Adsorption studies of Cr(III) and Cr(VI) on lead sulphide, copper sulphide and zinc sulphide - determination Cr(III) in the presence of Cr(VI)

Journal Article · Mon Jan 01 00:00:00 EST 1990 · Analytical Letters; (United States)

OSTI ID:5731371

Sarwar, M; Masood, M K; Farooq, S ^[1]

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1. Pakistan Council of Scientific and Industrial Research, Lahore (Pakistan)

The adsorption studies of Cr(VI) in presence of Cr(III) on the sulphide of Lead, Zinc and Copper has been studied. It has been found that in case of lead sulphide 100% adsorption of Cr(VI) took place at pH 4.0 and of Cr(III) at pH 7.0. While in case of zinc sulphide and 100% adsorption of Cr(VI) took place at pH 4.5 and of Cr(III) at pH 6.5. In case of copper sulphide 100% adsorption of Cr(VI) took place at pH 5.0 and of Cr(III) at pH 7.0. This difference in adsorption at different pH values forms the basis for the determination of these ions. The method is accurate.

• OSTI ID: 5731371
• Journal Information: Analytical Letters; (United States), Vol. 22:13-14; ISSN 0003-2719
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
54 ENVIRONMENTAL SCIENCES
CHROMIUM
ADSORPTION
CHARGE STATES
CHROMIUM IONS
COPPER SULFIDES
EXPERIMENTAL DATA
LEAD SULFIDES
PH VALUE
QUANTITATIVE CHEMICAL ANALYSIS
SAMPLE PREPARATION
ZINC SULFIDES
CHALCOGENIDES
CHARGED PARTICLES
CHEMICAL ANALYSIS
COPPER COMPOUNDS
DATA
ELEMENTS
INFORMATION
INORGANIC PHOSPHORS
IONS
LEAD COMPOUNDS
METALS
NUMERICAL DATA
PHOSPHORS
SORPTION
SULFIDES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
ZINC COMPOUNDS
400105* - Separation Procedures
540320 - Environment
Aquatic- Chemicals Monitoring & Transport- (1990-)