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Title: Method of trivalent chromium concentration determination by atomic spectrometry

Abstract

A method is disclosed for determining the concentration of trivalent chromium Cr(III) in a sample. The addition of perchloric acid has been found to increase the atomic chromium spectrometric signal due to Cr(III), while leaving the signal due to hexavalent chromium Cr(VI) unchanged. This enables determination of the Cr(III) concentration without pre-concentration or pre-separation from chromium of other valences. The Cr(III) concentration may be measured using atomic absorption spectrometry, atomic emission spectrometry or atomic fluorescence spectrometry.

Inventors:
 [1];  [2]
  1. Tbilisi, 0183, GE
  2. Tbilisi, 0101, GE
Issue Date:
Research Org.:
MEMORANDUM OF UNDERSTANDING (MOU)
Sponsoring Org.:
USDOE
OSTI Identifier:
985344
Patent Number(s):
7148068
Application Number:
US patent applciation 10/403,296
Assignee:
Reheulishvili, Aleksandre N. (Tbilisi, 0183, GE); Tsibakhashvili, Neli Ya. (Tbilisi, 0101, GE)
Patent Classifications (CPCs):
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
DOE Contract Number:  
RUSSIAN FED. (MINATOM)
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Reheulishvili, Aleksandre N, and Tsibakhashvili, Neli Ya. Method of trivalent chromium concentration determination by atomic spectrometry. United States: N. p., 2006. Web.
Reheulishvili, Aleksandre N, & Tsibakhashvili, Neli Ya. Method of trivalent chromium concentration determination by atomic spectrometry. United States.
Reheulishvili, Aleksandre N, and Tsibakhashvili, Neli Ya. Tue . "Method of trivalent chromium concentration determination by atomic spectrometry". United States. https://www.osti.gov/servlets/purl/985344.
@article{osti_985344,
title = {Method of trivalent chromium concentration determination by atomic spectrometry},
author = {Reheulishvili, Aleksandre N and Tsibakhashvili, Neli Ya},
abstractNote = {A method is disclosed for determining the concentration of trivalent chromium Cr(III) in a sample. The addition of perchloric acid has been found to increase the atomic chromium spectrometric signal due to Cr(III), while leaving the signal due to hexavalent chromium Cr(VI) unchanged. This enables determination of the Cr(III) concentration without pre-concentration or pre-separation from chromium of other valences. The Cr(III) concentration may be measured using atomic absorption spectrometry, atomic emission spectrometry or atomic fluorescence spectrometry.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2006},
month = {12}
}

Patent:

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Works referenced in this record:

On-line sorption preconcentration of chromium(VI) and its determination by flame atomic absorption spectrometry
journal, November 1997


On-line separation and preconcentration of chromium species in seawater
journal, May 1996


Cr(III) and Cr(VI) on-line preconcentration and determination with high performance flow flame emission spectrometry in natural samples
journal, June 1996


Cr(III) and Cr(VI) On-Line Preconcentration and High-Performance Flow Flame Emission Spectrometric Determination in Water Samples
journal, October 1996