Extraction and spectrophotometric determination of cobalt(II) with isonitroso-5-methyl-2-hexanone.
A simple and selective method is proposed for the extraction of cobalt(II) for its spectrophotometric determination using (HIMH) as an extractant. Cobalt(II) forms a yellow coloured complex with HIMH which can be extracted into chloroform. The calibration curve is rectilinear in the concentration range 0.1-5.0 mug ml(-1) of cobalt(II). The extracted species shows an absorption maximum at 400 nm with molar absorptivity of 1.135x10(4) l mol(-1) cm(-1). The method has been applied for the determination of cobalt in synthetic mixtures, pharmaceutical, biological and high speed steel samples.
Jadhav
S B
SB
Department of Inorganic Chemistry, The Institute of Science, 15 Madam Cama Road, Mumbai 400 032, India.
Tandel
S P
SP
Malve
S P
SP