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Title: Methods for detecting and correcting inaccurate results in inductively coupled plasma-atomic emission spectrometry

Abstract

A method for detecting and correcting inaccurate results in inductively coupled plasma-atomic emission spectrometry (ICP-AES). ICP-AES analysis is performed across a plurality of selected locations in the plasma on an unknown sample, collecting the light intensity at one or more selected wavelengths of one or more sought-for analytes, creating a first dataset. The first dataset is then calibrated with a calibration dataset creating a calibrated first dataset curve. If the calibrated first dataset curve has a variability along the location within the plasma for a selected wavelength, errors are present. Plasma-related errors are then corrected by diluting the unknown sample and performing the same ICP-AES analysis on the diluted unknown sample creating a calibrated second dataset curve (accounting for the dilution) for the one or more sought-for analytes. The cross-over point of the calibrated dataset curves yields the corrected value (free from plasma related errors) for each sought-for analyte.

Inventors:
 [1];  [1]
  1. Bloomington, IN
Publication Date:
Research Org.:
Indiana University Foundation
Sponsoring Org.:
USDOE
OSTI Identifier:
992859
Patent Number(s):
7,768,639
Application Number:
12/212,915
Assignee:
The United States of America as represented by the United States Department of Energy (Washington, DC)
DOE Contract Number:  
FG02-98ER14890
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY

Citation Formats

Chan, George C. Y., and Hieftje, Gary M. Methods for detecting and correcting inaccurate results in inductively coupled plasma-atomic emission spectrometry. United States: N. p., 2010. Web.
Chan, George C. Y., & Hieftje, Gary M. Methods for detecting and correcting inaccurate results in inductively coupled plasma-atomic emission spectrometry. United States.
Chan, George C. Y., and Hieftje, Gary M. Tue . "Methods for detecting and correcting inaccurate results in inductively coupled plasma-atomic emission spectrometry". United States. https://www.osti.gov/servlets/purl/992859.
@article{osti_992859,
title = {Methods for detecting and correcting inaccurate results in inductively coupled plasma-atomic emission spectrometry},
author = {Chan, George C. Y. and Hieftje, Gary M},
abstractNote = {A method for detecting and correcting inaccurate results in inductively coupled plasma-atomic emission spectrometry (ICP-AES). ICP-AES analysis is performed across a plurality of selected locations in the plasma on an unknown sample, collecting the light intensity at one or more selected wavelengths of one or more sought-for analytes, creating a first dataset. The first dataset is then calibrated with a calibration dataset creating a calibrated first dataset curve. If the calibrated first dataset curve has a variability along the location within the plasma for a selected wavelength, errors are present. Plasma-related errors are then corrected by diluting the unknown sample and performing the same ICP-AES analysis on the diluted unknown sample creating a calibrated second dataset curve (accounting for the dilution) for the one or more sought-for analytes. The cross-over point of the calibrated dataset curves yields the corrected value (free from plasma related errors) for each sought-for analyte.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2010},
month = {8}
}

Patent:

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