Chinese Journal of Chromatography ›› 2017, Vol. 35 ›› Issue (5): 520-525.DOI: 10.3724/SP.J.1123.2016.12004

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Qualitative and quantitative analysis of unknown additives in sulfachlorpyrazine sodium soluble powder

BAO Aiqing, CHEN Huihua, LU Chunbo, ZHOU Wei, WANG Bin, CHEN Xiaolin, LIN Xianjun   

  1. Zhejiang Province Institute of Veterinary Drug and Feedstuff, Hangzhou 311101, China
  • Received:2016-12-04 Online:2017-05-08 Published:2013-08-28
  • Supported by:

    Special Fund for Agro-Scientific Research in the Public Interest (No. 201203023-4).

Abstract:

A qualitative and quantitative analysis of unknown additives in a batch of veterinary soluble sulfachlorpyrazine sodium powder had been implemented. The content of soluble sulfachlorpyrazine sodium powder was determined by potentiometric titration. The result showed that the titration was aberrant. According to the standard method, one of the two identifications was unqualified. It revealed that some unknown compounds may be doped in the sample. Then the screening of the sample through ultra high performance liquid chromatography coupled with quadrupole time-of-flight tandem mass pectrometry (UHPLC-Q/TOF MS) showed that the suspicious additives were found in the sample. Furthermore, double confirmation and content determination were accomplished by high performance liquid chromatography-diode array detection (HPLC-DAD). Mequindox and sulfadimidine as the illegal additives were detected at 40.3 and 16.4 mg/g respectively. By summarizing the above progress of deduction, validation and content determination, a good pattern was developed for screening illegal additives in veterinary drugs which provided a reference for the inspection of illegal adulterations in veterinary drugs.

Key words: high performance liquid chromatography-diode array detection (HPLC-DAD), illegal adulteration, mequindox, sulfachlorpyrazine sodium, sulfadimidine, ultra high performance liquid chromatography coupled with quadrupole time-of-flight tandem mass spectrometry (UHPLC-Q/TOF MS), veterinary drug

CLC Number: