Related Experiment Video
Updated: Aug 25, 2026

Flame Experiments at the Advanced Light Source: New Insights into Soot Formation Processes
Published on: May 26, 2014
Cr(III) and Cr(VI) on-line preconcentration and determination with high performance flow flame emission spectrometry
1Department of Inorganic and Analytical Chemistry, University Kossuth Lajos, PO Box 21, H-4010, Debrecen, Hungary.
Abstract:
Methods for the on-line chromatographic preconcentration of Cr(III) and Cr(VI) have been developed. Cr(VI) has been preconcentrated on an RP C18 silica based column with tetrabutylammonium-bromide (TBABr) as ion-pairing agent. Specially for Cr(III) a new and effective preconcentration technique based on the sorption of Cr(III)-ions in a C18 column in presence of KH-phthalate has been developed. The efficiency of sample introduction into the atomic emission spectrometer could be improved by hydraulic high pressure nebulization. For the detection of chromium the acetylene/N(2)O flame has been used as a powerful emission spectrometric source. Applying these steps the detection limit (3sigma) could be improved to 25 pg/mL for Cr(III) and to 20 pg/mL for Cr(VI). The method has been applied for the chromium speciation in natural water samples.
Related Concept Videos
Gas Chromatography: Types of Detectors-II
Flame Photometry: Lab
Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation
There are three main types of inductively coupled plasma atomic emission spectroscopy (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used.
Inductively Coupled Plasma–Mass Spectrometry (ICP–MS): Overview
Flame Photometry: Overview
Atomic Emission Spectroscopy: Interference

