利用沸石吸氨氮机理解决预混合饲料中维生素B1测定的准确度研究  

Study on the accuracy of determination of vitamin B1 in premixed feed by zeolite absorption mechanism of ammonia nitrogen

作　　者：李兰[1] 贾铮[1] 肖志明[1] 索德成[1] 刘志英 郭红双 徐思远[1] 田静[1] 樊霞[1] LI Lan;JIA Zheng;XIAO Zhiming;SUO Decheng;LIU Zhiying;GUO Hongshuang;XU Siyuan;TIAN Jing;FAN Xia(Institute of agricultural quality standards and testing technology,Chinese Academy of Agricultural Sciences,national feed quality supervision and Inspection Center(Beijing),Beijing 100081,China;Zhongmu Co.,Ltd,Beijing 100071,China)

机构地区：[1]中国农业科学院农业质量标准与检测技术研究所国家饲料质量监督检验中心渊北京冤,北京100081 [2]中牧股份有限公司,北京100070

出　　处：《中国饲料》2020年第1期64-67,共4页China Feed

基　　金：国家标准制修订项目（20101442-T-469）

摘　　要：沸石粉是目前常用作预混合饲料载体的重要组成部分,但由于沸石粉的吸附作用,常会引起某些预混料中维生素B1含量测定出现较大偏差,回收率低下。本文采用3 mol/mL的氯化铵甲醇溶液作为提取剂,提取液经高效液相色谱进行分离测定,外标法定量。结果表明:通过氯化铵的解吸附作用,使得维生素B1的回收率由原来的70%提高到了90%以上。Zeolite powder is an important part of premixed feed carrier,but due to the adsorption of zeolite powder,it often leads to a large deviation in the determination of vitamin B1 content in some premixed feed,resulting in a low recovery rate.In this paper,3 mol/mL ammonium chloride methanol solution was used as the extraction agent,the test solution was separated and determined by HPLC,and the external standard method was used for quantitative analysis.The results showed that the recovery of vitamin B1 increased from 70%to 90%through the desorption of ammonium chloride.

关 键 词：沸石粉 维生素B1 预混合饲料 解吸附 

分 类 号：S816.17[农业科学—饲料科学]