微波消解原子荧光光谱法测定含铁尘泥中铅  

Determination of Lead in Iron-containing Dust by Microwave Digestion Atomic Fluorescence Spectrometry

作　　者：卢艳蓉[1] 张素兰[1] Lu Yan-rong;Zhang Su-lan(Technical Center of Inner Mongolia Baotou Steel Union Co.,Ltd.,Baotou 014010,Inner Mongolia Autonomous Region,China)

机构地区：[1]内蒙古包钢钢联股份有限公司技术中心,内蒙古包头014010

出　　处：《包钢科技》2018年第3期63-66,共4页Science & Technology of Baotou Steel

摘　　要：试样经微波消解后,用铁氰化钾将Pb^(+2)氧化为Pb^(+4),在盐酸(5+95)的载流液中,以硼氢化钾为还原剂,利用铅与硼氢化钾作用能产生气态氢化物的特点,建立氢化物发生-原子荧光光谱法测定含铁尘泥中铅。含铁尘泥中铅的检出限为0.091 9μg/L,测定上限为0.5%,铁矿石标样、含铁尘泥试样(n=11)相对标准偏差均小于5.0%;标准加入回收率为97%~104%。该方法快速、简便,可用于测定含铁尘泥中铅。After microwave digestion,Pb^（＋2） in the sample was oxidized to Pb^（＋4） by potassium ferricyanide. In the carrying current solution of hydrochloric acid（ 5 ＋ 95）,potassium borohydride was used as reducing agent and with the characteristics that gaseous hydrides can be produced by the reaction lead and potassium borohydride. The method of hydride generation-atomic fluorescence spectrometry for determining lead in iron containing dust was established. The detection limit of lead in iron containing dust was 0. 091 9 μg/L,the upper limit was 0. 5%,the relative standard deviation of iron ore standard sample and iron containing dust sample（ n = 11） was less than 5. 0%,and the standard recovery rate was97% ~ 104%. The method is fast and simple,which can be used for determining lead in iron containing dust.

关 键 词：微波消解 原子荧光光谱法 含铁尘泥 铅 

分 类 号：O657.31[理学—分析化学]