Development and validation of a method for the confirmation of nicarbazin in chicken liver and eggs using LC-electrospray MS-MS according to the revised EU criteria for veterinary drug residue analysis

Shirish Yakkundi, A. Cannavan, Christopher Elliott, T. Lovgren, Diarmuid Kennedy

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

A method is described for the quantitative confirmation of 4,4'-dinitrocarbanilide (DNC), the marker residue for nicarbazin in chicken liver and eggs. The method is based on LC coupled to negative ion electrospray MS-MS of tissue extracts prepared by liquid-liquid extraction. The [M-H](-) ion at m/z 301 is monitored along with two transition ions at m/z 137 and 107 for DNC and the [M-H](-) ion at m/z 309 for the internal standard, d(8)-DNC. The method has been validated according to the new EU criteria for the analysis of veterinary drug residues at 100, 200 and 300 mug kg(-1) in liver and at 10, 30 and 100 mug kg(-1) in eggs. Difficulties concerning the application of the new analytical limits, namely the decision limit (CC) and the detection capability (CC) to the determination of DNC in both liver and eggs are discussed.
Original languageEnglish
Pages (from-to)1985-1989
Number of pages5
JournalAnalyst
Volume126
Issue number11
Publication statusPublished - 2001

ASJC Scopus subject areas

  • Analytical Chemistry

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