTE/LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, Rua Dr° António Bernardino de Almeida, 431, 4249-015 Porto, Portugal.
REQUIMTE/LAQV, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal.
J Agric Food Chem. 2023 Mar 1;71(8):3898-3905. doi: 10.1021/acs.jafc.2c07873. Epub 2023 Feb 15.
A new application of graphene-type materials as an alternative cleanup sorbent in a quick, easy, cheap, effective, rugged, and safe (QuEChERS) procedure combined with GC-ECD/GC-MS/GC-MS/MS detection was successfully used for the simultaneous analysis of 12 brominated flame retardants in cultivar samples. The chemical, structural, and morphological properties of the graphene-type materials were evaluated. The materials exhibited good adsorption capability of matrix interferents without compromising the extraction efficiency of target analytes when compared with other cleanups using commercial sorbents. Under optimal conditions, excellent recoveries were obtained, ranging from 90 to 108% with relative standard deviations of <14%. The developed method showed good linearity with a correlation coefficient above 0.9927, and the limits of quantification were in the range of 0.35-0.82 μg/kg. The developed QuEChERS procedure using reduced graphite oxide (rGO) combined with GC/MS was successfully applied in 20 samples, and the pentabromotoluene residues were quantified in two samples.
一种将石墨烯类材料作为替代净化吸附剂的新应用，在一种快速、简便、廉价、有效、耐用和安全（QuEChERS）的方法中与 GC-ECD/GC-MS/GC-MS/MS 检测相结合，成功地用于同时分析 12 种溴系阻燃剂在 品种样品中的应用。评估了石墨烯类材料的化学、结构和形态特性。与使用商业吸附剂的其他净化方法相比，该材料在不影响目标分析物提取效率的情况下，对基质干扰物表现出良好的吸附能力。在最佳条件下，获得了良好的回收率，范围为 90-108%，相对标准偏差小于 14%。开发的方法具有良好的线性关系，相关系数大于 0.9927，定量限范围为 0.35-0.82μg/kg。使用还原氧化石墨（rGO）与 GC/MS 相结合的 QuEChERS 方法成功地应用于 20 个样品中，并对两个样品中的五溴甲苯残留量进行了定量。
