Gravimetric Determination and Separation of Alkaline-Earth Metals with N-p-Chlorophenylcinnamohydroxamic Acid

Analytical Laboratories, Pharmacy Department, Faculty of Technology and Engineering, M. S. University of Baroda., Kalabhavan, Baroda.-390 001

Manuscript received 16 February 1983, revised 10 October 1983, accepted 13 February 1984

A gravimetric method for determination and separation of beryllium, magnesium,
calcium and barium with N-p-chlorophenylcinnamohydroxamic acid is described. The
interference of several metal ions has been eliminated either by judicious choice of
masking agents or by adjustment of pH. The complexes show the structure
M(C₁₅H₁₁N0₂ Cl)₂