Determination of paraben preservatives in seafood using matrix solid-phase dispersion and on-line acetylation gas chromatography−mass spectrometry

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題名:	Determination of paraben preservatives in seafood using matrix solid-phase dispersion and on-line acetylation gas chromatography−mass spectrometry
作者:	丁望賢;Djatmika, Rosalina;Hsieh, Chih-Chung;Chen, Jhih-Ming;Ding, Wang-Hsien
貢獻者:	理學院化學學系
關鍵詞:	acetic anhydride;acetonitrile;Acetylation;Animals;Bass - metabolism;Biota sample analysis;Decapoda (Crustacea) - metabolism;Food Analysis - methods;Food Preservatives - analysis;Food Preservatives - isolation & purification;freeze drying;Gadiformes - metabolism;gas chromatography-mass spectrometry;Gas Chromatography-Mass Spectrometry - methods;GC–MS;glass;Limit of Detection;Matrix solid-phase dispersion;On-line acetylation;Paraben preservatives;Parabens - analysis;Parabens - isolation & purification;preservatives;Seafood - analysis;seafoods;silica;sodium sulfate;solid phase extraction;Solid Phase Extraction - methods;Tilapia - metabolism
日期:	2016-11-15
上傳時間:	2026-04-21 14:51:22 (UTC+8)
出版者:	Elsevier;Netherlands: Elsevier B.V
摘要:	摘要： An effective method for determining four commonly detected paraben preservatives (methyl, ethyl, propyl and butyl paraben) in marketed seafood is presented. This method employs matrix solid-phase dispersion (MSPD) before identification and quantification of the paraben preservatives via on-line acetylation gas chromatography–mass spectrometry (GC–MS). Parameters affecting the extraction efficiency of MSPD were optimized through a Box-Behnken design method. Under optimal condition, 0.5-g of freeze-dried seafood was mixed with 0.5-g of anhydrous sodium sulfate, and dispersed with 1.0-g of Florisil using vortex. After that, the blend was transferred to a glass column containing 1.5-g of silica gel+C18 (w/w, 9:1), which acted as clean-up co-sorbents. Then, target analytes were eluted with 12mL of acetonitrile. The extract was then derivatized on-line in the GC injection-port through reaction with acetic anhydride, and the identity and quantity of the target analytes were determined by the GC–MS system. The limits of quantitation (LOQs) were 0.2 to 1.0ng/g (dry weight). Preliminary results showed that the total concentrations of four selected parabens ranged from 16.7 to 44.7ng/g (dry weight). 其他題名： J Chromatogr B Analyt Technol Biomed Life Sci 出版者： Netherlands: Elsevier B.V 出版日期： 2016-11-15 出處： Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 2016-11, Vol.1036-1037, p.93-99 版權： 2016 Elsevier B.V. 版權： Copyright © 2016 Elsevier B.V. All rights reserved. 識別號： ISSN: 1570-0232 識別號： ISSN: 1873-376X 識別號： EISSN: 1873-376X 識別號： DOI: 10.1016/j.jchromb.2016.10.005 識別號： PMID: 27736692
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