摘要
本文建立了一种快速测定地质样品中Pt、Pd的方法。试样经过700℃高温焙烧后,采用王水-盐酸处理样品,加入强碱性阴离子交换树脂进行振荡吸附,吸附物灰化后,用王水溶解至尽近后,采用5%HCl浸提,采用Rh作为内标,电感耦合等离子体质谱法测定。Pt、Pd的检出限分别为0.2μg·L^(-1)和0.4μg·L^(-1),精密度(RSD,n=12)分别为4.01%,4.19%,加标回收率分别在97.1%103.5%,101.5%103.2%之间,通过对7件国家标准物质(GBW07288GBW07294)进行测定,测定值与标准值基本一致。该方法简单快速、准确度高、精密度良好,测定值与推荐值基本一致。
A method was developed for quick determination of Pt and Pd in geological samples in this paper.After the calcination at 700℃ and the samples treated by auqaregia-hydrochloric acid.Pt and Pd were absorbed with strongly basic anion exchange resin on a vibrator.The adsorption material is ashed and dissolved with aqua regia,then extracted by 5% HCI.The concentrations of Pt and Pd were determined by ICP-MS internal standard method（Rh as the internal standard）.The detection limits obtained were 0.2 μg·L^（-1） or Pt and0.4μg·L^（-1） for Pd,RSD were 4.01% for Pt and 4.19% for Pd,recoveries were between 97.1% to 103.5%and 101.5% to 103.2% respectively.By detect 7 national standard sample（GBW07288-GBW07294）,the estimate value is consistent with the standard value basically.This method is simple and quick with good accuracy and precision.The determination results matched well with the certified value.
作者
周小林
况云所
杨刚
庞文品
杨博为
ZHOU Xiao-lin;KUANG Yun-suo;YANG Gang;PANG Wen-pin;YANG Bo-wei(Guizhou Central Laboratory of Geology and Mineral Resources, Guiyang 550018, Guizhou, China;Guiyang Supervision in Inspection Center of Mineral Resources, Ministry of Land and Resources, Guiyang 550018, Guizhou, China;School of Materials and Chemistry, China University of Geosciences, Wuhan 430074, Hubei, China)
出处
《贵州地质》
2018年第1期65-68,共4页
Guizhou Geology
基金
贵州省地质矿产勘查开发局科研项目(合同编号:黔地矿科合[2016]36号)
