首页 | 本学科首页   官方微博 | 高级检索  
     检索      

改良离子色谱法测定咸鱼中亚硝酸盐的研究
引用本文:吴燕燕,刘法佳,李来好,杨贤庆,周婉君,邓建朝.改良离子色谱法测定咸鱼中亚硝酸盐的研究[J].南方水产,2011,7(6):1-6.
作者姓名:吴燕燕  刘法佳  李来好  杨贤庆  周婉君  邓建朝
作者单位:1. 农业部水产品加工重点实验室,中国水产科学研究院南海水产研究所,广东广州510300
2. 农业部水产品加工重点实验室,中国水产科学研究院南海水产研究所,广东广州510300;广东海洋大学,广东湛江524088
基金项目:广东省海洋与渔业科技推广专项(A200899G02,A200901G03); 中央级公益性科研院所基本科研业务费专项资金(中国水产科学研究院南海水产研究所)资助项目(2007ZD05)
摘    要:文章优化了现有国家标准成鱼中亚硝酸盐的离子色谱测定方法。咸鱼样品先经硝酸银(AgNO3)除去大部分氯离子(Cl-),IC-Ag预处理柱排除剩余Cl-的干扰,再用Ion Pac AS23(4mm×250mm)分析柱和Ion Pac AG23(4mm×50mm)保护柱,以4.5mmol·L-1碳酸钠(NaCO,)和0.8mmol·L-1碳酸氢钠(NaHCO,)的溶液为淋洗液,流速为1.0mL·min-1,抑制型电导检测器检测。结果显示,用该改良方法测定不同品种咸鱼亚硝酸根离子(NO2-)的线性范围为0.01~2.00mg·L-1,相关系数为0.9999,加标回收率为83.0%~101.6%,方法检出限为0.2mg·kg-1。该方法前处理简便、快速,能更加准确测定咸鱼制品的亚硝酸盐质量分数。

关 键 词:咸鱼  亚硝酸盐  离子色谱法  改良

Determination of nitrite in salted fish by improved ion chromatography
WU Yanyan,LIU Fajia,LI Laihao,YANG Xianqing,ZHOU Wanjun,DENG Jianchao.Determination of nitrite in salted fish by improved ion chromatography[J].South China Fisheries Science,2011,7(6):1-6.
Authors:WU Yanyan  LIU Fajia  LI Laihao  YANG Xianqing  ZHOU Wanjun  DENG Jianchao
Institution:WU Yanyan1,LIU Fajia1,2,LI Laihao1,YANG Xianqing1,ZHOU Wanjun1,DENG Jianchao1(1.Key Lab.of Aquatic Product Processing,Ministry of Agriculture,South China Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences,Guangzhou 510300,China,2.Guangdong Ocean University,Zhanjiang 524088,China)
Abstract:We determined the nitrite in salted fish by an improved ion chromatography method. The samples were first pretreated by AgNO3 solution to remove most of the Cl- and the rest of Cl- was excluded by using the Anpelclean TMIC-Ag column. Then the separation of nitrite was determined by suppressed conductivity detection on Ion Pac AS23 (4 mm × 250 mm) analytical column and Ion Pac AG23 (4 mm × 50 ram) guard column using 4. 5 rnmol.L 1 NaCO3 and 0. 8 mmol.L-1NaHCO3 as elution solvents at a flow rate of 1.0 mL.min-1. The linear range of this improved method is 0. 01 -2. 00 mg.L-1 with correlation coefficient (R) of 0. 999 9; the detection limit is 0. 2 mg.kg-1 and the recovery is 83.0% - 101.6%. The method with simple and fast pretreatment can determine nitrite in salted fish products more accurately.
Keywords:salted fish  nitrite  ion chromatography  improvement  
本文献已被 CNKI 维普 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号