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 000μg/L,相关系数r=0.999 9;检出限为2.68μg/L;用50μg/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。
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.
出处
《中国农业科技导报》
CAS
CSCD
2009年第S1期43-45,共3页
Journal of Agricultural Science and Technology
关键词
流动注射
亚硝酸盐
饲料
flow injection analysis
nitrite
feed
