Plating of iridium for use as high purity electrodes in the assay of ultrapure copper

Martin Mathews, B. D. LaFerriere, L. R. Pederson, E. W. Hoppe

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Fabrication of high-purity iridium electrodes using electrochemical deposition was performed to produce anodes used to assay ultrapure copper for extremely low uranium and thorium contamination primarily in support of the Majorana collaboration. High-purity iridium was deposited using a low current density under a constant voltage to produce a smooth film over a micron thick. The current efficiency was 23 % using an electrolyte of 40 mM IrCl3·4H2O, and H2SO4 employing polished iridium wires as electrodes at an elevated temperature of 80 °C. The electrodes can be converted to iridium oxide with different oxidation states by heating them in air for various periods.

Original languageEnglish
Pages (from-to)1-9
Number of pages9
JournalJournal of Radioanalytical and Nuclear Chemistry
DOIs
Publication statusAccepted/In press - 29 Jan 2016
Externally publishedYes

Fingerprint

Iridium
Plating
Copper
Assays
Electrodes
Electrochemical electrodes
Thorium
Uranium
Electrolytes
Anodes
Contamination
Current density
Wire
Heating
Fabrication
Oxidation
Air
Electric potential
Temperature
Oxides

Keywords

  • Copper assay
  • Electrodeposition
  • ICPMS
  • Iridium
  • Majorana
  • Oxidation

ASJC Scopus subject areas

  • Analytical Chemistry
  • Nuclear Energy and Engineering
  • Health, Toxicology and Mutagenesis
  • Pollution
  • Public Health, Environmental and Occupational Health
  • Spectroscopy
  • Radiology Nuclear Medicine and imaging

Cite this

Plating of iridium for use as high purity electrodes in the assay of ultrapure copper. / Mathews, Martin; LaFerriere, B. D.; Pederson, L. R.; Hoppe, E. W.

In: Journal of Radioanalytical and Nuclear Chemistry, 29.01.2016, p. 1-9.

Research output: Contribution to journalArticle

Mathews, Martin ; LaFerriere, B. D. ; Pederson, L. R. ; Hoppe, E. W. / Plating of iridium for use as high purity electrodes in the assay of ultrapure copper. In: Journal of Radioanalytical and Nuclear Chemistry. 2016 ; pp. 1-9.
@article{f4240b12706d4d6fa1b6407ed6d77247,
title = "Plating of iridium for use as high purity electrodes in the assay of ultrapure copper",
abstract = "Fabrication of high-purity iridium electrodes using electrochemical deposition was performed to produce anodes used to assay ultrapure copper for extremely low uranium and thorium contamination primarily in support of the Majorana collaboration. High-purity iridium was deposited using a low current density under a constant voltage to produce a smooth film over a micron thick. The current efficiency was 23 {\%} using an electrolyte of 40 mM IrCl3·4H2O, and H2SO4 employing polished iridium wires as electrodes at an elevated temperature of 80 °C. The electrodes can be converted to iridium oxide with different oxidation states by heating them in air for various periods.",
keywords = "Copper assay, Electrodeposition, ICPMS, Iridium, Majorana, Oxidation",
author = "Martin Mathews and LaFerriere, {B. D.} and Pederson, {L. R.} and Hoppe, {E. W.}",
year = "2016",
month = "1",
day = "29",
doi = "10.1007/s10967-016-4697-5",
language = "English",
pages = "1--9",
journal = "Journal of Radioanalytical Chemistry",
issn = "0022-4081",
publisher = "Elsevier BV",

}

TY - JOUR

T1 - Plating of iridium for use as high purity electrodes in the assay of ultrapure copper

AU - Mathews, Martin

AU - LaFerriere, B. D.

AU - Pederson, L. R.

AU - Hoppe, E. W.

PY - 2016/1/29

Y1 - 2016/1/29

N2 - Fabrication of high-purity iridium electrodes using electrochemical deposition was performed to produce anodes used to assay ultrapure copper for extremely low uranium and thorium contamination primarily in support of the Majorana collaboration. High-purity iridium was deposited using a low current density under a constant voltage to produce a smooth film over a micron thick. The current efficiency was 23 % using an electrolyte of 40 mM IrCl3·4H2O, and H2SO4 employing polished iridium wires as electrodes at an elevated temperature of 80 °C. The electrodes can be converted to iridium oxide with different oxidation states by heating them in air for various periods.

AB - Fabrication of high-purity iridium electrodes using electrochemical deposition was performed to produce anodes used to assay ultrapure copper for extremely low uranium and thorium contamination primarily in support of the Majorana collaboration. High-purity iridium was deposited using a low current density under a constant voltage to produce a smooth film over a micron thick. The current efficiency was 23 % using an electrolyte of 40 mM IrCl3·4H2O, and H2SO4 employing polished iridium wires as electrodes at an elevated temperature of 80 °C. The electrodes can be converted to iridium oxide with different oxidation states by heating them in air for various periods.

KW - Copper assay

KW - Electrodeposition

KW - ICPMS

KW - Iridium

KW - Majorana

KW - Oxidation

UR - http://www.scopus.com/inward/record.url?scp=84955569741&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84955569741&partnerID=8YFLogxK

U2 - 10.1007/s10967-016-4697-5

DO - 10.1007/s10967-016-4697-5

M3 - Article

AN - SCOPUS:84955569741

SP - 1

EP - 9

JO - Journal of Radioanalytical Chemistry

JF - Journal of Radioanalytical Chemistry

SN - 0022-4081

ER -