摘要
本文采用塞曼石墨炉原子吸收法结合石墨管涂镧技术测定了铜基合金中微量锡。文章对比了涂镧管与非涂镧管测定锡时的原子化曲线,对于镧涂层对实验结果的影响及酒石酸的作用进行了讨论,提出了铜化合物可能在管内起到催化作用的观点。实际样品测定相对标准偏差为4.4%,加标回收率101%。
n this article,Sn in copper alloys wasdetermined by Zeeman GFAAS with La-coating technique,The atomization curvesof Sn from La-coated tubes and noncoatedtubes were compared,the effects of La-coating and the addition of tartaric acid inthis experiment were discussed,and thepoint was given that as a catalyst,La com-pound changed the process of Sn atomiza-tion.The RSD was 4.4%and the recoverywas 101%in the determination of Sn in Cu-Sn alloys.
出处
《分析试验室》
CAS
CSCD
北大核心
1995年第6期53-55,共3页
Chinese Journal of Analysis Laboratory
关键词
原子吸收光度法
锡
铜基合金
Tin determination
opperalloy
ZGF AAS
1a-coating graphite tube