English  |  正體中文  |  简体中文  |  Items with full text/Total items : 28608/40649
Visitors : 6455465      Online Users : 57
RC Version 4.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Adv. Search

Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/38927

Title: Determination of methyl and inorganic mercury in fish using focused microwave digestion following by Cu2+ addition, sodium tetrapropylborate derivation, n-heptane extraction, and gas chromatography-mass spectrometry
Contributors: 國立臺灣海洋大學:食品科學系
Keywords: fish
inorganic mercury
microwave-assisted digestion
Date: 2004
Issue Date: 2016-11-16T02:27:42Z
Publisher: Journal of Food and Drug Analysis,
Abstract: ABSTRACT: The analytical procedure for analysis of methyl- and inorganic mercury in fish was developed in this study. It involved microwave-assisted digestion with alkaline solution (tetra methyl ammonium hydroxide), addition of Cu++, aqueous-phase derivatization of mercury species with sodium tetraethylborate, and subsequent extraction with n-heptane. The various mercury derivatives were desorbed in the splitless injection port of a gas chromatograph and subsequently analyzed by electron impact mass spectrometry. Optimum conditions allowed the sample throughout to be controlled by the instrumental analysis time (about 8 min per sample) but not by the sample preparation step. At the irradiation power of 15-30, 45, and 60-75 W, sample heating times were only 3.5, 2.5, and 1.5 min, respectively. The recoveries of mercury species were 92.3–96.1% and 93.6–95.5% for methyl- and inorganic mercury, respectively. The proposed method was finally validated by the analysis of three biological certified reference materials (BCR CRM 464 tuna fish, NRC DORM-2 dogfish muscle, and NRC DOLT-2 dogfish liver).
Relation: 12(2)
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/38927
Appears in Collections:[食品科學系] 期刊論文

Files in This Item:

There are no files associated with this item.

All items in NTOUR are protected by copyright, with all rights reserved.


著作權政策宣告: 本網站之內容為國立臺灣海洋大學所收錄之機構典藏,無償提供學術研究與公眾教育等公益性使用,請合理使用本網站之內容,以尊重著作權人之權益。
網站維護: 海大圖資處 圖書系統組
DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback