Free Fatty Acid from Waste Palm Oil Functionalized Magnetic Nanoparticles Immobilized on Surface Graphene Oxide as a New Adsorbent for Simultaneously Detecting Hazardous Polycyclic Aromatic Hydrocarbons and Phthalate Esters in Food Extracts.

Sharifah Mohamad, Shabnam Bakhshaei, Ninie Suhana Abdul Manan, N A Parmin, Siti Khalijah Mahmad Rozi
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引用次数: 3

Abstract

A newly synthesized free fatty acids from waste palm oil functionalized magnetic nanoparticles immobilized on the surface of graphene oxide (FFA@MNP-GO) was successfully synthesized and characterized in this research. The combinations of long alkyl chain of free fatty acid with graphene oxide that consists of large delocalized 77-electron systems and abundant of hydrophilic groups with hydroxyl, epoxide and carboxylic groups offer the determination of simultaneous wide range of polarities of organic pollutants in real matrices through hydrogen bonding, hydrophobic and 77-77 interactions. The fabricated adsorbent was successfully applied as a magnetic solid phase extraction (MSPE) adsorbent for the simultaneous separation of selected phthalate esters (PAEs) and polycyclic aromatic hydrocarbons (PAHs) in apple and cabbage extracts prior to their high performance liquid chromatography with diode-array detector (HPLC-DAD) determination. Factors affecting the extraction efficiency such as amount of adsorbent, desorption solvent, volume of desorption solvent, extraction time, desorption time, pH and sample volume were investigated and optimized. The results revealed that under optimal conditions, the detection limit of selected PAEs and PAHs were in the range of 0.56-0.97 ng mL-1 and 0.02-0.93 ng mL-1, respectively. The spiked recoveries of real apple and cabbage extracts for PAEs and PAHs were in the range of 81.5-117.6% with good relative standard deviation (RSD) (n = 5) less than 10% and 86.7-118.2% with acceptable RSDs (n = 5) ranging from 1.5 to 11.0%, respectively. This study reported for the first time the use of MSPE procedure for simultaneous determination of chosen PAHs and PAEs in real samples including apple and cabbage extracts by using new adsorbent, FFA@MNP-GO.

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氧化石墨烯表面固定化废棕榈油游离脂肪酸功能化磁性纳米颗粒作为同时检测食品提取物中有害多环芳烃和邻苯二甲酸酯的新型吸附材料。
以废棕榈油为原料,成功合成了一种新型的游离脂肪酸功能化磁性纳米颗粒,并将其固定在氧化石墨烯(FFA@MNP-GO)表面。游离脂肪酸的长烷基链与氧化石墨烯的结合,由大的离域77电子系统和丰富的亲水性基团组成,包括羟基、环氧化物和羧基,通过氢键、疏水和77-77相互作用,可以同时测定真实基质中有机污染物的大范围极性。制备的吸附剂成功地作为磁性固相萃取(MSPE)吸附剂用于同时分离苹果和白菜提取物中选定的邻苯二甲酸酯(PAEs)和多环芳烃(PAHs),并进行了高效液相色谱二极管阵列检测器(HPLC-DAD)测定。考察并优化了吸附剂用量、解吸溶剂用量、解吸溶剂体积、萃取时间、解吸时间、pH、样品体积等因素对萃取效率的影响。结果表明,在最佳条件下,所选PAEs和PAHs的检出限分别为0.56 ~ 0.97 ng mL-1和0.02 ~ 0.93 ng mL-1。实苹果和甘蓝提取物对PAEs和PAHs的加标回收率为81.5 ~ 117.6%,良好相对标准偏差(RSD) (n = 5) < 10%;可接受RSD (n = 5)为86.7 ~ 118.2%,可接受RSD (n = 5)为1.5 ~ 11.0%。本研究首次报道了采用新型吸附剂FFA@MNP-GO,利用MSPE同时测定苹果和卷心菜提取物中选定的多环芳烃和多环芳烃。
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来源期刊
Journal of nanoscience and nanotechnology
Journal of nanoscience and nanotechnology 工程技术-材料科学:综合
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审稿时长
3.6 months
期刊介绍: JNN is a multidisciplinary peer-reviewed journal covering fundamental and applied research in all disciplines of science, engineering and medicine. JNN publishes all aspects of nanoscale science and technology dealing with materials synthesis, processing, nanofabrication, nanoprobes, spectroscopy, properties, biological systems, nanostructures, theory and computation, nanoelectronics, nano-optics, nano-mechanics, nanodevices, nanobiotechnology, nanomedicine, nanotoxicology.
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