Gas Purge Microsyringe Extraction Coupled with Dispersive Liquid-Liquid Microextraction for the Determination of Acidic Compounds in Food Packaging Materials

	Gas Purge Microsyringe Extraction Coupled with Dispersive Liquid-Liquid Microextraction for the Determination of Acidic Compounds in Food Packaging Materials
	Zhang, Shijuan ; Sheng, Cuncun ; Zhang, Jiangchunzi ; Li, Yanxin ; You, Jinmao
刊名	FOOD ANALYTICAL METHODS
	2017-05-01
英文摘要	A green, simple and sensitive method was developed for the analysis of volatile carboxylic acids (VFAs) and perfluorocarboxylic acids (PFCAs) in food packaging materials. The acidic compounds in food packaging materials were first extracted by gas purge microsyringe extraction (GP-MSE) with 1.0 mL 0.1 mol center dot L-1 NaOH solution, then the analytes were dispersive liquid-liquid microextracted (DLLME) by 50 mu L chloroform as extraction solvent and 200 mu L acetonitrile as dispersive solvent. The 2-(5-Benzoacridine) ethyl-p-toluenesulfonate (BAETS) with excellent fluorescence property was applied to enhance the high performance liquid chromatography (HPLC) sensitivity. The obtained recoveries for the VFAs ranged from 92.0 to 101 %. The method LODs calculated at a signal-to-noise ratio (S/N) of 3 were in the range of 0.80-3.40 mu g center dot kg(-1), while the LOQs calculated at S/N of 10 were in the range of 2.5-10.2 mu g center dot kg(-1). All compounds were in good linearity with concentration coefficients of higher than 0.997. Perfluorooctanoic acid (PFOA) was found in all of the 15 kinds of samples analyzed with concentrations ranging from 4.86-7.56 mu g center dot kg(-1). Acetic acid, butyric acid, and caprylic acid were found in half of the samples analyzed. The other analytes were also found in more than 30 % samples with concentrations varied between 3.96 and 293 mu g center dot kg(-1).
内容类型	期刊论文
源URL	[http://ir.nwipb.ac.cn/handle/363003/6817]
专题	西北高原生物研究所_中国科学院西北高原生物研究所
推荐引用方式 GB/T 7714	Zhang, Shijuan,Sheng, Cuncun,Zhang, Jiangchunzi,et al. Gas Purge Microsyringe Extraction Coupled with Dispersive Liquid-Liquid Microextraction for the Determination of Acidic Compounds in Food Packaging Materials[J]. FOOD ANALYTICAL METHODS,2017.
APA	Zhang, Shijuan,Sheng, Cuncun,Zhang, Jiangchunzi,Li, Yanxin,&You, Jinmao.(2017).Gas Purge Microsyringe Extraction Coupled with Dispersive Liquid-Liquid Microextraction for the Determination of Acidic Compounds in Food Packaging Materials.FOOD ANALYTICAL METHODS.
MLA	Zhang, Shijuan,et al."Gas Purge Microsyringe Extraction Coupled with Dispersive Liquid-Liquid Microextraction for the Determination of Acidic Compounds in Food Packaging Materials".FOOD ANALYTICAL METHODS (2017).