Paper Title:
Determination of Iridium in Platinum Jewelry Alloys by ICP-AES
  Abstract

A method for the determination of iridium impurity in platinum jewelry alloys by inductively coupled plasma atomic emission spectrometry (ICP-AES) was reported. Spectral interferences of Au, Cr, Cu, Fe, Ni and Pt to Ir at specific wavelengths have been investigated. The spectral coincidence profiles were recorded and interfering lines were identified. The optimum analytical line of 38 iridium emission lines was 215.268 nm {156}. Ir 212.681 {158} and Ir 205.116 nm {164} can be used as analytical lines after rectified by Inter-Element Corrections (IEC) coefficients. Ir 186.250 nm is a new candidate analytical line. Ir 224.268 nm is not being recommended by reason of the severe spectral interference from Cu and Ni. Ir 322.08 nm is not being recommended for its weaker emission intensity. Validation was performed in terms of detection limits, linearity, precision and recovery. The relative standard deviations (RSD) and recoveries of the method are in the range of 0.59%~1.84% and 85.5%~93.2%, respectively.

  Info
Periodical
Edited by
Yiyi Zhouzhou and Qi Luo
Pages
248-253
DOI
10.4028/www.scientific.net/AMM.79.248
Citation
R. F. Gao, Y. Y. Du, P. Yang, "Determination of Iridium in Platinum Jewelry Alloys by ICP-AES", Applied Mechanics and Materials, Vol. 79, pp. 248-253, 2011
Online since
July 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Kai Li Lin, Zheng Wang, Jiang Chang, Hui Jun Zou, Jian Xi Lu
Abstract:Calcium is generally determined by EDTA titration after separation of phosphate radicals, and the phosphorus is determined by weigh method....
143
Authors: Punnee Sittidech, Manop Sittidech
Abstract:Polybrominated biphenyls (PBBs) and polybrominated biphenyl ethers (PBDEs) are substances used in electrical and electronic products. They...
337
Authors: Ri Bo Ning, Song Ning Xu, Qian Li
Chapter 16: Tooling Testing and Evaluation of Materials
Abstract:An improved method of treating data from standard addition analysis for tracing components in samples was proposed. This method was based on...
2630
Authors: Yan Lu, Jun Bo Zhong, Jian Zhang Li, Wei Hu
Chapter 4: Water Purification and Wastewater Treatment
Abstract:It has been found that the photocatalytic activity of Bi2O3 toward the decolorization of Methyl Orange solution can be...
645
Authors: Ion Nae, Gabriela Cristina Ionescu, Octavian Narcis Ionescu
Chapter 1: Advanced Machining Technologies and Surface Engineering
Abstract:From practical experience is well known that the establishment of the right values for the cutting regime parameters (without taking into...
117