Determination of cobalt by pyrogallol chemiluminescence.
The chemiluminescence reaction involving pyrogallol in alkaline hydrogen peroxide solution is described. With reaction conditions selected for the determination of Co(II), the detection limit for Co(II) was at least two orders of magnitude below the detection limit of all other species tested. The results suggest that Ca, Mg, Mn, and Fe are the most likely interferents for environmental and biological samples. The log-log calibration graph for Co(II) is linear from a detection limit of 0.5 ng/ml up to 10 microg/ml.
Miller
R J
RJ
Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, USA.
Ingle
J D
JD