S. J. Rao, G. S. Reddy, J. Kumari
1986
Citations
0
Influential Citations
4
Citations
Journal
The Analyst
Abstract
A simple kinetic method has been developed based on the autoxidation of o-hydroxyphenylthiourea to disulphide, which is catalysed by trace amounts of cobalt. The reaction is monitored spectrophotometrically at pH 8.0 and cobalt is determined effectively in the range 5–50 ng ml–1. This method has been used to determine trace amounts of cobalt present in certain plant materials such as carrot roots and corn grains, in which it plays a vital role in different physiological activities.