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Determination of ultra-trace amounts of Fe in AgNO₃ solutions by means of isotope dilution analysis applying an inductively coupled plasma mass spectrometer equipped with a dynamic reaction cell

Lieve Balcaen UGent, Ingrid Geuens, Luc Moens UGent and Frank Vanhaecke UGent (2003) ANALYTICAL AND BIOANALYTICAL CHEMISTRY. 377(6). p.1020-1025
abstract
The development of an ICP-MS method for the determination of ultra-trace amounts of Fe in AgNO3 solutions using isotope dilution for calibration is described. AgNO3 solutions are used as raw materials in the production of traditional photographic materials, and it is known that contamination with metal traces can influence the quality of the films thus produced. After adding an appropriate amount of an Fe-54-enriched spike and permitting isotopic equilibration to take place, Ag was selectively removed from the solutions by precipitation as AgBr. Although to some extent, co-precipitation of Fe is possible under the given circumstances, an incomplete recovery of the analyte element did not affect the accuracy of the results, owing to the use of isotope dilution for calibration. NH3 was used as a reaction gas in a quadrupole-based ICP-MS instrument, equipped with a dynamic reaction cell (DRC), providing interference-free measurement of the Fe-54/Fe-56 ratio. The limit of detection (LOD) obtained using this procedure was approximately 0.01 mug g(-1). This is an excellent value in comparison with the detection limit obtained with the more traditional approach: sample dilution and external calibration with a Fe standard solution (LOD similar to1 mug g(-1)). To validate the method, recovery experiments were carried out. In all instances, a quantitative recovery was established. Finally, the method was applied to the analysis of AgNO3 solutions. A large variation in Fe concentration was observed. Depending on the Fe content in the samples, relative standard deviations typically ranged between 1 and 14%.
Please use this url to cite or link to this publication:
author
organization
alternative title
Determination of ultra-trace amounts of Fe in AgNO3 solutions by means of isotope dilution analysis applying an inductively coupled plasma mass spectrometer equipped with a dynamic reaction cell
year
type
journalArticle (original)
publication status
published
subject
keyword
dynamic reaction cell, ICP-MS, isotope dilution, trace elements, photographic materials, ICP-DRC-MS, PHOTOGRAPHIC-EMULSIONS, ELEMENTS, WATER, CONTAINERS, COLLISION, RUTHENIUM, REAGENTS, SAMPLES, STORAGE
journal title
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
Anal. Bioanal. Chem.
volume
377
issue
6
pages
1020 - 1025
Web of Science type
Article
Web of Science id
000186279300013
JCR category
CHEMISTRY, ANALYTICAL
JCR impact factor
1.715 (2003)
JCR rank
27/67 (2003)
JCR quartile
2 (2003)
ISSN
1618-2642
DOI
10.1007/s00216-003-2177-6
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
208149
handle
http://hdl.handle.net/1854/LU-208149
date created
2004-04-19 10:36:00
date last changed
2012-11-13 16:48:28
@article{208149,
  abstract     = {The development of an ICP-MS method for the determination of ultra-trace amounts of Fe in AgNO3 solutions using isotope dilution for calibration is described. AgNO3 solutions are used as raw materials in the production of traditional photographic materials, and it is known that contamination with metal traces can influence the quality of the films thus produced. After adding an appropriate amount of an Fe-54-enriched spike and permitting isotopic equilibration to take place, Ag was selectively removed from the solutions by precipitation as AgBr. Although to some extent, co-precipitation of Fe is possible under the given circumstances, an incomplete recovery of the analyte element did not affect the accuracy of the results, owing to the use of isotope dilution for calibration. NH3 was used as a reaction gas in a quadrupole-based ICP-MS instrument, equipped with a dynamic reaction cell (DRC), providing interference-free measurement of the Fe-54/Fe-56 ratio. The limit of detection (LOD) obtained using this procedure was approximately 0.01 mug g(-1). This is an excellent value in comparison with the detection limit obtained with the more traditional approach: sample dilution and external calibration with a Fe standard solution (LOD similar to1 mug g(-1)). To validate the method, recovery experiments were carried out. In all instances, a quantitative recovery was established. Finally, the method was applied to the analysis of AgNO3 solutions. A large variation in Fe concentration was observed. Depending on the Fe content in the samples, relative standard deviations typically ranged between 1 and 14\%.},
  author       = {Balcaen, Lieve and Geuens, Ingrid and Moens, Luc and Vanhaecke, Frank},
  issn         = {1618-2642},
  journal      = {ANALYTICAL AND BIOANALYTICAL CHEMISTRY},
  keyword      = {dynamic reaction cell,ICP-MS,isotope dilution,trace elements,photographic materials,ICP-DRC-MS,PHOTOGRAPHIC-EMULSIONS,ELEMENTS,WATER,CONTAINERS,COLLISION,RUTHENIUM,REAGENTS,SAMPLES,STORAGE},
  language     = {eng},
  number       = {6},
  pages        = {1020--1025},
  title        = {Determination of ultra-trace amounts of Fe in AgNO\unmatched{2083} solutions by means of isotope dilution analysis applying an inductively coupled plasma mass spectrometer equipped with a dynamic reaction cell},
  url          = {http://dx.doi.org/10.1007/s00216-003-2177-6},
  volume       = {377},
  year         = {2003},
}

Chicago
Balcaen, Lieve, Ingrid Geuens, Luc Moens, and Frank Vanhaecke. 2003. “Determination of Ultra-trace Amounts of Fe in AgNO₃ Solutions by Means of Isotope Dilution Analysis Applying an Inductively Coupled Plasma Mass Spectrometer Equipped with a Dynamic Reaction Cell.” Analytical and Bioanalytical Chemistry 377 (6): 1020–1025.
APA
Balcaen, L., Geuens, I., Moens, L., & Vanhaecke, F. (2003). Determination of ultra-trace amounts of Fe in AgNO₃ solutions by means of isotope dilution analysis applying an inductively coupled plasma mass spectrometer equipped with a dynamic reaction cell. ANALYTICAL AND BIOANALYTICAL CHEMISTRY, 377(6), 1020–1025.
Vancouver
1.
Balcaen L, Geuens I, Moens L, Vanhaecke F. Determination of ultra-trace amounts of Fe in AgNO₃ solutions by means of isotope dilution analysis applying an inductively coupled plasma mass spectrometer equipped with a dynamic reaction cell. ANALYTICAL AND BIOANALYTICAL CHEMISTRY. 2003;377(6):1020–5.
MLA
Balcaen, Lieve, Ingrid Geuens, Luc Moens, et al. “Determination of Ultra-trace Amounts of Fe in AgNO₃ Solutions by Means of Isotope Dilution Analysis Applying an Inductively Coupled Plasma Mass Spectrometer Equipped with a Dynamic Reaction Cell.” ANALYTICAL AND BIOANALYTICAL CHEMISTRY 377.6 (2003): 1020–1025. Print.