Facile synthesis of magnetic carbon nitride nanosheets and its application in magnetic solid phase extraction for polycyclic aromatic hydrocarbons in edible oil samples
Facile synthesis of magnetic carbon nitride nanosheets and its application in magnetic solid phase extraction for polycyclic aromatic hydrocarbons in edible oil samples
复制标题
磁性氮化碳纳米片的简易合成及其在磁性固相萃取食用油样品中多环芳烃中的应用
DOI：
10.1016/j.talanta.2015.10.059
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发表时间：
2016
期刊：
影响因子：
6.1
通讯作者：
Feng Yu-Qi
中科院分区：
文献类型：
--
作者：
Zheng Hao-Bo;Ding Jun;Zheng Shu-Jian;Zhu Gang-Tian;Yuan Bi-Feng;Feng Yu-Qi
在这项研究中，我们提出了一种简单的物理共混制备磁性氮化碳（CN）纳米片的方法。以尿素为原料制备的低成本CN纳米片具有高π共轭结构，将其作为磁性固相萃取（MSPE）吸附剂用于食用油样品中多环芳烃（PAHs）的萃取。此外，样品预处理时间可在10 min内进行。因此，将磁性CN纳米片MSPE与气相色谱-质谱（GC/MS）联用，建立了一种简单、廉价的食用油中多环芳烃的分析方法。八种多环芳烃的定量限为0.4 - 0.9纳克/克。日内和日间相对标准偏差（RSD）均小于15.0%。大豆油中多环芳烃的加标回收率为91.0%~124.1%，相对标准偏差小于10.2%。两者合计，所提出的方法提供了一个简单的和具有成本效益的选择，方便分析油样中的多环芳烃。
In this study, we proposed a method to fabricate magnetic carbon nitride (CN) nanosheets by simple physical blending. Low-cost CN nanosheets prepared by urea possessed a highly π-conjugated structure; therefore the obtained composites were employed as magnetic solid-phase extraction (MSPE) sorbent for extraction of polycyclic aromatic hydrocarbons (PAHs) in edible oil samples. Moreover, sample pre-treatment time could be carried out within 10 min. Thus, a simple and cheap method for the analysis of PAHs in edible oil samples was established by coupling magnetic CN nanosheets-based MSPE with gas chromatography-mass spectrometry (GC/MS) analysis. Limits of quantitation (LOQs) for eight PAHs ranged from 0.4 to 0.9 ng/g. The intra- and inter-day relative standard deviations (RSDs) were less than 15.0%. The recoveries of PAHs for spiked soybean oil samples ranged from 91.0% to 124.1%, with RSDs of less than 10.2%. Taken together, the proposed method offers a simple and cost-effective option for the convenient analysis of PAHs in oil samples.