Spectrophotometric determination of tellurium after adsorption of its morpholine-4-carbodithioate on microcrystalline naphthalene.
A rapid spectrophotometric method has been developed for microdetermination of Te(IV) after co-precipitation of its morpholine-4-carbodithioate complex on microcrystalline naphthalene and subsequent dissolution in chloroform. The molar absorptivity at 415 nm is 9.18 x 10(3) l.mole(-1).cm(-1). Beer's law is obeyed over the range 5-75 mug of Te(IV); 25.0 mug of Te(IV) in 10.0 ml of final solution gives a mean absorbance of 0.180 with a relative standard deviation of 0.55%. The method has been tested for determination of tellurium in some alloys and synthetic mixtures.
Sethi
C L
CL
Department of Chemistry, Indian Institute of Technology, New Delhi 110016, India.
Kumar
A
A
Satake
M
M
Puri
B K
BK