Heavy metals, mercury and aluminium

Shih and Carr [277,278] showed that metal complexes of bis( -butyl-2-naphthyl-methyldithiocarbamate) are thermodynamically stable and chemically inert and that the nickel(II), iron(III), copper(II) and mercury (II) complexes of this dithiocarbamate can be separated by high performance liquid chromatography and detected with a variable wavelength detector. 

A typical chromatogram for the separation of the bis(n-butyl-2-naphthyl methyldithiocarbamate complexes of iron(III), nickel(II), copper(II), 

Source Reproduced by permission from Elsevier Science, UK [277] 

The absorptions of the different complexes at their wavelength were very different, cobalt and copper being the most sensitive. 

Edward Iratami [273] applied high performance Hquid chromatography to the determination in river water of mercury(II), copper(II), nickel(II), cobalt(II) and lead(II) as their dithizonates and their diethyl-dithiocaibamates. The metals were first complexed, then the complexes 

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