The method described is based on the reaction of silver or mercury (II) with potassium tetracyanonickelate (II). The liberated nickel is determined colorimentrically using dimethylglyoxime at 326 nm. As little as 1m mole of silver and mercury (II) can be determined with a relative standard deviation (rsd) of ± 3% . The effect of various ions on the reaction is also investigated.
M A AL-HAJJAJI ,SA AL TAMRAH ,I Z AL-ZAMIL ,
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