Zeolite/Fe3O4 as a new sorbent in magnetic solid-phase extraction followed by gas chromatography for determining phthalates in aqueous samples

被引:58
作者
Mollahosseini, Afsaneh [1 ]
Toghroli, Mina [1 ]
Kamankesh, Marzieh [1 ]
机构
[1] Iran Univ Sci & Technol, Dept Chem, Spect Micro & Nanoextract Lab, Tehran, Iran
关键词
Central composite design; Gas chromatography; Magnetic solid-phase extraction; Phthalates; Zeolites; TANDEM MASS-SPECTROMETRY; BAR SORPTIVE EXTRACTION; AROMATIC-HYDROCARBONS; OXIDE NANOPARTICLES; SCREENING METHOD; WATER SAMPLES; ESTERS; MICROEXTRACTION; CARBON; FIBER;
D O I
10.1002/jssc.201500510
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
In the present study, for the first time, we successfully employed zeolite/Fe3O4 as a new magnetic nanoparticle sorbent in magnetic solid-phase extraction for determining phthalates in aqueous samples. Gas chromatography with flame ionization detection was used to detect the target analytes as a powerful instrumental analysis. Affecting parameters in the extraction process, including the amount of adsorbent, adsorption and desorption time, and volume of desorption solvent, were optimized using a response surface methodology based on central composite design. Under the optimum conditions, the linear range for dibutyl phthalate and bis(2-ethylhexyl phthalate) was varied in the interval of 10-1700 and 10-1200 mu g/L, respectively. Limits of detection were 2.80 mu g/L for dibutyl phthalate and 3.20 mu g/L for bis(2-ethylhexyl phthalate). The recovery value for the extraction of target analytes was between 97 and 111%. The repeatability and reproducibility of the new proposed method were obtained: 10-13% and 13-13.5%, respectively. The increased sensitivity in using the proposed method has been demonstrated. Compared with previous methods, the new proposed method is an accurate, rapid, and reliable sample-pretreatment method.
引用
收藏
页码:3750 / 3757
页数:8
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