摘要
应用电感耦合等离子-质谱技术(ICP-MS),建立饲料中钠、镁、铬、锰、铁、铜、锌、砷、硒、镉和铅等元素的测定方法。对饲料样品的前处理方法、仪器工作参数和11种元素标准曲线进行优化;并以加标回收、分析方法比对和重复测试说明方法的准确性和精密性。方法在0~1 000 ng/ml范围内线性良好,仪器检出限为0.557 7~5.072 ng/ml,具有良好的精密度,其回收率在88.1%~104.4%之间,相对标准偏差小于5.0%。同时与原子吸收和原子荧光方法进行比对,测定结果相近。所建立的方法简单、快速,可替代原子吸收和原子荧光方法测定饲料中的11种金属元素,为饲料的质量控制提供理想的元素分析方法。
In the present research,a novel method for quantitative analysis of multi-elements(Na,Mg,Cr,Mn,Fe,Cu,Zn,As,Se,Cd and Pb)in animal feed was established by using ICP-MS technology.The pretreatment method,instrument operating parameters and 11 element calibration curves of the feed samples were optimized.The accuracy and precision of the methods were illustrated by the addition of the standard recovery,analysis methods,and repeated tests.The linear calibration curve was established for each element between 0~1 000 ng/ml.The limit of detection was between 0.557 7~5.072 ng/ml and the spiked recovery was between 88.1%~104.4%,and relative standard deviation was less than 5.0%.In the method comparsion,there was no difference among ICP-MS,AAS and AFS.The established method is simple and fast,and it is an ideal analysis technique to substitute AAS and AFS for determination of multi-elements in animal feed.
作者
黄建立
林滉
陈凌锋
Huang Jianli;Lin Huang;Chen Lingfeng
出处
《饲料工业》
北大核心
2019年第18期54-58,共5页
Feed Industry
