NOPR Collection:

Complexometric titration of thallium (III) using 3-mercapto-1, 2-propanediol as demasking agent

1994-03-01T00:00:00Z

Title: Complexometric titration of thallium (III) using 3-mercapto-1, 2-propanediol as demasking agent Authors: Shetty, Prakash; Khader, A M A; Shetty, A Nityananda; Gadag, R V Abstract: A simple and selective EDTA method involving masking and demasking technique is proposed for the determination of thallium (III) using 3-mercapto-1, 2-propaned as releasing agent. Reproducible and accurate results obtained in the range 4-7 5 mg of thallium with relative error of ± 0.3% and coefficient of variation not more than 0.46%. Page(s): 129-130

Electrochemical impedance study of nickel electro-deposits prepared in ultrasonically agitated bath

1994-03-01T00:00:00Z

Title: Electrochemical impedance study of nickel electro-deposits prepared in ultrasonically agitated bath Authors: Prasad, P B S N V; Ahila, S; Vasudevan, R; Seshadri, S K Abstract: Electrochemical impedance spectroscopic, (AC impedance) studies have been carried out on nickel electrodeposits obtained from still and ultrasonically agitated Watts electrolytic bath. The samsples have been tested in 3.5% sodium chloride solution. The beginning of corrosion process is well defined by the appearance of semicircle. The variation of current density (cd) during plating Influences the performance of the coating Ultrasonic agitation has improved the corrosion resistance properties of nickel deposits. Page(s): 127-128

Thermodynamic studies on binary liquid mixtures from ultrasonic data

1994-03-01T00:00:00Z

Title: Thermodynamic studies on binary liquid mixtures from ultrasonic data Authors: Kannappaan, A N; Vanaja, S; Palanivelu, N; Rajendran, V Abstract: The ultrasonic velocity, density and viscosity in the binary liquid mixtures of methanol with ethylene glycol, acetonitrile and nitrobenzene have been measured at 303K. From the measured values, the thermodynamic parameters such as adiabatic compressibility, free length free volume and their excess values are computed The observed results are discussed in terms of strength of interaction between the components of the mixture. Page(s): 124-126

Removal of alkyl lead using blast furnace granulated slag

1994-03-01T00:00:00Z

Title: Removal of alkyl lead using blast furnace granulated slag Authors: Loomba, Komal; Pandey, G S Abstract: The blast furnace granulated slag when treated with a solution of silver nitrate indicates a shiny deposition of metallic silver showing its capacity to cause electrochemical reduction. The major and minor components of the slag have been determined. The capacity of the slag to cause chemical reduction has been attributed to the presence of certain reactive metals in their elemental states. Alkyllead , in gasoline or aqueous system, when treated with the blast furnace granulated slag is found to be substantially or completely removed depending on the conditions of the treatment. The method has been found simple, economical and useful for the treatment of alkyllead-contaminated aqueous system. Page(s): 121-123