›› 2009, Vol. 11 ›› Issue (S1): 43-45.

• 药物残留与致病菌检测 • 上一篇    下一篇

流动注射比色法测定饲料中的亚硝酸盐

范志影,朱超   

  1. (中国农业科学院饲料研究所, 北京 100081)
  • 收稿日期:2009-08-15 修回日期:2009-10-28 出版日期:2009-12-16 发布日期:2009-12-15
  • 作者简介:范志影,助理研究员,主要从事动物营养及饲料检测技术方面的研究。Tel:010-82106067;E-mail:fanzhiying@mail.caas.net.cn

Determination of Nitrite in Feed by Flow Injection Analysis

FAN Zhi-ying, ZHU Chao   

  1. (Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China)
  • Received:2009-08-15 Revised:2009-10-28 Online:2009-12-16 Published:2009-12-15

摘要:

采用流动注射分析法测定饲料中的亚硝酸盐。线性范围为20~1 000 μg/L,相关系数r=0.999 9;检出限为2.68 μg/L;用50 μg/L亚硝酸钠标准溶液连续测定7次,其相对标准偏差为2.60%;实际样品的加标回收率为82.8%~106.8%。本方法操作简便、灵敏度较高、线性范围宽、精密度高,适用于饲料中亚硝酸盐的测定。

关键词: 流动注射;亚硝酸盐;饲料

Abstract:

Nitrite in feed was determined by flow injection analysis. The linear range was at 20~1000 μg/L, the correlation coefficient r=0.999 9. The detection limit was 2.68 μg/L, the RSD by measuring seven times with the standard solution was 2.60% and the reclaim ratio was 82.8%~106.8%. The method has the characteristics of simplicity, sensitivity, wide linear range and high precision, which is suitable for nitrite determination in feed.

Key words: flow injection analysis, nitrite, feed

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