期刊
JOURNAL OF CHROMATOGRAPHY A
卷 1506, 期 -, 页码 18-26出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.chroma.2017.05.038
关键词
Alcohol-content samples; Dispersive liquid-liquid microextraction; Fast gas chromatography; Pesticide residues
资金
- Scientific Grant Agency of the Slovak Republic VEGA Project [1/0503/14]
- Slovak Research and Development Agency [SK-SRB-2016-0006]
- Program for support excellent teams of young researchers STU
A fast, ecological, and efficient method employing vortex-assisted dispersive, liquid liquid microextraction (DLLME) method for isolation and preconcentration of selected endocrine disrupting pesticides from beverages containing some degree of alcohol was developed. The effect of several extraction parameters, such as selection of extractive solvent, its volume and extraction time, the salt addition was investigated. Four different extractive solvents (chloroform, tetrachloroethane, tetrachloromethane and toluene) and their combinations were evaluated for DLLME. Under the following conditions: 1 mL of fortified sample, 80 mu L of tetrachloroethane, 1.5 mL of water, vortex assistance for 3 min at the speed of 1800 rpm, and no salt addition, the method was validated. Linearity was studied in the concentration range of 0.01-250 mu g/L. with coefficient of correlation ranging between 0.9940 and 1.0000, limits of detection and quantification ranging between 0.02-1.4 mu g/L and 0.07-4.7 mu g/L, respectively. Recoveries were satisfactory in the range of 70-120%, with the exception of diphenyl, alachlor and fenarimol at the lowest concentration level and p,p-DDE at concentration level of 100 and 250 mu g/L. The applicability of the developed and validated method was proved by the analysis of real samples. (C) 2017 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据