摘要
试验旨在建立饲料及饲料原料中铁(Fe)、锰(Mn)、铜(Cu)、锌(Zn)的单波长激发能量色散X射线荧光光谱(MW-EDXRF)测定方法。选用鱼粉、豆粕、大豆、鹰嘴豆、大麦、玉米、高粱、干玉米酒糟、猫粮及狗粮等常见饲料及饲料原料作为样品,采用MW-EDXRF测定。优化样品前处理及分析条件,进行线性拟合、准确度及精密度试验。结果显示,以上4种元素所建标准曲线的线性回归系数R^(2)>0.99,检出限(LOD)分别0.411、0.404、0.408、0.387 mg/kg;相对标准偏差(RSD)在0.5%以内,质控样品的测定值均在证书标准值范围内。研究表明,试验建立的方法简便快速、可靠准确,适用于饲料及饲料原料中重金属的检测工作。
The experiment aimed to establish a monochromatic wavelength excitation-energy dispersive X-ray fluorescence spectrometry(MW-EDXRF)method for determining iron(Fe),manganese(Mn),copper(Cu),and zinc(Zn)in feed and feed raw materials.Selected common feeds such as fish meal,soybean meal,soybeans,chickpeas,barley,sorghum,dry corn distiller's grains,cat food,and dog food as samples,used MW-EDXRF for measurement.After optimizing the pretreatment and analysis conditions,the linearity,accuracy and precision tests were carried out.The results showed that the linear regression coefficient R^(2) of the standard curves established for the above four elements was greater than 0.99,and the detection limits(LOD)were 0.411,0.404,0.408,0.387 mg/kg,respectively.The relative standard deviation(RSD)of the measurement was within 0.5%.The measured values of the quality control samples are within the standard value range of the certificate.The study indicates that the method established in the experiment is simple,fast,reliable,and accurate,and is suitable for the detection of heavy metals in feed and feed raw materials.
作者
潘红蕊
左玥华
张闯
于艳军
宓捷波
苏明跃
PAN Hong-rui;ZUO Yue-hua;ZHANG Chuang;YU Yan-jun;MI Jie-bo;SU Ming-yue
出处
《饲料研究》
CAS
北大核心
2024年第21期120-125,共6页
Feed Research
基金
海关总署科研项目(项目编号:2023HK084)。
关键词
X射线荧光光谱法
单波长激发
饲料及饲料原料
重金属元素
X-ray fluorescence spectrometry
monochromatic wavelength excitation
feed and feed raw materials
heavy metal elements
