氢化物发生-电感耦合等离子体原子发射光谱法测定饲料级磷酸氢钙中砷、汞、镉等有害氢化元素  

Determination of Harmful Hydrogenated Elements in Feed Dicalcium Phosphate by Hydride Generation -inductively Coupled Plasma Atomic Emission Spectrometry

作　　者：姚祖英[1] 胡必明[1] 曹勇[1] 张晓波[1] 

机构地区：[1]自贡鸿鹤化工股份有限公司,自贡643000

出　　处：《中国饲料添加剂》2013年第9期29-33,共5页China Feed Additive

摘　　要：利用氢化反应原理，实现被测元素与基体溶液有效分离，减小甚至消除复杂背景对测定的影响。空白溶液的检出限均不大于1μg／L；样品溶液（0．5％）中各元素的检出限在2～4μg／L间。线性动态范围较宽，至少在4个数量级范围内线性关系较好。该方法中各被测元素的回收率在90％～111．5％之间，检测结果的RSD均小于10％。According to the principle of hydride generation, realizing an effective separation of detected elements from the substrate solution and reducing, or even eliminating the influence of the complex background. The blank solution detection limit is smaller than 1 μg/L. The detection limits of the sample solution （0.5 % ） are ： smaller than 2 - 4μg,/L. The linear dynamic range is wide. Linear relation is good at least 4 orders. The recovery rates of detected elements were 90% 111.5% ,the relative standard deviations were smaller than 10%.

关 键 词：连续流动 氢化物发生 电感耦合等离子体原子发射光谱法 饲料级磷酸氢钙 有害元素 测定 

分 类 号：S816.71[农业科学—饲料科学]