DETERMINATION OF CHROMIUM, IRON AND COPPER IN NIOBIUM BY RADIOCHEMICAL PROTON ACTIVATION-ANALYSIS

被引：11

作者：

FAIX, WG ^{[1
]}

MITCHELL, JW ^{[1
]}

KRIVAN, V ^{[1
]}

机构：

[1] BELL TEL LABS INC, MURRAY HILL, NJ 07974 USA

来源：

JOURNAL OF RADIOANALYTICAL CHEMISTRY | 1979年 / 53卷 / 1-2期

关键词：

D O I：

10.1007/BF02517910

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Chromium, iron and copper were determined in niobium by radiochemical proton activation analysis (PAA). The main steps of the technique involved the irradiation of the samples with 13 MeV protons, the post-irradiation decontamination of the sample surface, a two-step separation procedure based on anion exchange from HF and HCl medium, and counting the separated indicator radionuclides with a well-type NaI detector. For a 5-hr irradiation, limits of detection for chromium, iron, and copper were 0.2, 5.0, and 15 ppb respectively. The results obtained by this technique are compared with data obtained by radiochemical neutron activation analysis (NAA) and atomic absorption spectrometry (AAS). © 1979 Akadémiai Kiadó.

引用

页码：97 / 106

页数：10

共 19 条

[1]

AUBOUIN G, 1965, B SOC CHIM FR, P547

[2] DETERMINATION OF COMMON IMPURITIES IN NIOBIUM METAL AND OXIDE BY POWDER-D.C. ARC TECHNIQUE [J].