ResourceSeparations
Determination of the Stabilizers Antimony, Bismuth, and Iodate in Electroless Nickel Baths
6 Apr 2011This application poster describes simple and fast, but sensitive and robust methods for the determination of the stabilizers antimony, bismuth, and iodate in electroless nickel baths. These stabilizers are being used as replacements for lead. Voltammetric analysis, with its capacity to quantify the electrochemical active species, is an excellent tool for controlling the concentrations of these additives. Antimony(III) and bismuth are determined in parallel by anodic stripping voltammetry (ASV) in 0.6 mol/L KCl electrolyte at pH < 2. The determination of iodate is carried out by polarography in 0.1 mol/L sodium citrate electrolyte at a pH value between 2.8 and 3.5.
Links
Tags
Baths and CirculatorsLaboratory baths and circulators are capable of refrigerating and heating to meet the demands of any temperature controlled application.VoltammetryVoltammetry is a sensitive analytical technique for elemental detection. In a voltammeter the current is measured in the system whilst the voltage is varied. Usually 3 metal electrodes are required including the reference, auxiliary and working electrodes. In polarography, a subclass of voltammetry, the working electrode used is a dropping mercury electrode (DME). The 2 main types of voltammetry are cyclic and linear sweep voltammetry.Environmental Monitoring and TestingEnvironmental monitoring and testing uses handheld portable analyzers, kits, spectrometers or chromatography systems for air, water, soil, food and other sample testing. Useful features of analyzers such as BOD and COD include portability, easy calibration, automation and sensitivity. Environmental test kits for pH, water, moisture, etc, should be accurate, sensitive, reliable, fast and easy to use.pH and Conductivity MetersIon and pH meters, used for electrochemical techniques and measurements, measure the concentration of specific ions using electrodes (probes) and a meter. Features of ph and ion meters to consider include temperature compensation, auto-calibration, adjustable resolution, measurable range and accuracy. Meters can be handheld, portable, benchtop and modular.Nickel