饲料中总砷的测定——原子荧光光谱法  

Determination of total arsenic in feeds with atomic fluorescent spectrum method

作　　者：陈莉[1] 杨汉卿[1] 李宏[1] 李明涛[1] 

机构地区：[1]农业部饲料质量监督检验测试中心(西安)

出　　处：《中国饲料》2005年第5期27-28,31,共3页China Feed

摘　　要：采用原子荧光光谱法测定饲料中总砷的含量,仪器的参数为:灯电流80mA;负高压320V;积分时间3s;泵速60r/min;主气650mL/min;辅气800mL/min。方法的线性范围为0～25ng/mL,r=0.9999,平均回收率达97.8%。与国标法试验对比,两方法相对偏差在0.5%～4.4%之间。本方法具有灵敏度高、检出限低、操作简便、省时、快捷的特点。Using atomic fluorescent spectrum to determine the content of the total arsenic in feed,the parameters of the apparatus were:light current 80 mA;mi - high voltage 320 V;integrating time 3 s;pump speed 60 r/min;main gas 650 mL/min;assistant gas 800 mL/min.Linearity range of the method:0 ～ 25 ng/mL,r = 0.9999,average recovery rate 97.8 %.Comparing with state criterion,the realtive deviation of two methods was 0.5 % ～ 4.4 %.The method had high sensitivity,low detecting limit,operating easy,saving time,shortcut.

关 键 词：饲料 总砷 平均回收率 原子荧光光谱法 含量 国标法 操作 相对偏差 灯电流 方法 

分 类 号：S816[农业科学—饲料科学]