Zobrazeno 1 - 10
of 168
pro vyhledávání: '"Chuni L. Chakrabarti"'
Publikováno v:
Analytica Chimica Acta. 636:6-12
The objective of this work was to study the effects of the following Ligands: Chelex-100, Dowex MAC-3 and Dowex 50WX-8 using Competing Ligand Exchange Method. This objective was achieved by investigating complex dissociation kinetics of trace metals:
Autor:
Jiujiang Zhao, Chuni L. Chakrabarti, Ismail I. Fasfous, Sheren Boca, John Murimboh, Parthasarathi Chakraborty, Tahir Yapici
Publikováno v:
Talanta. 77:1015-1020
Kinetic speciation of uranium in model solutions containing uranium and humic acid (HA) and in natural waters has been investigated by Competitive Ligand Exchange Method (CLEM). In alkaline freshwaters, most of uranium species were uranium–carbonat
Autor:
Chuni L. Chakrabarti, Rong Wang
Publikováno v:
Analytica Chimica Acta. 614:153-160
A technique has been developed to study chemical speciation of copper in freshwaters by competing ligand exchange (CLE) method using anodic stripping voltammetry (ASV) in the differential pulse (DP) mode with ethylenediaminetetraacetic acid (EDTA) as
Publikováno v:
Water, Air, and Soil Pollution. 193:131-146
The competing ligand exchange method was used to investigate the competitive binding of Ni(II) by Al(III) and Fe(III) in model aqueous solutions and freshwaters. Graphite furnace atomic absorption spectrometry and adsorptive cathodic stripping voltam
Autor:
Chuni L. Chakrabarti, Yamini Gopalapillai, Tahir Yapici, John Murimboh, Parthasarathi Chakraborty, Ismail I. Fasfous
Publikováno v:
Aquatic Geochemistry. 14:99-116
Free metal ion concentration is generally considered a useful indicator of a metal’s bioavailability and ecotoxicity to aquatic biota. This article reports the speciation of nickel in mining and municipal effluents from Sudbury (Ontario, Canada), a
Autor:
Chuni L. Chakrabarti, Ismail I. Fasfous, Parthasarathi Chakraborty, John Murimboh, Yamini Gopalapillai
Publikováno v:
Analytical and Bioanalytical Chemistry. 386:1803-1813
This study presents the results of kinetic speciation of nickel in undiluted mining and municipal effluents and effluents diluted with receiving freshwaters from the surrounding environment. The dilution ratios used for the dilution of the effluents
Publikováno v:
Analytica Chimica Acta. 571:260-269
The paper explores the lability of DOC complexes of Co, Ni, Cu, and Zn in the mining effluent, and investigates the effects of dilution of the effluent on the release of metals from the metal-DOC complexes. This study was done using competing ligand
Autor:
Jianfu Deng, John Murimboh, Jeffrey Guthrie, Chuni L. Chakrabarti, Catherine A. Murimboh, David R. S. Lean
Publikováno v:
Electroanalysis. 17:1977-1984
An improved theoretical approach to Anodic Stripping Voltammetry with a Thin Mercury Film Rotating Disk Electrode for elucidating the nature of the interactions of Pb(II), Cd(II) and Zn(II) with humic substances in model solutions of Laurentian fulvi
Publikováno v:
Analytica Chimica Acta. 498:175-187
This work continues an evaluation of a previously developed capillary electrophoresis (CE) method to determine the distribution of Fe, Zn, Cu, Mn, and Cd in airborne particulate matter (PM) after sequential extraction. A three-stage extraction proced
Publikováno v:
Electroanalysis. 15:903-906
Effect of competition of major cations, Ca2+, Mg2+, and trace metals, Cu2+, Ni2+ and Zn2+, on the stability of the Pb(II)-fulvic acid (FA) complexes in model systems at constant pH and ionic strength was investigated by square-wave anodic stripping v