Magnetic Stirring Assisted Demulsification Dispersive Liquid-Liquid Microextraction for Preconcentration of Polycyclic Aromatic Hydrocarbons in Grilled Pork Samples

被引：7

作者：

Vichapong, Jitlada ^{[1
,2
]}

Santaladchaiyakit, Yanawath ^{[3
]}

Burakham, Rodjana ^{[4
,5
]}

Srijaranai, Supalax ^{[4
,5
]}

机构：

[1] Mahasarakham Univ, Fac Sci, Dept Chem, Creat Chem & Innovat Res Unit, Maha Sarakham 44150, Thailand

[2] Mahasarakham Univ, Fac Sci, Ctr Excellence Innovat Chem, Maha Sarakham 44150, Thailand

[3] Rajamangala Univ Technol Isan, Fac Engn, Dept Chem, Khon Kaen Campus, Khon Kaen 40000, Thailand

[4] Khon Kaen Univ, Mat Chem Res Ctr, Dept Chem, Fac Sci, Khon Kaen 40002, Thailand

[5] Khon Kaen Univ, Fac Sci, Ctr Excellence Innovat Chem, Khon Kaen 40002, Thailand

来源：

TOXICS | 2019年 / 7卷 / 01期

关键词：

magnetic stirring assisted demulsification dispersive liquid-liquid microextraction; polycyclic aromatic hydrocarbons; grilled pork; high performance liquid chromatography; SOLID-PHASE EXTRACTION; CHROMATOGRAPHY-MASS SPECTROMETRY; EDIBLE OILS; EMULSIFICATION-MICROEXTRACTION; ORGANOPHOSPHORUS PESTICIDES; CARBAMATE; HPLC; CLEANUP; FOOD;

D O I：

10.3390/toxics7010008

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A simple microextraction method, magnetic stirring assisted demulsification dispersive liquid-liquid microextraction, for preconcentration of five polycyclic aromatic hydrocarbons (fluorene, phenanthrene, anthracene, fluoranthrene, and pyrene) was investigated prior to analysis by high performance liquid chromatography. In this method, a mixture of extraction solvent and disperser solvent was rapidly injected into sample solution. The magnetic stirrer agitator aided the dispersion of the extraction solvent into the sample solution. After the formation of an emulsion, the demulsifier was added, resulting in the rapid separation of the mixture into two phases. No centrifugation step was required. Several parameters affecting the extraction efficiency of the proposed method were studied, including addition of salt, kind and volume of extraction solvent, volume of demulsifier solvent, and extraction times. Under the optimum conditions, high enrichment factor, low limit of detections (LODs) and good precision were gained. The proposed method was successfully applied to analysis of polycyclic aromatic hydrocarbon residues in grilled pork samples.

引用

页数：13

共 29 条

[1] Low-density extraction solvent-based solvent terminated dispersive liquid-liquid microextraction combined with gas chromatography-tandem mass spectrometry for the determination of carbamate pesticides in water samples [J].