FOOD SCIENCE ›› 2010, Vol. 31 ›› Issue (6): 213-215.doi: 10.7506/spkx1002-6630-201006050

• Analysis & Detection • Previous Articles     Next Articles

Ion Chromatographic Determination of Nitrite and Nitrate in Chinese Preserved Sausages

FENG Shun-qing1,LI Ming-zhu2,LAO Jin-hua3   

  1. 1. Key Laboratory of Aquatic Food Product Safety, Ministry of Education, Instrumental Analysis and Research Center, Sun Yat-sen
    University, Guangzhou 510275, China;2. Department of Biochemistry, School of Life Science, Sun Yat-sen University,
    Guangzhou 510275, China;3. School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
  • Received:2009-01-21 Online:2010-03-15 Published:2010-12-29
  • Contact: FENG Shun-qing1 E-mail:ncsfshq@mail.sysu.edu.cn

Abstract:

A method using ion chromatography with electrochemical detection was developed for the determination of nitrite and nitrate in Chinese preserved sausages. Sample preparation was achieved by ultrapure water extraction with the assistance of ultrasonic, elimination of interference of fat, protein and a large number of chlorine ions and filtration through a 0.45μm pore size nylon membrane. In the ion chronographic analysis, an IonPac AS9-HC analytical column (4 mm × 250 mm) protected with an IonPac AG9-HC guard column (4 mm × 50 mm) was used, and the eluant was 9.0 mmol/L Na2CO3 aqueous solution. Nitrite and nitrate both presented a good linear relationship between peak area and concentration. The limits of detection of the method for nitrite and nitrate were 0.5 and 1.0 mg/kg, respectively.

Key words: ion chromatography, Chinese preserved sausage, nitrite, nitrate

CLC Number: